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Merge branch 'development' into iotssl-1941-aria-ciphersuites

Browse source 
* development: (504 commits)
  Fix minor code style issues
  Add the uodate to the soversion to the ChangeLog
  Fix the ChangeLog for clarity, english and credit
  Update version to 2.9.0
  ecp: Fix binary compatibility with group ID
  Changelog entry
  Change accepted ciphersuite versions when parsing server hello
  Remove preprocessor directives around platform_util.h include
  Fix style for mbedtls_mpi_zeroize()
  Improve mbedtls_platform_zeroize() docs
  mbedtls_zeroize -> mbedtls_platform_zeroize in docs
  Reword config.h docs for MBEDTLS_PLATFORM_ZEROIZE_ALT
  Organize CMakeLists targets in alphabetical order
  Organize output objs in alfabetical order in Makefile
  Regenerate errors after ecp.h updates
  Update ecp.h
  Change variable bytes_written to header_bytes in record decompression
  Update ecp.h
  Update ecp.h
  Update ecp.h
  ...
This commit is contained in:
Manuel Pégourié-Gonnard 2018-05-22 15:58:50 +02:00
parent 0960b80d53 c4bd8ec5ed
commit a3712beb9b
204 changed files with 7933 additions and 4006 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

2
CMakeLists.txt
View file

@ -31,7 +31,7 @@ find_package(Perl)
if(PERL_FOUND)
# If NULL Entropy is configured, display an appropriate warning
execute_process(COMMAND ${PERL_EXECUTABLE} ${CMAKE_SOURCE_DIR}/scripts/config.pl -f ${CMAKE_SOURCE_DIR}/include/mbedtls/config.h get MBEDTLS_TEST_NULL_ENTROPY
execute_process(COMMAND ${PERL_EXECUTABLE} ${CMAKE_CURRENT_SOURCE_DIR}/scripts/config.pl -f ${CMAKE_CURRENT_SOURCE_DIR}/include/mbedtls/config.h get MBEDTLS_TEST_NULL_ENTROPY
RESULT_VARIABLE result)
if(${result} EQUAL 0)
message(WARNING ${NULL_ENTROPY_WARNING})

63
CONTRIBUTING.md Normal file
View file

@ -0,0 +1,63 @@
Contributing
============
We gratefully accept bug reports and contributions from the community. There are some requirements we need to fulfill in order to be able to integrate contributions:
- As with any open source project, contributions will be reviewed by the project team and community and may need some modifications to be accepted.
- The contribution should not break API or ABI, unless there is a real justification for that. If there is an API change, the contribution, if accepted, will be merged only when there will be a major release.
Contributor License Agreement (CLA)
-----------------------------------
- All contributions, whether large or small, require a Contributor's License Agreement (CLA) to be accepted. This is because source code can possibly fall under copyright law and we need your consent to share in the ownership of the copyright.
- To accept the Contributor’s License Agreement (CLA), individual contributors can do this by creating an Mbed account and [accepting the online agreement here with a click through](https://developer.mbed.org/contributor_agreement/). Alternatively, for contributions from corporations, or those that do not wish to create an Mbed account, a slightly different agreement can be found [here](https://www.mbed.com/en/about-mbed/contributor-license-agreements/). This agreement should be signed and returned to Arm as described in the instructions given.
Coding Standards
----------------
- We would ask that contributions conform to [our coding standards](https://tls.mbed.org/kb/development/mbedtls-coding-standards), and that contributions are fully tested before submission, as mentioned in the [Tests](#tests) and [Continuous Integration](#continuous-integration-tests) sections.
- The code should be written in a clean and readable style.
- The code should be written in a portable generic way, that will benefit the whole community, and not only your own needs.
- The code should be secure, and will be reviewed from a security point of view as well.
Making a Contribution
---------------------
1. [Check for open issues](https://github.com/ARMmbed/mbedtls/issues) or [start a discussion](https://tls.mbed.org/discussions) around a feature idea or a bug.
1. Fork the [Mbed TLS repository on GitHub](https://github.com/ARMmbed/mbedtls) to start making your changes. As a general rule, you should use the ["development" branch](https://github.com/ARMmbed/mbedtls/tree/development) as a basis.
1. Write a test which shows that the bug was fixed or that the feature works as expected.
1. Send a pull request (PR) and work with us until it gets merged and published. Contributions may need some modifications, so a few rounds of review and fixing may be necessary. We will include your name in the ChangeLog :)
1. For quick merging, the contribution should be short, and concentrated on a single feature or topic. The larger the contribution is, the longer it would take to review it and merge it.
1. Mbed TLS is released under the Apache license, and as such, all the added files should include the Apache license header.
Backports
---------
Mbed TLS maintains some legacy branches, which are released as LTS versions. Mbed TLS should follow backwards compatibility rules, to fit with existing users. As such, backporting to these branches should be handled according to the following rules:
1. If the contribution is a new feature or enhancement, no backporting is needed.
1. Bug fixes should be backported to the legacy branches containing these bugs.
1. Changes in the API do not require backporting. If a bug fix introduced a new API, such as new error codes, the bug fix should be implemented differently in the legacy branch.
It would be highly appreciated if a contribution would be backported to a legacy branch in addition to the [development branch](https://github.com/ARMmbed/mbedtls/tree/development).
At the moment, the legacy branches are:
1. [mbedtls-1.3](https://github.com/ARMmbed/mbedtls/tree/mbedtls-1.3)
1. [mbedtls-2.1](https://github.com/ARMmbed/mbedtls/tree/mbedtls-2.1)
Tests
-----
As mentioned, tests that show the correctness of the feature or bug fix should be added to the pull request, if no such tests exist.
Mbed TLS includes an elaborate test suite in `tests/` that initially requires Perl to generate the tests files (e.g. `test_suite_mpi.c`). These files are generated from a `function file` (e.g. `suites/test_suite_mpi.function`) and a `data file` (e.g. `suites/test_suite_mpi.data`). The function file contains the test functions. The data file contains the test cases, specified as parameters that will be passed to the test function.
Sample applications, if needed, should be modified as well.
Continuous Integration Tests
----------------------------
Once a PR has been made, the Continuous Integration (CI) tests are triggered and run. You should follow the result of the CI tests, and fix failures.
It is advised to enable the [githooks scripts](https://github.com/ARMmbed/mbedtls/tree/development/tests/git-scripts) prior to pushing your changes, for catching some of the issues as early as possible.
Documentation
-------------
Mbed TLS should be well documented. If documentation is needed, speak out!
1. All interfaces should be documented through Doxygen. New APIs should introduce Doxygen documentation.
1. Complex parts in the code should include comments.
1. If needed, a Readme file is advised.
1. If a [Knowledge Base (KB)](https://tls.mbed.org/kb) article should be added, write this as a comment in the PR description.
1. A [ChangeLog](https://github.com/ARMmbed/mbedtls/blob/development/ChangeLog) entry should be added for this contribution.

200
ChangeLog
View file

@ -6,7 +6,143 @@ Features
* Add support for ARIA cipher (RFC 5794) and associated TLS ciphersuites
(RFC 6209). Disabled by default, see MBEDTLS_ARIA_C in config.h
= mbed TLS 2.7.x branch released 2018-xx-xx
API Changes
* Extend the platform module with a util component that contains
functionality shared by multiple Mbed TLS modules. At this stage
platform_util.h (and its associated platform_util.c) only contain
mbedtls_platform_zeroize(), which is a critical function from a security
point of view. mbedtls_platform_zeroize() needs to be regularly tested
against compilers to ensure that calls to it are not removed from the
output binary as part of redundant code elimination optimizations.
Therefore, mbedtls_platform_zeroize() is moved to the platform module to
facilitate testing and maintenance.
= mbed TLS 2.9.0 branch released 2018-04-30
Security
* Fix an issue in the X.509 module which could lead to a buffer overread
during certificate validation. Additionally, the issue could also lead to
unnecessary callback checks being made or to some validation checks to be
omitted. The overread could be triggered remotely, while the other issues
would require a non DER-compliant certificate to be correctly signed by a
trusted CA, or a trusted CA with a non DER-compliant certificate. Found by
luocm. Fixes #825.
* Fix the buffer length assertion in the ssl_parse_certificate_request()
function which led to an arbitrary overread of the message buffer. The
overreads could be caused by receiving a malformed message at the point
where an optional signature algorithms list is expected when the signature
algorithms section is too short. In builds with debug output, the overread
data is output with the debug data.
* Fix a client-side bug in the validation of the server's ciphersuite choice
which could potentially lead to the client accepting a ciphersuite it didn't
offer or a ciphersuite that cannot be used with the TLS or DTLS version
chosen by the server. This could lead to corruption of internal data
structures for some configurations.
Features
* Add an option, MBEDTLS_AES_FEWER_TABLES, to dynamically compute smaller AES
tables during runtime, thereby reducing the RAM/ROM footprint by ~6KiB.
Suggested and contributed by jkivilin in pull request #394.
* Add initial support for Curve448 (RFC 7748). Only mbedtls_ecp_mul() and
ECDH primitive functions (mbedtls_ecdh_gen_public(),
mbedtls_ecdh_compute_shared()) are supported for now. Contributed by
Nicholas Wilson in pull request #348.
API Changes
* Extend the public API with the function of mbedtls_net_poll() to allow user
applications to wait for a network context to become ready before reading
or writing.
* Add function mbedtls_ssl_check_pending() to the public API to allow
a check for whether more more data is pending to be processed in the
internal message buffers.
This function is necessary to determine when it is safe to idle on the
underlying transport in case event-driven IO is used.
Bugfix
* Fix a spurious uninitialized variable warning in cmac.c. Fix independently
contributed by Brian J Murray and David Brown.
* Add missing dependencies in test suites that led to build failures
in configurations that omit certain hashes or public-key algorithms.
Fixes #1040.
* Fix C89 incompatibility in benchmark.c. Contributed by Brendan Shanks.
#1353
* Add missing dependencies for MBEDTLS_HAVE_TIME_DATE and
MBEDTLS_VERSION_FEATURES in some test suites. Contributed by
Deomid Ryabkov. Fixes #1299, #1475.
* Fix the Makefile build process for building shared libraries on Mac OS X.
Fixed by mnacamura.
* Fix parsing of PKCS#8 encoded Elliptic Curve keys. Previously Mbed TLS was
unable to parse keys which had only the optional parameters field of the
ECPrivateKey structure. Found by Jethro Beekman, fixed in #1379.
* Return the plaintext data more quickly on unpadded CBC decryption, as
stated in the mbedtls_cipher_update() documentation. Contributed by
Andy Leiserson.
* Fix overriding and ignoring return values when parsing and writing to
a file in pk_sign program. Found by kevlut in #1142.
* Restrict usage of error code MBEDTLS_ERR_SSL_WANT_READ to situations
where data needs to be fetched from the underlying transport in order
to make progress. Previously, this error code was also occasionally
returned when unexpected messages were being discarded, ignoring that
further messages could potentially already be pending to be processed
in the internal buffers; these cases led to deadlocks when event-driven
I/O was used. Found and reported by Hubert Mis in #772.
* Fix buffer length assertions in the ssl_parse_certificate_request()
function which leads to a potential one byte overread of the message
buffer.
* Fix invalid buffer sizes passed to zlib during record compression and
decompression.
* Fix the soversion of libmbedcrypto to match the soversion of the
maintained 2.7 branch. The soversion was increased in Mbed TLS
version 2.7.1 to reflect breaking changes in that release, but the
increment was missed in 2.8.0 and later releases outside of the 2.7 branch.
Changes
* Remove some redundant code in bignum.c. Contributed by Alexey Skalozub.
* Support cmake builds where Mbed TLS is a subproject. Fix contributed
independently by Matthieu Volat and Arne Schwabe.
* Improve testing in configurations that omit certain hashes or
public-key algorithms. Includes contributions by Gert van Dijk.
* Improve negative testing of X.509 parsing.
* Do not define global mutexes around readdir() and gmtime() in
configurations where the feature is disabled. Found and fixed by Gergely
Budai.
* Harden the function mbedtls_ssl_config_free() against misuse, so that it
doesn't leak memory if the user doesn't use mbedtls_ssl_conf_psk() and
instead incorrectly manipulates the configuration structure directly.
Found and fix submitted by junyeonLEE in #1220.
* Provide an empty implementation of mbedtls_pkcs5_pbes2() when
MBEDTLS_ASN1_PARSE_C is not enabled. This allows the use of PBKDF2
without PBES2. Fixed by Marcos Del Sol Vives.
* Add the order of the base point as N in the mbedtls_ecp_group structure
for Curve25519 (other curves had it already). Contributed by Nicholas
Wilson #481
* Improve the documentation of mbedtls_net_accept(). Contributed by Ivan
Krylov.
* Improve the documentation of mbedtls_ssl_write(). Suggested by
Paul Sokolovsky in #1356.
* Add an option in the Makefile to support ar utilities where the operation
letter must not be prefixed by '-', such as LLVM. Found and fixed by
Alex Hixon.
* Allow configuring the shared library extension by setting the DLEXT
environment variable when using the project makefiles.
* Optimize unnecessary zeroing in mbedtls_mpi_copy. Based on a contribution
by Alexey Skalozub in #405.
* In the SSL module, when f_send, f_recv or f_recv_timeout report
transmitting more than the required length, return an error. Raised by
Sam O'Connor in #1245.
* Improve robustness of mbedtls_ssl_derive_keys against the use of
HMAC functions with non-HMAC ciphersuites. Independently contributed
by Jiayuan Chen in #1377. Fixes #1437.
* Improve security of RSA key generation by including criteria from
FIPS 186-4. Contributed by Jethro Beekman. #1380
* Declare functions in header files even when an alternative implementation
of the corresponding module is activated by defining the corresponding
MBEDTLS_XXX_ALT macro. This means that alternative implementations do
not need to copy the declarations, and ensures that they will have the
same API.
* Add platform setup and teardown calls in test suites.
= mbed TLS 2.8.0 branch released 2018-03-16
Default behavior changes
* The truncated HMAC extension now conforms to RFC 6066. This means
@ -23,6 +159,14 @@ Security
implementation allowed an offline 2^80 brute force attack on the
HMAC key of a single, uninterrupted connection (with no
resumption of the session).
* Verify results of RSA private key operations to defend
against Bellcore glitch attack.
* Fix a buffer overread in ssl_parse_server_key_exchange() that could cause
a crash on invalid input.
* Fix a buffer overread in ssl_parse_server_psk_hint() that could cause a
crash on invalid input.
* Fix CRL parsing to reject CRLs containing unsupported critical
extensions. Found by Falko Strenzke and Evangelos Karatsiolis.
Features
* Extend PKCS#8 interface by introducing support for the entire SHA
@ -32,6 +176,10 @@ Features
OpenVPN Inc. Fixes #1339
* Add support for public keys encoded in PKCS#1 format. #1122
New deprecations
* Deprecate support for record compression (configuration option
MBEDTLS_ZLIB_SUPPORT).
Bugfix
* Fix the name of a DHE parameter that was accidentally changed in 2.7.0.
Fixes #1358.
@ -41,6 +189,28 @@ Bugfix
In the context of SSL, this resulted in handshake failure. Reported by
daniel in the Mbed TLS forum. #1351
* Fix Windows x64 builds with the included mbedTLS.sln file. #1347
* Fix setting version TLSv1 as minimal version, even if TLS 1
is not enabled. Set MBEDTLS_SSL_MIN_MAJOR_VERSION
and MBEDTLS_SSL_MIN_MINOR_VERSION instead of
MBEDTLS_SSL_MAJOR_VERSION_3 and MBEDTLS_SSL_MINOR_VERSION_1. #664
* Fix compilation error on Mingw32 when _TRUNCATE is defined. Use _TRUNCATE
only if __MINGW32__ not defined. Fix suggested by Thomas Glanzmann and
Nick Wilson on issue #355
* In test_suite_pk, pass valid parameters when testing for hash length
overflow. #1179
* Fix memory allocation corner cases in memory_buffer_alloc.c module. Found
by Guido Vranken. #639
* Log correct number of ciphersuites used in Client Hello message. #918
* Fix X509 CRT parsing that would potentially accept an invalid tag when
parsing the subject alternative names.
* Fix a possible arithmetic overflow in ssl_parse_server_key_exchange()
that could cause a key exchange to fail on valid data.
* Fix a possible arithmetic overflow in ssl_parse_server_psk_hint() that
could cause a key exchange to fail on valid data.
* Don't define mbedtls_aes_decrypt and mbedtls_aes_encrypt under
MBEDTLS_DEPRECATED_REMOVED. #1388
* Fix a 1-byte heap buffer overflow (read-only) during private key parsing.
Found through fuzz testing.
Changes
* Fix tag lengths and value ranges in the documentation of CCM encryption.
@ -49,6 +219,9 @@ Changes
* Remove support for the library reference configuration for picocoin.
* MD functions deprecated in 2.7.0 are no longer inline, to provide
a migration path for those depending on the library's ABI.
* Clarify the documentation of mbedtls_ssl_setup.
* Use (void) when defining functions with no parameters. Contributed by
Joris Aerts. #678
= mbed TLS 2.7.0 branch released 2018-02-03
@ -165,7 +338,7 @@ Bugfix
* Fix ssl_parse_record_header() to silently discard invalid DTLS records
as recommended in RFC 6347 Section 4.1.2.7.
* Fix memory leak in mbedtls_ssl_set_hostname() when called multiple times.
Found by projectgus and jethrogb, #836.
Found by projectgus and Jethro Beekman, #836.
* Fix usage help in ssl_server2 example. Found and fixed by Bei Lin.
* Parse signature algorithm extension when renegotiating. Previously,
renegotiated handshakes would only accept signatures using SHA-1
@ -359,8 +532,7 @@ Bugfix
Previous behaviour was to keep processing data even after the alert has
been sent.
* Accept empty trusted CA chain in authentication mode
MBEDTLS_SSL_VERIFY_OPTIONAL.
Found by jethrogb. #864
MBEDTLS_SSL_VERIFY_OPTIONAL. Found by Jethro Beekman. #864
* Fix implementation of mbedtls_ssl_parse_certificate() to not annihilate
fatal errors in authentication mode MBEDTLS_SSL_VERIFY_OPTIONAL and to
reflect bad EC curves within verification result.
@ -1562,7 +1734,7 @@ Features
issuer_key_identifier, etc)
* Optional blinding for RSA, DHM and EC
* Support for multiple active certificate / key pairs in SSL servers for
the same host (Not to be confused with SNI!)
the same host (Not to be confused with SNI!)
Changes
* Ability to enable / disable SSL v3 / TLS 1.0 / TLS 1.1 / TLS 1.2
@ -1793,7 +1965,7 @@ Changes
PKCS#8 private key formats
* Added mechanism to provide alternative implementations for all
symmetric cipher and hash algorithms (e.g. POLARSSL_AES_ALT in
config.h)
config.h)
* PKCS#5 module added. Moved PBKDF2 functionality inside and deprecated
old PBKDF2 module
@ -1805,7 +1977,7 @@ Bugfix
* x509parse_crt() now better handles PEM error situations
* ssl_parse_certificate() now calls x509parse_crt_der() directly
instead of the x509parse_crt() wrapper that can also parse PEM
certificates
certificates
* x509parse_crtpath() is now reentrant and uses more portable stat()
* Fixed bignum.c and bn_mul.h to support Thumb2 and LLVM compiler
* Fixed values for 2-key Triple DES in cipher layer
@ -1963,7 +2135,7 @@ Bugfix
* mpi_exp_mod() now correctly handles negative base numbers (Closes ticket
#52)
* Handle encryption with private key and decryption with public key as per
RFC 2313
RFC 2313
* Handle empty certificate subject names
* Prevent reading over buffer boundaries on X509 certificate parsing
* mpi_add_abs() now correctly handles adding short numbers to long numbers
@ -1994,7 +2166,7 @@ Bugfix
* x509parse_crt() now better handles PEM error situations
* ssl_parse_certificate() now calls x509parse_crt_der() directly
instead of the x509parse_crt() wrapper that can also parse PEM
certificates
certificates
* Fixed values for 2-key Triple DES in cipher layer
* ssl_write_certificate_request() can handle empty ca_chain
@ -2075,16 +2247,16 @@ Bugfix
Features
* Added ssl_session_reset() to allow better multi-connection pools of
SSL contexts without needing to set all non-connection-specific
data and pointers again. Adapted ssl_server to use this functionality.
data and pointers again. Adapted ssl_server to use this functionality.
* Added ssl_set_max_version() to allow clients to offer a lower maximum
supported version to a server to help buggy server implementations.
(Closes ticket #36)
(Closes ticket #36)
* Added cipher_get_cipher_mode() and cipher_get_cipher_operation()
introspection functions (Closes ticket #40)
* Added CTR_DRBG based on AES-256-CTR (NIST SP 800-90) random generator
* Added a generic entropy accumulator that provides support for adding
custom entropy sources and added some generic and platform dependent
entropy sources
entropy sources
Changes
* Documentation for AES and Camellia in modes CTR and CFB128 clarified.
@ -2217,7 +2389,7 @@ Bugfixes
* Corrected parsing of UTCTime dates before 1990 and
after 1950
* Support more exotic OID's when parsing certificates
(found by Mads Kiilerich)
(found by Mads Kiilerich)
* Support more exotic name representations when parsing
certificates (found by Mads Kiilerich)
* Replaced the expired test certificates
@ -2247,7 +2419,7 @@ Note: Most of these features have been donated by Fox-IT
status, objects and configuration
+ Added verification callback on certificate chain
verification to allow external blacklisting
+ Additional example programs to show usage
+ Additional example programs to show usage
* Added support for PKCS#11 through the use of the
libpkcs11-helper library

6
Makefile
View file

@ -24,12 +24,12 @@ ifndef WINDOWS
install: no_test
mkdir -p $(DESTDIR)/include/mbedtls
cp -r include/mbedtls $(DESTDIR)/include
mkdir -p $(DESTDIR)/lib
cp -RP library/libmbedtls.* $(DESTDIR)/lib
cp -RP library/libmbedx509.* $(DESTDIR)/lib
cp -RP library/libmbedcrypto.* $(DESTDIR)/lib
mkdir -p $(DESTDIR)/bin
for p in programs/*/* ; do \
if [ -x $$p ] && [ ! -d $$p ] ; \
@ -44,7 +44,7 @@ uninstall:
rm -f $(DESTDIR)/lib/libmbedtls.*
rm -f $(DESTDIR)/lib/libmbedx509.*
rm -f $(DESTDIR)/lib/libmbedcrypto.*
for p in programs/*/* ; do \
if [ -x $$p ] && [ ! -d $$p ] ; \
then \

63
README.md
View file

@ -76,7 +76,9 @@ You'll still be able to run a much smaller set of tests with:
In order to build for a Windows platform, you should use `WINDOWS_BUILD=1` if the target is Windows but the build environment is Unix-like (for instance when cross-compiling, or compiling from an MSYS shell), and `WINDOWS=1` if the build environment is a Windows shell (for instance using mingw32-make) (in that case some targets will not be available).
Setting the variable `SHARED` in your environment will build shared libraries in addition to the static libraries. Setting `DEBUG` gives you a debug build. You can override `CFLAGS` and `LDFLAGS` by setting them in your environment or on the make command line; if you do so, essential parts such as `-I` will still be preserved. Warning options may be overridden separately using `WARNING_CFLAGS`.
Setting the variable `SHARED` in your environment will build shared libraries in addition to the static libraries. Setting `DEBUG` gives you a debug build. You can override `CFLAGS` and `LDFLAGS` by setting them in your environment or on the make command line; compiler warning options may be overridden separately using `WARNING_CFLAGS`. Some directory-specific options (for example, `-I` directives) are still preserved.
Please note that setting `CFLAGS` overrides its default value of `-O2` and setting `WARNING_CFLAGS` overrides its default value (starting with `-Wall -W`), so it you just want to add some warning options to the default ones, you can do so by setting `CFLAGS=-O2 -Werror` for example. Setting `WARNING_CFLAGS` is useful when you want to get rid of its default content (for example because your compiler doesn't accept `-Wall` as an option). Directory-specific options cannot be overriden from the command line.
Depending on your platform, you might run into some issues. Please check the Makefiles in `library/`, `programs/` and `tests/` for options to manually add or remove for specific platforms. You can also check [the Mbed TLS Knowledge Base](https://tls.mbed.org/kb) for articles on your platform or issue.
@ -84,9 +86,10 @@ In case you find that you need to do something else as well, please let us know
### CMake
In order to build the source using CMake, just enter at the command line:
In order to build the source using CMake in a separate directory (recommended), just enter at the command line:
cmake .
mkdir /path/to/build_dir && cd /path/to/build_dir
cmake /path/to/mbedtls_source
make
In order to run the tests, enter:
@ -95,7 +98,7 @@ In order to run the tests, enter:
The test suites need Perl to be built. If you don't have Perl installed, you'll want to disable the test suites with:
cmake -DENABLE_TESTING=Off .
cmake -DENABLE_TESTING=Off /path/to/mbedtls_source
If you disabled the test suites, but kept the programs enabled, you can still run a much smaller set of tests with:
@ -103,31 +106,59 @@ If you disabled the test suites, but kept the programs enabled, you can still ru
To configure CMake for building shared libraries, use:
cmake -DUSE_SHARED_MBEDTLS_LIBRARY=On .
cmake -DUSE_SHARED_MBEDTLS_LIBRARY=On /path/to/mbedtls_source
There are many different build modes available within the CMake buildsystem. Most of them are available for gcc and clang, though some are compiler-specific:
- Release. This generates the default code without any unnecessary information in the binary files.
- Debug. This generates debug information and disables optimization of the code.
- Coverage. This generates code coverage information in addition to debug information.
- ASan. This instruments the code with AddressSanitizer to check for memory errors. (This includes LeakSanitizer, with recent version of gcc and clang.) (With recent version of clang, this mode also instruments the code with UndefinedSanitizer to check for undefined behaviour.)
- ASanDbg. Same as ASan but slower, with debug information and better stack traces.
- MemSan. This instruments the code with MemorySanitizer to check for uninitialised memory reads. Experimental, needs recent clang on Linux/x86\_64.
- MemSanDbg. Same as MemSan but slower, with debug information, better stack traces and origin tracking.
- Check. This activates the compiler warnings that depend on optimization and treats all warnings as errors.
- `Release`. This generates the default code without any unnecessary information in the binary files.
- `Debug`. This generates debug information and disables optimization of the code.
- `Coverage`. This generates code coverage information in addition to debug information.
- `ASan`. This instruments the code with AddressSanitizer to check for memory errors. (This includes LeakSanitizer, with recent version of gcc and clang.) (With recent version of clang, this mode also instruments the code with UndefinedSanitizer to check for undefined behaviour.)
- `ASanDbg`. Same as ASan but slower, with debug information and better stack traces.
- `MemSan`. This instruments the code with MemorySanitizer to check for uninitialised memory reads. Experimental, needs recent clang on Linux/x86\_64.
- `MemSanDbg`. Same as MemSan but slower, with debug information, better stack traces and origin tracking.
- `Check`. This activates the compiler warnings that depend on optimization and treats all warnings as errors.
Switching build modes in CMake is simple. For debug mode, enter at the command line:
cmake -D CMAKE_BUILD_TYPE=Debug .
cmake -D CMAKE_BUILD_TYPE=Debug /path/to/mbedtls_source
To list other available CMake options, use:
cmake -LH
Note that, with CMake, if you want to change the compiler or its options after you already ran CMake, you need to clear its cache first, e.g. (using GNU find):
Note that, with CMake, you can't adjust the compiler or its flags after the
initial invocation of cmake. This means that `CC=your_cc make` and `make
CC=your_cc` will *not* work (similarly with `CFLAGS` and other variables).
These variables need to be adjusted when invoking cmake for the first time,
for example:
CC=your_cc cmake /path/to/mbedtls_source
If you already invoked cmake and want to change those settings, you need to
remove the build directory and create it again.
Note that it is possible to build in-place; this will however overwrite the
provided Makefiles (see `scripts/tmp_ignore_makefiles.sh` if you want to
prevent `git status` from showing them as modified). In order to do so, from
the Mbed TLS source directory, use:
cmake .
make
If you want to change `CC` or `CFLAGS` afterwards, you will need to remove the
CMake cache. This can be done with the following command using GNU find:
find . -iname '*cmake*' -not -name CMakeLists.txt -exec rm -rf {} +
CC=gcc CFLAGS='-fstack-protector-strong -Wa,--noexecstack' cmake .
You can now make the desired change:
CC=your_cc cmake .
make
Regarding variables, also note that if you set CFLAGS when invoking cmake,
your value of CFLAGS doesn't override the content provided by cmake (depending
on the build mode as seen above), it's merely prepended to it.
### Microsoft Visual Studio

2
doxygen/input/doc_mainpage.h
View file

@ -24,7 +24,7 @@
*/
/**
* @mainpage mbed TLS v2.7.0 source code documentation
* @mainpage mbed TLS v2.9.0 source code documentation
*
* This documentation describes the internal structure of mbed TLS. It was
* automatically generated from specially formatted comment blocks in

4
doxygen/mbedtls.doxyfile
View file

@ -28,7 +28,7 @@ DOXYFILE_ENCODING = UTF-8
# identify the project. Note that if you do not use Doxywizard you need
# to put quotes around the project name if it contains spaces.
PROJECT_NAME = "mbed TLS v2.7.0"
PROJECT_NAME = "mbed TLS v2.9.0"
# The PROJECT_NUMBER tag can be used to enter a project or revision number.
# This could be handy for archiving the generated documentation or
@ -702,7 +702,7 @@ EXCLUDE = ../configs ../yotta/module
# directories that are symbolic links (a Unix file system feature) are excluded
# from the input.
EXCLUDE_SYMLINKS = NO
EXCLUDE_SYMLINKS = YES
# If the value of the INPUT tag contains directories, you can use the
# EXCLUDE_PATTERNS tag to specify one or more wildcard patterns to exclude

44
include/mbedtls/aes.h
View file

@ -1,7 +1,9 @@
/**
* \file aes.h
*
* \brief The Advanced Encryption Standard (AES) specifies a FIPS-approved
* \brief This file contains AES definitions and functions.
*
* The Advanced Encryption Standard (AES) specifies a FIPS-approved
* cryptographic algorithm that can be used to protect electronic
* data.
*
@ -12,6 +14,7 @@
* techniques -- Encryption algorithms -- Part 2: Asymmetric
* ciphers</em>.
*/
/* Copyright (C) 2006-2018, Arm Limited (or its affiliates), All Rights Reserved.
* SPDX-License-Identifier: Apache-2.0
*
@ -59,14 +62,14 @@
#define inline __inline
#endif
#if !defined(MBEDTLS_AES_ALT)
// Regular implementation
//
#ifdef __cplusplus
extern "C" {
#endif
#if !defined(MBEDTLS_AES_ALT)
// Regular implementation
//
/**
* \brief The AES context-type definition.
*/
@ -85,6 +88,10 @@ typedef struct
}
mbedtls_aes_context;
#else /* MBEDTLS_AES_ALT */
#include "aes_alt.h"
#endif /* MBEDTLS_AES_ALT */
/**
* \brief This function initializes the specified AES context.
*
@ -112,8 +119,8 @@ void mbedtls_aes_free( mbedtls_aes_context *ctx );
* <li>192 bits</li>
* <li>256 bits</li></ul>
*
* \return \c 0 on success or #MBEDTLS_ERR_AES_INVALID_KEY_LENGTH
* on failure.
* \return \c 0 on success.
* \return #MBEDTLS_ERR_AES_INVALID_KEY_LENGTH on failure.
*/
int mbedtls_aes_setkey_enc( mbedtls_aes_context *ctx, const unsigned char *key,
unsigned int keybits );
@ -128,7 +135,8 @@ int mbedtls_aes_setkey_enc( mbedtls_aes_context *ctx, const unsigned char *key,
* <li>192 bits</li>
* <li>256 bits</li></ul>
*
* \return \c 0 on success, or #MBEDTLS_ERR_AES_INVALID_KEY_LENGTH on failure.
* \return \c 0 on success.
* \return #MBEDTLS_ERR_AES_INVALID_KEY_LENGTH on failure.
*/
int mbedtls_aes_setkey_dec( mbedtls_aes_context *ctx, const unsigned char *key,
unsigned int keybits );
@ -192,7 +200,8 @@ int mbedtls_aes_crypt_ecb( mbedtls_aes_context *ctx,
* \param input The buffer holding the input data.
* \param output The buffer holding the output data.
*
* \return \c 0 on success, or #MBEDTLS_ERR_AES_INVALID_INPUT_LENGTH
* \return \c 0 on success.
* \return #MBEDTLS_ERR_AES_INVALID_INPUT_LENGTH
* on failure.
*/
int mbedtls_aes_crypt_cbc( mbedtls_aes_context *ctx,
@ -330,7 +339,7 @@ int mbedtls_aes_crypt_cfb8( mbedtls_aes_context *ctx,
* \param input The buffer holding the input data.
* \param output The buffer holding the output data.
*
* \return \c 0 on success.
* \return \c 0 on success.
*/
int mbedtls_aes_crypt_ctr( mbedtls_aes_context *ctx,
size_t length,
@ -408,22 +417,11 @@ MBEDTLS_DEPRECATED void mbedtls_aes_decrypt( mbedtls_aes_context *ctx,
#undef MBEDTLS_DEPRECATED
#endif /* !MBEDTLS_DEPRECATED_REMOVED */
#ifdef __cplusplus
}
#endif
#else /* MBEDTLS_AES_ALT */
#include "aes_alt.h"
#endif /* MBEDTLS_AES_ALT */
#ifdef __cplusplus
extern "C" {
#endif
/**
* \brief Checkup routine.
*
* \return \c 0 on success, or \c 1 on failure.
* \return \c 0 on success.
* \return \c 1 on failure.
*/
int mbedtls_aes_self_test( int verbose );

24
include/mbedtls/arc4.h
View file

@ -38,14 +38,14 @@
#define MBEDTLS_ERR_ARC4_HW_ACCEL_FAILED -0x0019 /**< ARC4 hardware accelerator failed. */
#if !defined(MBEDTLS_ARC4_ALT)
// Regular implementation
//
#ifdef __cplusplus
extern "C" {
#endif
#if !defined(MBEDTLS_ARC4_ALT)
// Regular implementation
//
/**
* \brief ARC4 context structure
*
@ -61,6 +61,10 @@ typedef struct
}
mbedtls_arc4_context;
#else /* MBEDTLS_ARC4_ALT */
#include "arc4_alt.h"
#endif /* MBEDTLS_ARC4_ALT */
/**
* \brief Initialize ARC4 context
*
@ -118,18 +122,6 @@ void mbedtls_arc4_setup( mbedtls_arc4_context *ctx, const unsigned char *key,
int mbedtls_arc4_crypt( mbedtls_arc4_context *ctx, size_t length, const unsigned char *input,
unsigned char *output );
#ifdef __cplusplus
}
#endif
#else /* MBEDTLS_ARC4_ALT */
#include "arc4_alt.h"
#endif /* MBEDTLS_ARC4_ALT */
#ifdef __cplusplus
extern "C" {
#endif
/**
* \brief Checkup routine
*

15
include/mbedtls/asn1.h
View file

@ -88,6 +88,21 @@
#define MBEDTLS_ASN1_PRIMITIVE 0x00
#define MBEDTLS_ASN1_CONSTRUCTED 0x20
#define MBEDTLS_ASN1_CONTEXT_SPECIFIC 0x80
/*
* Bit masks for each of the components of an ASN.1 tag as specified in
* ITU X.690 (08/2015), section 8.1 "General rules for encoding",
* paragraph 8.1.2.2:
*
* Bit 8 7 6 5 1
* +-------+-----+------------+
* | Class | P/C | Tag number |
* +-------+-----+------------+
*/
#define MBEDTLS_ASN1_TAG_CLASS_MASK 0xC0
#define MBEDTLS_ASN1_TAG_PC_MASK 0x20
#define MBEDTLS_ASN1_TAG_VALUE_MASK 0x1F
/* \} name */
/* \} addtogroup asn1_module */

10
include/mbedtls/bignum.h
View file

@ -204,6 +204,8 @@ void mbedtls_mpi_free( mbedtls_mpi *X );
/**
* \brief Enlarge to the specified number of limbs
*
* This function does nothing if the MPI is already large enough.
*
* \param X MPI to grow
* \param nblimbs The target number of limbs
*
@ -215,19 +217,23 @@ int mbedtls_mpi_grow( mbedtls_mpi *X, size_t nblimbs );
/**
* \brief Resize down, keeping at least the specified number of limbs
*
* If \c X is smaller than \c nblimbs, it is resized up
* instead.
*
* \param X MPI to shrink
* \param nblimbs The minimum number of limbs to keep
*
* \return 0 if successful,
* MBEDTLS_ERR_MPI_ALLOC_FAILED if memory allocation failed
* (this can only happen when resizing up).
*/
int mbedtls_mpi_shrink( mbedtls_mpi *X, size_t nblimbs );
/**
* \brief Copy the contents of Y into X
*
* \param X Destination MPI
* \param Y Source MPI
* \param X Destination MPI. It is enlarged if necessary.
* \param Y Source MPI.
*
* \return 0 if successful,
* MBEDTLS_ERR_MPI_ALLOC_FAILED if memory allocation failed

16
include/mbedtls/blowfish.h
View file

@ -44,14 +44,14 @@
#define MBEDTLS_ERR_BLOWFISH_HW_ACCEL_FAILED -0x0017 /**< Blowfish hardware accelerator failed. */
#define MBEDTLS_ERR_BLOWFISH_INVALID_INPUT_LENGTH -0x0018 /**< Invalid data input length. */
#if !defined(MBEDTLS_BLOWFISH_ALT)
// Regular implementation
//
#ifdef __cplusplus
extern "C" {
#endif
#if !defined(MBEDTLS_BLOWFISH_ALT)
// Regular implementation
//
/**
* \brief Blowfish context structure
*/
@ -62,6 +62,10 @@ typedef struct
}
mbedtls_blowfish_context;
#else /* MBEDTLS_BLOWFISH_ALT */
#include "blowfish_alt.h"
#endif /* MBEDTLS_BLOWFISH_ALT */
/**
* \brief Initialize Blowfish context
*
@ -215,8 +219,4 @@ int mbedtls_blowfish_crypt_ctr( mbedtls_blowfish_context *ctx,
}
#endif
#else /* MBEDTLS_BLOWFISH_ALT */
#include "blowfish_alt.h"
#endif /* MBEDTLS_BLOWFISH_ALT */
#endif /* blowfish.h */

24
include/mbedtls/camellia.h
View file

@ -40,14 +40,14 @@
#define MBEDTLS_ERR_CAMELLIA_INVALID_INPUT_LENGTH -0x0026 /**< Invalid data input length. */
#define MBEDTLS_ERR_CAMELLIA_HW_ACCEL_FAILED -0x0027 /**< Camellia hardware accelerator failed. */
#if !defined(MBEDTLS_CAMELLIA_ALT)
// Regular implementation
//
#ifdef __cplusplus
extern "C" {
#endif
#if !defined(MBEDTLS_CAMELLIA_ALT)
// Regular implementation
//
/**
* \brief CAMELLIA context structure
*/
@ -58,6 +58,10 @@ typedef struct
}
mbedtls_camellia_context;
#else /* MBEDTLS_CAMELLIA_ALT */
#include "camellia_alt.h"
#endif /* MBEDTLS_CAMELLIA_ALT */
/**
* \brief Initialize CAMELLIA context
*
@ -228,18 +232,6 @@ int mbedtls_camellia_crypt_ctr( mbedtls_camellia_context *ctx,
unsigned char *output );
#endif /* MBEDTLS_CIPHER_MODE_CTR */
#ifdef __cplusplus
}
#endif
#else /* MBEDTLS_CAMELLIA_ALT */
#include "camellia_alt.h"
#endif /* MBEDTLS_CAMELLIA_ALT */
#ifdef __cplusplus
extern "C" {
#endif
/**
* \brief Checkup routine
*

54
include/mbedtls/ccm.h
View file

@ -1,8 +1,11 @@
/**
* \file ccm.h
*
* \brief CCM combines Counter mode encryption with CBC-MAC authentication
* for 128-bit block ciphers.
* \brief This file provides an API for the CCM authenticated encryption
* mode for block ciphers.
*
* CCM combines Counter mode encryption with CBC-MAC authentication
* for 128-bit block ciphers.
*
* Input to CCM includes the following elements:
* <ul><li>Payload - data that is both authenticated and encrypted.</li>
@ -40,14 +43,15 @@
#define MBEDTLS_ERR_CCM_AUTH_FAILED -0x000F /**< Authenticated decryption failed. */
#define MBEDTLS_ERR_CCM_HW_ACCEL_FAILED -0x0011 /**< CCM hardware accelerator failed. */
#if !defined(MBEDTLS_CCM_ALT)
// Regular implementation
//
#ifdef __cplusplus
extern "C" {
#endif
#if !defined(MBEDTLS_CCM_ALT)
// Regular implementation
//
/**
* \brief The CCM context-type definition. The CCM context is passed
* to the APIs called.
@ -57,6 +61,10 @@ typedef struct {
}
mbedtls_ccm_context;
#else /* MBEDTLS_CCM_ALT */
#include "ccm_alt.h"
#endif /* MBEDTLS_CCM_ALT */
/**
* \brief This function initializes the specified CCM context,
* to make references valid, and prepare the context
@ -75,7 +83,8 @@ void mbedtls_ccm_init( mbedtls_ccm_context *ctx );
* \param key The encryption key.
* \param keybits The key size in bits. This must be acceptable by the cipher.
*
* \return \c 0 on success, or a cipher-specific error code.
* \return \c 0 on success.
* \return A CCM or cipher-specific error code on failure.
*/
int mbedtls_ccm_setkey( mbedtls_ccm_context *ctx,
mbedtls_cipher_id_t cipher,
@ -93,6 +102,13 @@ void mbedtls_ccm_free( mbedtls_ccm_context *ctx );
/**
* \brief This function encrypts a buffer using CCM.
*
*
* \note The tag is written to a separate buffer. To concatenate
* the \p tag with the \p output, as done in <em>RFC-3610:
* Counter with CBC-MAC (CCM)</em>, use
* \p tag = \p output + \p length, and make sure that the
* output buffer is at least \p length + \p tag_len wide.
*
* \param ctx The CCM context to use for encryption.
* \param length The length of the input data in Bytes.
* \param iv Initialization vector (nonce).
@ -107,13 +123,8 @@ void mbedtls_ccm_free( mbedtls_ccm_context *ctx );
* \param tag_len The length of the tag to generate in Bytes:
* 4, 6, 8, 10, 12, 14 or 16.
*
* \note The tag is written to a separate buffer. To concatenate
* the \p tag with the \p output, as done in <em>RFC-3610:
* Counter with CBC-MAC (CCM)</em>, use
* \p tag = \p output + \p length, and make sure that the
* output buffer is at least \p length + \p tag_len wide.
*
* \return \c 0 on success.
* \return A CCM or cipher-specific error code on failure.
*/
int mbedtls_ccm_encrypt_and_tag( mbedtls_ccm_context *ctx, size_t length,
const unsigned char *iv, size_t iv_len,
@ -139,8 +150,9 @@ int mbedtls_ccm_encrypt_and_tag( mbedtls_ccm_context *ctx, size_t length,
* \param tag_len The length of the tag in Bytes.
* 4, 6, 8, 10, 12, 14 or 16.
*
* \return 0 if successful and authenticated, or
* #MBEDTLS_ERR_CCM_AUTH_FAILED if the tag does not match.
* \return \c 0 on success. This indicates that the message is authentic.
* \return #MBEDTLS_ERR_CCM_AUTH_FAILED if the tag does not match.
* \return A cipher-specific error code on calculation failure.
*/
int mbedtls_ccm_auth_decrypt( mbedtls_ccm_context *ctx, size_t length,
const unsigned char *iv, size_t iv_len,
@ -148,23 +160,13 @@ int mbedtls_ccm_auth_decrypt( mbedtls_ccm_context *ctx, size_t length,
const unsigned char *input, unsigned char *output,
const unsigned char *tag, size_t tag_len );
#ifdef __cplusplus
}
#endif
#else /* MBEDTLS_CCM_ALT */
#include "ccm_alt.h"
#endif /* MBEDTLS_CCM_ALT */
#ifdef __cplusplus
extern "C" {
#endif
#if defined(MBEDTLS_SELF_TEST) && defined(MBEDTLS_AES_C)
/**
* \brief The CCM checkup routine.
*
* \return \c 0 on success, or \c 1 on failure.
* \return \c 0 on success.
* \return \c 1 on failure.
*/
int mbedtls_ccm_self_test( int verbose );
#endif /* MBEDTLS_SELF_TEST && MBEDTLS_AES_C */

357
include/mbedtls/cipher.h
View file

@ -1,7 +1,9 @@
/**
* \file cipher.h
*
* \brief The generic cipher wrapper.
* \brief This file contains an abstraction interface for use with the cipher
* primitives provided by the library. It provides a common interface to all of
* the available cipher operations.
*
* \author Adriaan de Jong <dejong@fox-it.com>
*/
@ -69,112 +71,112 @@ extern "C" {
#endif
/**
* \brief An enumeration of supported ciphers.
* \brief Supported cipher types.
*
* \warning ARC4 and DES are considered weak ciphers and their use
* constitutes a security risk. We recommend considering stronger
* \warning RC4 and DES are considered weak ciphers and their use
* constitutes a security risk. Arm recommends considering stronger
* ciphers instead.
*/
typedef enum {
MBEDTLS_CIPHER_ID_NONE = 0,
MBEDTLS_CIPHER_ID_NULL,
MBEDTLS_CIPHER_ID_AES,
MBEDTLS_CIPHER_ID_DES,
MBEDTLS_CIPHER_ID_3DES,
MBEDTLS_CIPHER_ID_CAMELLIA,
MBEDTLS_CIPHER_ID_BLOWFISH,
MBEDTLS_CIPHER_ID_ARC4,
MBEDTLS_CIPHER_ID_ARIA,
MBEDTLS_CIPHER_ID_NONE = 0, /**< Placeholder to mark the end of cipher ID lists. */
MBEDTLS_CIPHER_ID_NULL, /**< The identity cipher, treated as a stream cipher. */
MBEDTLS_CIPHER_ID_AES, /**< The AES cipher. */
MBEDTLS_CIPHER_ID_DES, /**< The DES cipher. */
MBEDTLS_CIPHER_ID_3DES, /**< The Triple DES cipher. */
MBEDTLS_CIPHER_ID_CAMELLIA, /**< The Camellia cipher. */
MBEDTLS_CIPHER_ID_BLOWFISH, /**< The Blowfish cipher. */
MBEDTLS_CIPHER_ID_ARC4, /**< The RC4 cipher. */
MBEDTLS_CIPHER_ID_ARIA, /**< The Aria cipher. */
} mbedtls_cipher_id_t;
/**
* \brief An enumeration of supported (cipher, mode) pairs.
* \brief Supported {cipher type, cipher mode} pairs.
*
* \warning ARC4 and DES are considered weak ciphers and their use
* constitutes a security risk. We recommend considering stronger
* \warning RC4 and DES are considered weak ciphers and their use
* constitutes a security risk. Arm recommends considering stronger
* ciphers instead.
*/
typedef enum {
MBEDTLS_CIPHER_NONE = 0,
MBEDTLS_CIPHER_NULL,
MBEDTLS_CIPHER_AES_128_ECB,
MBEDTLS_CIPHER_AES_192_ECB,
MBEDTLS_CIPHER_AES_256_ECB,
MBEDTLS_CIPHER_AES_128_CBC,
MBEDTLS_CIPHER_AES_192_CBC,
MBEDTLS_CIPHER_AES_256_CBC,
MBEDTLS_CIPHER_AES_128_CFB128,
MBEDTLS_CIPHER_AES_192_CFB128,
MBEDTLS_CIPHER_AES_256_CFB128,
MBEDTLS_CIPHER_AES_128_CTR,
MBEDTLS_CIPHER_AES_192_CTR,
MBEDTLS_CIPHER_AES_256_CTR,
MBEDTLS_CIPHER_AES_128_GCM,
MBEDTLS_CIPHER_AES_192_GCM,
MBEDTLS_CIPHER_AES_256_GCM,
MBEDTLS_CIPHER_CAMELLIA_128_ECB,
MBEDTLS_CIPHER_CAMELLIA_192_ECB,
MBEDTLS_CIPHER_CAMELLIA_256_ECB,
MBEDTLS_CIPHER_CAMELLIA_128_CBC,
MBEDTLS_CIPHER_CAMELLIA_192_CBC,
MBEDTLS_CIPHER_CAMELLIA_256_CBC,
MBEDTLS_CIPHER_CAMELLIA_128_CFB128,
MBEDTLS_CIPHER_CAMELLIA_192_CFB128,
MBEDTLS_CIPHER_CAMELLIA_256_CFB128,
MBEDTLS_CIPHER_CAMELLIA_128_CTR,
MBEDTLS_CIPHER_CAMELLIA_192_CTR,
MBEDTLS_CIPHER_CAMELLIA_256_CTR,
MBEDTLS_CIPHER_CAMELLIA_128_GCM,
MBEDTLS_CIPHER_CAMELLIA_192_GCM,
MBEDTLS_CIPHER_CAMELLIA_256_GCM,
MBEDTLS_CIPHER_DES_ECB,
MBEDTLS_CIPHER_DES_CBC,
MBEDTLS_CIPHER_DES_EDE_ECB,
MBEDTLS_CIPHER_DES_EDE_CBC,
MBEDTLS_CIPHER_DES_EDE3_ECB,
MBEDTLS_CIPHER_DES_EDE3_CBC,
MBEDTLS_CIPHER_BLOWFISH_ECB,
MBEDTLS_CIPHER_BLOWFISH_CBC,
MBEDTLS_CIPHER_BLOWFISH_CFB64,
MBEDTLS_CIPHER_BLOWFISH_CTR,
MBEDTLS_CIPHER_ARC4_128,
MBEDTLS_CIPHER_AES_128_CCM,
MBEDTLS_CIPHER_AES_192_CCM,
MBEDTLS_CIPHER_AES_256_CCM,
MBEDTLS_CIPHER_CAMELLIA_128_CCM,
MBEDTLS_CIPHER_CAMELLIA_192_CCM,
MBEDTLS_CIPHER_CAMELLIA_256_CCM,
MBEDTLS_CIPHER_ARIA_128_ECB,
MBEDTLS_CIPHER_ARIA_192_ECB,
MBEDTLS_CIPHER_ARIA_256_ECB,
MBEDTLS_CIPHER_ARIA_128_CBC,
MBEDTLS_CIPHER_ARIA_192_CBC,
MBEDTLS_CIPHER_ARIA_256_CBC,
MBEDTLS_CIPHER_ARIA_128_CFB128,
MBEDTLS_CIPHER_ARIA_192_CFB128,
MBEDTLS_CIPHER_ARIA_256_CFB128,
MBEDTLS_CIPHER_ARIA_128_CTR,
MBEDTLS_CIPHER_ARIA_192_CTR,
MBEDTLS_CIPHER_ARIA_256_CTR,
MBEDTLS_CIPHER_ARIA_128_GCM,
MBEDTLS_CIPHER_ARIA_192_GCM,
MBEDTLS_CIPHER_ARIA_256_GCM,
MBEDTLS_CIPHER_ARIA_128_CCM,
MBEDTLS_CIPHER_ARIA_192_CCM,
MBEDTLS_CIPHER_ARIA_256_CCM,
MBEDTLS_CIPHER_NONE = 0, /**< Placeholder to mark the end of cipher-pair lists. */
MBEDTLS_CIPHER_NULL, /**< The identity stream cipher. */
MBEDTLS_CIPHER_AES_128_ECB, /**< AES cipher with 128-bit ECB mode. */
MBEDTLS_CIPHER_AES_192_ECB, /**< AES cipher with 192-bit ECB mode. */
MBEDTLS_CIPHER_AES_256_ECB, /**< AES cipher with 256-bit ECB mode. */
MBEDTLS_CIPHER_AES_128_CBC, /**< AES cipher with 128-bit CBC mode. */
MBEDTLS_CIPHER_AES_192_CBC, /**< AES cipher with 192-bit CBC mode. */
MBEDTLS_CIPHER_AES_256_CBC, /**< AES cipher with 256-bit CBC mode. */
MBEDTLS_CIPHER_AES_128_CFB128, /**< AES cipher with 128-bit CFB128 mode. */
MBEDTLS_CIPHER_AES_192_CFB128, /**< AES cipher with 192-bit CFB128 mode. */
MBEDTLS_CIPHER_AES_256_CFB128, /**< AES cipher with 256-bit CFB128 mode. */
MBEDTLS_CIPHER_AES_128_CTR, /**< AES cipher with 128-bit CTR mode. */
MBEDTLS_CIPHER_AES_192_CTR, /**< AES cipher with 192-bit CTR mode. */
MBEDTLS_CIPHER_AES_256_CTR, /**< AES cipher with 256-bit CTR mode. */
MBEDTLS_CIPHER_AES_128_GCM, /**< AES cipher with 128-bit GCM mode. */
MBEDTLS_CIPHER_AES_192_GCM, /**< AES cipher with 192-bit GCM mode. */
MBEDTLS_CIPHER_AES_256_GCM, /**< AES cipher with 256-bit GCM mode. */
MBEDTLS_CIPHER_CAMELLIA_128_ECB, /**< Camellia cipher with 128-bit ECB mode. */
MBEDTLS_CIPHER_CAMELLIA_192_ECB, /**< Camellia cipher with 192-bit ECB mode. */
MBEDTLS_CIPHER_CAMELLIA_256_ECB, /**< Camellia cipher with 256-bit ECB mode. */
MBEDTLS_CIPHER_CAMELLIA_128_CBC, /**< Camellia cipher with 128-bit CBC mode. */
MBEDTLS_CIPHER_CAMELLIA_192_CBC, /**< Camellia cipher with 192-bit CBC mode. */
MBEDTLS_CIPHER_CAMELLIA_256_CBC, /**< Camellia cipher with 256-bit CBC mode. */
MBEDTLS_CIPHER_CAMELLIA_128_CFB128, /**< Camellia cipher with 128-bit CFB128 mode. */
MBEDTLS_CIPHER_CAMELLIA_192_CFB128, /**< Camellia cipher with 192-bit CFB128 mode. */
MBEDTLS_CIPHER_CAMELLIA_256_CFB128, /**< Camellia cipher with 256-bit CFB128 mode. */
MBEDTLS_CIPHER_CAMELLIA_128_CTR, /**< Camellia cipher with 128-bit CTR mode. */
MBEDTLS_CIPHER_CAMELLIA_192_CTR, /**< Camellia cipher with 192-bit CTR mode. */
MBEDTLS_CIPHER_CAMELLIA_256_CTR, /**< Camellia cipher with 256-bit CTR mode. */
MBEDTLS_CIPHER_CAMELLIA_128_GCM, /**< Camellia cipher with 128-bit GCM mode. */
MBEDTLS_CIPHER_CAMELLIA_192_GCM, /**< Camellia cipher with 192-bit GCM mode. */
MBEDTLS_CIPHER_CAMELLIA_256_GCM, /**< Camellia cipher with 256-bit GCM mode. */
MBEDTLS_CIPHER_DES_ECB, /**< DES cipher with ECB mode. */
MBEDTLS_CIPHER_DES_CBC, /**< DES cipher with CBC mode. */
MBEDTLS_CIPHER_DES_EDE_ECB, /**< DES cipher with EDE ECB mode. */
MBEDTLS_CIPHER_DES_EDE_CBC, /**< DES cipher with EDE CBC mode. */
MBEDTLS_CIPHER_DES_EDE3_ECB, /**< DES cipher with EDE3 ECB mode. */
MBEDTLS_CIPHER_DES_EDE3_CBC, /**< DES cipher with EDE3 CBC mode. */
MBEDTLS_CIPHER_BLOWFISH_ECB, /**< Blowfish cipher with ECB mode. */
MBEDTLS_CIPHER_BLOWFISH_CBC, /**< Blowfish cipher with CBC mode. */
MBEDTLS_CIPHER_BLOWFISH_CFB64, /**< Blowfish cipher with CFB64 mode. */
MBEDTLS_CIPHER_BLOWFISH_CTR, /**< Blowfish cipher with CTR mode. */
MBEDTLS_CIPHER_ARC4_128, /**< RC4 cipher with 128-bit mode. */
MBEDTLS_CIPHER_AES_128_CCM, /**< AES cipher with 128-bit CCM mode. */
MBEDTLS_CIPHER_AES_192_CCM, /**< AES cipher with 192-bit CCM mode. */
MBEDTLS_CIPHER_AES_256_CCM, /**< AES cipher with 256-bit CCM mode. */
MBEDTLS_CIPHER_CAMELLIA_128_CCM, /**< Camellia cipher with 128-bit CCM mode. */
MBEDTLS_CIPHER_CAMELLIA_192_CCM, /**< Camellia cipher with 192-bit CCM mode. */
MBEDTLS_CIPHER_CAMELLIA_256_CCM, /**< Camellia cipher with 256-bit CCM mode. */
MBEDTLS_CIPHER_ARIA_128_ECB, /**< Aria cipher with 128-bit key and ECB mode. */
MBEDTLS_CIPHER_ARIA_192_ECB, /**< Aria cipher with 192-bit key and ECB mode. */
MBEDTLS_CIPHER_ARIA_256_ECB, /**< Aria cipher with 256-bit key and ECB mode. */
MBEDTLS_CIPHER_ARIA_128_CBC, /**< Aria cipher with 128-bit key and CBC mode. */
MBEDTLS_CIPHER_ARIA_192_CBC, /**< Aria cipher with 192-bit key and CBC mode. */
MBEDTLS_CIPHER_ARIA_256_CBC, /**< Aria cipher with 256-bit key and CBC mode. */
MBEDTLS_CIPHER_ARIA_128_CFB128, /**< Aria cipher with 128-bit key and CFB-128 mode. */
MBEDTLS_CIPHER_ARIA_192_CFB128, /**< Aria cipher with 192-bit key and CFB-128 mode. */
MBEDTLS_CIPHER_ARIA_256_CFB128, /**< Aria cipher with 256-bit key and CFB-128 mode. */
MBEDTLS_CIPHER_ARIA_128_CTR, /**< Aria cipher with 128-bit key and CTR mode. */
MBEDTLS_CIPHER_ARIA_192_CTR, /**< Aria cipher with 192-bit key and CTR mode. */
MBEDTLS_CIPHER_ARIA_256_CTR, /**< Aria cipher with 256-bit key and CTR mode. */
MBEDTLS_CIPHER_ARIA_128_GCM, /**< Aria cipher with 128-bit key and GCM mode. */
MBEDTLS_CIPHER_ARIA_192_GCM, /**< Aria cipher with 192-bit key and GCM mode. */
MBEDTLS_CIPHER_ARIA_256_GCM, /**< Aria cipher with 256-bit key and GCM mode. */
MBEDTLS_CIPHER_ARIA_128_CCM, /**< Aria cipher with 128-bit key and CCM mode. */
MBEDTLS_CIPHER_ARIA_192_CCM, /**< Aria cipher with 192-bit key and CCM mode. */
MBEDTLS_CIPHER_ARIA_256_CCM, /**< Aria cipher with 256-bit key and CCM mode. */
} mbedtls_cipher_type_t;
/** Supported cipher modes. */
typedef enum {
MBEDTLS_MODE_NONE = 0,
MBEDTLS_MODE_ECB,
MBEDTLS_MODE_CBC,
MBEDTLS_MODE_CFB,
MBEDTLS_MODE_OFB, /* Unused! */
MBEDTLS_MODE_CTR,
MBEDTLS_MODE_GCM,
MBEDTLS_MODE_STREAM,
MBEDTLS_MODE_CCM,
MBEDTLS_MODE_NONE = 0, /**< None. */
MBEDTLS_MODE_ECB, /**< The ECB cipher mode. */
MBEDTLS_MODE_CBC, /**< The CBC cipher mode. */
MBEDTLS_MODE_CFB, /**< The CFB cipher mode. */
MBEDTLS_MODE_OFB, /**< The OFB cipher mode - unsupported. */
MBEDTLS_MODE_CTR, /**< The CTR cipher mode. */
MBEDTLS_MODE_GCM, /**< The GCM cipher mode. */
MBEDTLS_MODE_STREAM, /**< The stream cipher mode. */
MBEDTLS_MODE_CCM, /**< The CCM cipher mode. */
} mbedtls_cipher_mode_t;
/** Supported cipher padding types. */
@ -182,8 +184,8 @@ typedef enum {
MBEDTLS_PADDING_PKCS7 = 0, /**< PKCS7 padding (default). */
MBEDTLS_PADDING_ONE_AND_ZEROS, /**< ISO/IEC 7816-4 padding. */
MBEDTLS_PADDING_ZEROS_AND_LEN, /**< ANSI X.923 padding. */
MBEDTLS_PADDING_ZEROS, /**< zero padding (not reversible). */
MBEDTLS_PADDING_NONE, /**< never pad (full blocks only). */
MBEDTLS_PADDING_ZEROS, /**< Zero padding (not reversible). */
MBEDTLS_PADDING_NONE, /**< Never pad (full blocks only). */
} mbedtls_cipher_padding_t;
/** Type of operation. */
@ -247,7 +249,10 @@ typedef struct {
*/
unsigned int iv_size;
/** Flags to set. For example, if the cipher supports variable IV sizes or variable key sizes. */
/** Bitflag comprised of MBEDTLS_CIPHER_VARIABLE_IV_LEN and
* MBEDTLS_CIPHER_VARIABLE_KEY_LEN indicating whether the
* cipher supports variable IV or variable key sizes, respectively.
*/
int flags;
/** The block size, in Bytes. */
@ -318,7 +323,8 @@ const int *mbedtls_cipher_list( void );
* \param cipher_name Name of the cipher to search for.
*
* \return The cipher information structure associated with the
* given \p cipher_name, or NULL if not found.
* given \p cipher_name.
* \return NULL if the associated cipher information is not found.
*/
const mbedtls_cipher_info_t *mbedtls_cipher_info_from_string( const char *cipher_name );
@ -329,7 +335,8 @@ const mbedtls_cipher_info_t *mbedtls_cipher_info_from_string( const char *cipher
* \param cipher_type Type of the cipher to search for.
*
* \return The cipher information structure associated with the
* given \p cipher_type, or NULL if not found.
* given \p cipher_type.
* \return NULL if the associated cipher information is not found.
*/
const mbedtls_cipher_info_t *mbedtls_cipher_info_from_type( const mbedtls_cipher_type_t cipher_type );
@ -344,7 +351,8 @@ const mbedtls_cipher_info_t *mbedtls_cipher_info_from_type( const mbedtls_cipher
* \param mode The cipher mode. For example, #MBEDTLS_MODE_CBC.
*
* \return The cipher information structure associated with the
* given \p cipher_id, or NULL if not found.
* given \p cipher_id.
* \return NULL if the associated cipher information is not found.
*/
const mbedtls_cipher_info_t *mbedtls_cipher_info_from_values( const mbedtls_cipher_id_t cipher_id,
int key_bitlen,
@ -371,10 +379,11 @@ void mbedtls_cipher_free( mbedtls_cipher_context_t *ctx );
* \param ctx The context to initialize. May not be NULL.
* \param cipher_info The cipher to use.
*
* \return \c 0 on success,
* #MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA on parameter failure,
* #MBEDTLS_ERR_CIPHER_ALLOC_FAILED if allocation of the
* cipher-specific context failed.
* \return \c 0 on success.
* \return #MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA on
* parameter-verification failure.
* \return #MBEDTLS_ERR_CIPHER_ALLOC_FAILED if allocation of the
* cipher-specific context fails.
*
* \internal Currently, the function also clears the structure.
* In future versions, the caller will be required to call
@ -387,8 +396,8 @@ int mbedtls_cipher_setup( mbedtls_cipher_context_t *ctx, const mbedtls_cipher_in
*
* \param ctx The context of the cipher. Must be initialized.
*
* \return The size of the blocks of the cipher, or zero if \p ctx
* has not been initialized.
* \return The size of the blocks of the cipher.
* \return 0 if \p ctx has not been initialized.
*/
static inline unsigned int mbedtls_cipher_get_block_size( const mbedtls_cipher_context_t *ctx )
{
@ -404,8 +413,8 @@ static inline unsigned int mbedtls_cipher_get_block_size( const mbedtls_cipher_c
*
* \param ctx The context of the cipher. Must be initialized.
*
* \return The mode of operation, or #MBEDTLS_MODE_NONE if
* \p ctx has not been initialized.
* \return The mode of operation.
* \return #MBEDTLS_MODE_NONE if \p ctx has not been initialized.
*/
static inline mbedtls_cipher_mode_t mbedtls_cipher_get_cipher_mode( const mbedtls_cipher_context_t *ctx )
{
@ -421,9 +430,9 @@ static inline mbedtls_cipher_mode_t mbedtls_cipher_get_cipher_mode( const mbedtl
*
* \param ctx The context of the cipher. Must be initialized.
*
* \return <ul><li>If no IV has been set: the recommended IV size.
* 0 for ciphers not using IV or nonce.</li>
* <li>If IV has already been set: the actual size.</li></ul>
* \return The recommended IV size if no IV has been set.
* \return \c 0 for ciphers not using an IV or a nonce.
* \return The actual size if an IV has been set.
*/
static inline int mbedtls_cipher_get_iv_size( const mbedtls_cipher_context_t *ctx )
{
@ -441,8 +450,8 @@ static inline int mbedtls_cipher_get_iv_size( const mbedtls_cipher_context_t *ct
*
* \param ctx The context of the cipher. Must be initialized.
*
* \return The type of the cipher, or #MBEDTLS_CIPHER_NONE if
* \p ctx has not been initialized.
* \return The type of the cipher.
* \return #MBEDTLS_CIPHER_NONE if \p ctx has not been initialized.
*/
static inline mbedtls_cipher_type_t mbedtls_cipher_get_type( const mbedtls_cipher_context_t *ctx )
{
@ -458,8 +467,8 @@ static inline mbedtls_cipher_type_t mbedtls_cipher_get_type( const mbedtls_ciphe
*
* \param ctx The context of the cipher. Must be initialized.
*
* \return The name of the cipher, or NULL if \p ctx has not
* been not initialized.
* \return The name of the cipher.
* \return NULL if \p ctx has not been not initialized.
*/
static inline const char *mbedtls_cipher_get_name( const mbedtls_cipher_context_t *ctx )
{
@ -474,8 +483,8 @@ static inline const char *mbedtls_cipher_get_name( const mbedtls_cipher_context_
*
* \param ctx The context of the cipher. Must be initialized.
*
* \return The key length of the cipher in bits, or
* #MBEDTLS_KEY_LENGTH_NONE if ctx \p has not been
* \return The key length of the cipher in bits.
* \return #MBEDTLS_KEY_LENGTH_NONE if ctx \p has not been
* initialized.
*/
static inline int mbedtls_cipher_get_key_bitlen( const mbedtls_cipher_context_t *ctx )
@ -491,9 +500,8 @@ static inline int mbedtls_cipher_get_key_bitlen( const mbedtls_cipher_context_t
*
* \param ctx The context of the cipher. Must be initialized.
*
* \return The type of operation: #MBEDTLS_ENCRYPT or
* #MBEDTLS_DECRYPT, or #MBEDTLS_OPERATION_NONE if \p ctx
* has not been initialized.
* \return The type of operation: #MBEDTLS_ENCRYPT or #MBEDTLS_DECRYPT.
* \return #MBEDTLS_OPERATION_NONE if \p ctx has not been initialized.
*/
static inline mbedtls_operation_t mbedtls_cipher_get_operation( const mbedtls_cipher_context_t *ctx )
{
@ -514,9 +522,10 @@ static inline mbedtls_operation_t mbedtls_cipher_get_operation( const mbedtls_ci
* \param operation The operation that the key will be used for:
* #MBEDTLS_ENCRYPT or #MBEDTLS_DECRYPT.
*
* \returns \c 0 on success, #MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA if
* parameter verification fails, or a cipher-specific
* error code.
* \return \c 0 on success.
* \return #MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA on
* parameter-verification failure.
* \return A cipher-specific error code on failure.
*/
int mbedtls_cipher_setkey( mbedtls_cipher_context_t *ctx, const unsigned char *key,
int key_bitlen, const mbedtls_operation_t operation );
@ -531,9 +540,10 @@ int mbedtls_cipher_setkey( mbedtls_cipher_context_t *ctx, const unsigned char *k
* \param ctx The generic cipher context.
* \param mode The padding mode.
*
* \returns \c 0 on success, #MBEDTLS_ERR_CIPHER_FEATURE_UNAVAILABLE
* if the selected padding mode is not supported, or
* #MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA if the cipher mode
* \return \c 0 on success.
* \return #MBEDTLS_ERR_CIPHER_FEATURE_UNAVAILABLE
* if the selected padding mode is not supported.
* \return #MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA if the cipher mode
* does not support padding.
*/
int mbedtls_cipher_set_padding_mode( mbedtls_cipher_context_t *ctx, mbedtls_cipher_padding_t mode );
@ -543,15 +553,17 @@ int mbedtls_cipher_set_padding_mode( mbedtls_cipher_context_t *ctx, mbedtls_ciph
* \brief This function sets the initialization vector (IV)
* or nonce.
*
* \note Some ciphers do not use IVs nor nonce. For these
* ciphers, this function has no effect.
*
* \param ctx The generic cipher context.
* \param iv The IV to use, or NONCE_COUNTER for CTR-mode ciphers.
* \param iv_len The IV length for ciphers with variable-size IV.
* This parameter is discarded by ciphers with fixed-size IV.
*
* \returns \c 0 on success, or #MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA
*
* \note Some ciphers do not use IVs nor nonce. For these
* ciphers, this function has no effect.
* \return \c 0 on success.
* \return #MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA on
* parameter-verification failure.
*/
int mbedtls_cipher_set_iv( mbedtls_cipher_context_t *ctx,
const unsigned char *iv, size_t iv_len );
@ -561,8 +573,9 @@ int mbedtls_cipher_set_iv( mbedtls_cipher_context_t *ctx,
*
* \param ctx The generic cipher context.
*
* \returns \c 0 on success, #MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA
* if parameter verification fails.
* \return \c 0 on success.
* \return #MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA on
* parameter-verification failure.
*/
int mbedtls_cipher_reset( mbedtls_cipher_context_t *ctx );
@ -576,7 +589,8 @@ int mbedtls_cipher_reset( mbedtls_cipher_context_t *ctx );
* \param ad The additional data to use.
* \param ad_len the Length of \p ad.
*
* \return \c 0 on success, or a specific error code on failure.
* \return \c 0 on success.
* \return A specific error code on failure.
*/
int mbedtls_cipher_update_ad( mbedtls_cipher_context_t *ctx,
const unsigned char *ad, size_t ad_len );
@ -592,6 +606,11 @@ int mbedtls_cipher_update_ad( mbedtls_cipher_context_t *ctx,
* Exception: For MBEDTLS_MODE_ECB, expects a single block
* in size. For example, 16 Bytes for AES.
*
* \note If the underlying cipher is used in GCM mode, all calls
* to this function, except for the last one before
* mbedtls_cipher_finish(), must have \p ilen as a
* multiple of the block size of the cipher.
*
* \param ctx The generic cipher context.
* \param input The buffer holding the input data.
* \param ilen The length of the input data.
@ -601,16 +620,12 @@ int mbedtls_cipher_update_ad( mbedtls_cipher_context_t *ctx,
* \param olen The length of the output data, to be updated with the
* actual number of Bytes written.
*
* \returns \c 0 on success, #MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA if
* parameter verification fails,
* #MBEDTLS_ERR_CIPHER_FEATURE_UNAVAILABLE on an
* unsupported mode for a cipher, or a cipher-specific
* error code.
*
* \note If the underlying cipher is GCM, all calls to this
* function, except the last one before
* mbedtls_cipher_finish(). Must have \p ilen as a
* multiple of the block_size.
* \return \c 0 on success.
* \return #MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA on
* parameter-verification failure.
* \return #MBEDTLS_ERR_CIPHER_FEATURE_UNAVAILABLE on an
* unsupported mode for a cipher.
* \return A cipher-specific error code on failure.
*/
int mbedtls_cipher_update( mbedtls_cipher_context_t *ctx, const unsigned char *input,
size_t ilen, unsigned char *output, size_t *olen );
@ -625,13 +640,14 @@ int mbedtls_cipher_update( mbedtls_cipher_context_t *ctx, const unsigned char *i
* \param output The buffer to write data to. Needs block_size available.
* \param olen The length of the data written to the \p output buffer.
*
* \returns \c 0 on success, #MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA if
* parameter verification fails,
* #MBEDTLS_ERR_CIPHER_FULL_BLOCK_EXPECTED if decryption
* expected a full block but was not provided one,
* #MBEDTLS_ERR_CIPHER_INVALID_PADDING on invalid padding
* while decrypting, or a cipher-specific error code
* on failure for any other reason.
* \return \c 0 on success.
* \return #MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA on
* parameter-verification failure.
* \return #MBEDTLS_ERR_CIPHER_FULL_BLOCK_EXPECTED on decryption
* expecting a full block but not receiving one.
* \return #MBEDTLS_ERR_CIPHER_INVALID_PADDING on invalid padding
* while decrypting.
* \return A cipher-specific error code on failure.
*/
int mbedtls_cipher_finish( mbedtls_cipher_context_t *ctx,
unsigned char *output, size_t *olen );
@ -646,7 +662,8 @@ int mbedtls_cipher_finish( mbedtls_cipher_context_t *ctx,
* \param tag The buffer to write the tag to.
* \param tag_len The length of the tag to write.
*
* \return \c 0 on success, or a specific error code on failure.
* \return \c 0 on success.
* \return A specific error code on failure.
*/
int mbedtls_cipher_write_tag( mbedtls_cipher_context_t *ctx,
unsigned char *tag, size_t tag_len );
@ -660,7 +677,8 @@ int mbedtls_cipher_write_tag( mbedtls_cipher_context_t *ctx,
* \param tag The buffer holding the tag.
* \param tag_len The length of the tag to check.
*
* \return \c 0 on success, or a specific error code on failure.
* \return \c 0 on success.
* \return A specific error code on failure.
*/
int mbedtls_cipher_check_tag( mbedtls_cipher_context_t *ctx,
const unsigned char *tag, size_t tag_len );
@ -686,13 +704,14 @@ int mbedtls_cipher_check_tag( mbedtls_cipher_context_t *ctx,
* \note Some ciphers do not use IVs nor nonce. For these
* ciphers, use \p iv = NULL and \p iv_len = 0.
*
* \returns \c 0 on success, or
* #MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA, or
* #MBEDTLS_ERR_CIPHER_FULL_BLOCK_EXPECTED if decryption
* expected a full block but was not provided one, or
* #MBEDTLS_ERR_CIPHER_INVALID_PADDING on invalid padding
* while decrypting, or a cipher-specific error code on
* failure for any other reason.
* \return \c 0 on success.
* \return #MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA on
* parameter-verification failure.
* \return #MBEDTLS_ERR_CIPHER_FULL_BLOCK_EXPECTED on decryption
* expecting a full block but not receiving one.
* \return #MBEDTLS_ERR_CIPHER_INVALID_PADDING on invalid padding
* while decrypting.
* \return A cipher-specific error code on failure.
*/
int mbedtls_cipher_crypt( mbedtls_cipher_context_t *ctx,
const unsigned char *iv, size_t iv_len,
@ -718,9 +737,10 @@ int mbedtls_cipher_crypt( mbedtls_cipher_context_t *ctx,
* \param tag The buffer for the authentication tag.
* \param tag_len The desired length of the authentication tag.
*
* \returns \c 0 on success, or
* #MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA, or
* a cipher-specific error code.
* \return \c 0 on success.
* \return #MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA on
* parameter-verification failure.
* \return A cipher-specific error code on failure.
*/
int mbedtls_cipher_auth_encrypt( mbedtls_cipher_context_t *ctx,
const unsigned char *iv, size_t iv_len,
@ -732,6 +752,10 @@ int mbedtls_cipher_auth_encrypt( mbedtls_cipher_context_t *ctx,
/**
* \brief The generic autenticated decryption (AEAD) function.
*
* \note If the data is not authentic, then the output buffer
* is zeroed out to prevent the unauthentic plaintext being
* used, making this interface safer.
*
* \param ctx The generic cipher context.
* \param iv The IV to use, or NONCE_COUNTER for CTR-mode ciphers.
* \param iv_len The IV length for ciphers with variable-size IV.
@ -747,14 +771,11 @@ int mbedtls_cipher_auth_encrypt( mbedtls_cipher_context_t *ctx,
* \param tag The buffer holding the authentication tag.
* \param tag_len The length of the authentication tag.
*
* \returns \c 0 on success, or
* #MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA, or
* #MBEDTLS_ERR_CIPHER_AUTH_FAILED if data is not authentic,
* or a cipher-specific error code on failure for any other reason.
*
* \note If the data is not authentic, then the output buffer
* is zeroed out to prevent the unauthentic plaintext being
* used, making this interface safer.
* \return \c 0 on success.
* \return #MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA on
* parameter-verification failure.
* \return #MBEDTLS_ERR_CIPHER_AUTH_FAILED if data is not authentic.
* \return A cipher-specific error code on failure.
*/
int mbedtls_cipher_auth_decrypt( mbedtls_cipher_context_t *ctx,
const unsigned char *iv, size_t iv_len,

54
include/mbedtls/cmac.h
View file

@ -1,8 +1,10 @@
/**
* \file cmac.h
*
* \brief The Cipher-based Message Authentication Code (CMAC) Mode for
* Authentication.
* \brief This file contains CMAC definitions and functions.
*
* The Cipher-based Message Authentication Code (CMAC) Mode for
* Authentication is defined in <em>RFC-4493: The AES-CMAC Algorithm</em>.
*/
/*
* Copyright (C) 2015-2018, Arm Limited (or its affiliates), All Rights Reserved
@ -38,9 +40,9 @@ extern "C" {
#define MBEDTLS_DES3_BLOCK_SIZE 8
#if defined(MBEDTLS_AES_C)
#define MBEDTLS_CIPHER_BLKSIZE_MAX 16 /* The longest block used by CMAC is that of AES. */
#define MBEDTLS_CIPHER_BLKSIZE_MAX 16 /**< The longest block used by CMAC is that of AES. */
#else
#define MBEDTLS_CIPHER_BLKSIZE_MAX 8 /* The longest block used by CMAC is that of 3DES. */
#define MBEDTLS_CIPHER_BLKSIZE_MAX 8 /**< The longest block used by CMAC is that of 3DES. */
#endif
#if !defined(MBEDTLS_CMAC_ALT)
@ -61,22 +63,25 @@ struct mbedtls_cmac_context_t
size_t unprocessed_len;
};
#else /* !MBEDTLS_CMAC_ALT */
#include "cmac_alt.h"
#endif /* !MBEDTLS_CMAC_ALT */
/**
* \brief This function sets the CMAC key, and prepares to authenticate
* the input data.
* Must be called with an initialized cipher context.
*
* \param ctx The cipher context used for the CMAC operation, initialized
* as one of the following types:<ul>
* <li>MBEDTLS_CIPHER_AES_128_ECB</li>
* <li>MBEDTLS_CIPHER_AES_192_ECB</li>
* <li>MBEDTLS_CIPHER_AES_256_ECB</li>
* <li>MBEDTLS_CIPHER_DES_EDE3_ECB</li></ul>
* as one of the following types: MBEDTLS_CIPHER_AES_128_ECB,
* MBEDTLS_CIPHER_AES_192_ECB, MBEDTLS_CIPHER_AES_256_ECB,
* or MBEDTLS_CIPHER_DES_EDE3_ECB.
* \param key The CMAC key.
* \param keybits The length of the CMAC key in bits.
* Must be supported by the cipher.
*
* \return \c 0 on success, or a cipher-specific error code.
* \return \c 0 on success.
* \return A cipher-specific error code on failure.
*/
int mbedtls_cipher_cmac_starts( mbedtls_cipher_context_t *ctx,
const unsigned char *key, size_t keybits );
@ -93,8 +98,9 @@ int mbedtls_cipher_cmac_starts( mbedtls_cipher_context_t *ctx,
* \param input The buffer holding the input data.
* \param ilen The length of the input data.
*
* \returns \c 0 on success, or #MBEDTLS_ERR_MD_BAD_INPUT_DATA
* if parameter verification fails.
* \return \c 0 on success.
* \return #MBEDTLS_ERR_MD_BAD_INPUT_DATA
* if parameter verification fails.
*/
int mbedtls_cipher_cmac_update( mbedtls_cipher_context_t *ctx,
const unsigned char *input, size_t ilen );
@ -110,7 +116,8 @@ int mbedtls_cipher_cmac_update( mbedtls_cipher_context_t *ctx,
* \param ctx The cipher context used for the CMAC operation.
* \param output The output buffer for the CMAC checksum result.
*
* \returns \c 0 on success, or #MBEDTLS_ERR_MD_BAD_INPUT_DATA
* \return \c 0 on success.
* \return #MBEDTLS_ERR_MD_BAD_INPUT_DATA
* if parameter verification fails.
*/
int mbedtls_cipher_cmac_finish( mbedtls_cipher_context_t *ctx,
@ -126,7 +133,8 @@ int mbedtls_cipher_cmac_finish( mbedtls_cipher_context_t *ctx,
*
* \param ctx The cipher context used for the CMAC operation.
*
* \returns \c 0 on success, or #MBEDTLS_ERR_MD_BAD_INPUT_DATA
* \return \c 0 on success.
* \return #MBEDTLS_ERR_MD_BAD_INPUT_DATA
* if parameter verification fails.
*/
int mbedtls_cipher_cmac_reset( mbedtls_cipher_context_t *ctx );
@ -149,7 +157,8 @@ int mbedtls_cipher_cmac_reset( mbedtls_cipher_context_t *ctx );
* \param ilen The length of the input data.
* \param output The buffer for the generic CMAC result.
*
* \returns \c 0 on success, or #MBEDTLS_ERR_MD_BAD_INPUT_DATA
* \return \c 0 on success.
* \return #MBEDTLS_ERR_MD_BAD_INPUT_DATA
* if parameter verification fails.
*/
int mbedtls_cipher_cmac( const mbedtls_cipher_info_t *cipher_info,
@ -180,23 +189,12 @@ int mbedtls_aes_cmac_prf_128( const unsigned char *key, size_t key_len,
unsigned char output[16] );
#endif /* MBEDTLS_AES_C */
#ifdef __cplusplus
}
#endif
#else /* !MBEDTLS_CMAC_ALT */
#include "cmac_alt.h"
#endif /* !MBEDTLS_CMAC_ALT */
#ifdef __cplusplus
extern "C" {
#endif
#if defined(MBEDTLS_SELF_TEST) && ( defined(MBEDTLS_AES_C) || defined(MBEDTLS_DES_C) )
/**
* \brief The CMAC checkup routine.
*
* \return \c 0 on success, or \c 1 on failure.
* \return \c 0 on success.
* \return \c 1 on failure.
*/
int mbedtls_cmac_self_test( int verbose );
#endif /* MBEDTLS_SELF_TEST && ( MBEDTLS_AES_C || MBEDTLS_DES_C ) */

64
include/mbedtls/config.h
View file

@ -446,12 +446,45 @@
/**
* \def MBEDTLS_AES_ROM_TABLES
*
* Store the AES tables in ROM.
* Use precomputed AES tables stored in ROM.
*
* Uncomment this macro to use precomputed AES tables stored in ROM.
* Comment this macro to generate AES tables in RAM at runtime.
*
* Tradeoff: Using precomputed ROM tables reduces RAM usage by ~8kb
* (or ~2kb if \c MBEDTLS_AES_FEWER_TABLES is used) and reduces the
* initialization time before the first AES operation can be performed.
* It comes at the cost of additional ~8kb ROM use (resp. ~2kb if \c
* MBEDTLS_AES_FEWER_TABLES below is used), and potentially degraded
* performance if ROM access is slower than RAM access.
*
* This option is independent of \c MBEDTLS_AES_FEWER_TABLES.
*
* Uncomment this macro to store the AES tables in ROM.
*/
//#define MBEDTLS_AES_ROM_TABLES
/**
* \def MBEDTLS_AES_FEWER_TABLES
*
* Use less ROM/RAM for AES tables.
*
* Uncommenting this macro omits 75% of the AES tables from
* ROM / RAM (depending on the value of \c MBEDTLS_AES_ROM_TABLES)
* by computing their values on the fly during operations
* (the tables are entry-wise rotations of one another).
*
* Tradeoff: Uncommenting this reduces the RAM / ROM footprint
* by ~6kb but at the cost of more arithmetic operations during
* runtime. Specifically, one has to compare 4 accesses within
* different tables to 4 accesses with additional arithmetic
* operations within the same table. The performance gain/loss
* depends on the system and memory details.
*
* This option is independent of \c MBEDTLS_AES_ROM_TABLES.
*
*/
//#define MBEDTLS_AES_FEWER_TABLES
/**
* \def MBEDTLS_CAMELLIA_SMALL_MEMORY
*
@ -582,6 +615,7 @@
#define MBEDTLS_ECP_DP_BP384R1_ENABLED
#define MBEDTLS_ECP_DP_BP512R1_ENABLED
#define MBEDTLS_ECP_DP_CURVE25519_ENABLED
#define MBEDTLS_ECP_DP_CURVE448_ENABLED
/**
* \def MBEDTLS_ECP_NIST_OPTIM
@ -1055,7 +1089,8 @@
/**
* \def MBEDTLS_RSA_NO_CRT
*
* Do not use the Chinese Remainder Theorem for the RSA private operation.
* Do not use the Chinese Remainder Theorem
* for the RSA private operation.
*
* Uncomment this macro to disable the use of CRT in RSA.
*
@ -1547,6 +1582,9 @@
*
* \note Currently compression can't be used with DTLS.
*
* \deprecated This feature is deprecated and will be removed
* in the next major revision of the library.
*
* Used in: library/ssl_tls.c
* library/ssl_cli.c
* library/ssl_srv.c
@ -2872,6 +2910,26 @@
*/
#define MBEDTLS_TLS_DEFAULT_ALLOW_SHA1_IN_KEY_EXCHANGE
/**
* Uncomment the macro to let mbed TLS use your alternate implementation of
* mbedtls_platform_zeroize(). This replaces the default implementation in
* platform_util.c.
*
* mbedtls_platform_zeroize() is a widely used function across the library to
* zero a block of memory. The implementation is expected to be secure in the
* sense that it has been written to prevent the compiler from removing calls
* to mbedtls_platform_zeroize() as part of redundant code elimination
* optimizations. However, it is difficult to guarantee that calls to
* mbedtls_platform_zeroize() will not be optimized by the compiler as older
* versions of the C language standards do not provide a secure implementation
* of memset(). Therefore, MBEDTLS_PLATFORM_ZEROIZE_ALT enables users to
* configure their own implementation of mbedtls_platform_zeroize(), for
* example by using directives specific to their compiler, features from newer
* C standards (e.g using memset_s() in C11) or calling a secure memset() from
* their system (e.g explicit_bzero() in BSD).
*/
//#define MBEDTLS_PLATFORM_ZEROIZE_ALT
/* \} name SECTION: Customisation configuration options */
/* Target and application specific configurations */

58
include/mbedtls/ctr_drbg.h
View file

@ -1,10 +1,15 @@
/**
* \file ctr_drbg.h
*
* \brief CTR_DRBG is based on AES-256, as defined in <em>NIST SP 800-90A:
* Recommendation for Random Number Generation Using Deterministic
* Random Bit Generators</em>.
* \brief This file contains CTR_DRBG definitions and functions.
*
* CTR_DRBG is a standardized way of building a PRNG from a block-cipher
* in counter mode operation, as defined in <em>NIST SP 800-90A:
* Recommendation for Random Number Generation Using Deterministic Random
* Bit Generators</em>.
*
* The Mbed TLS implementation of CTR_DRBG uses AES-256 as the underlying
* block cipher.
*/
/*
* Copyright (C) 2006-2018, Arm Limited (or its affiliates), All Rights Reserved
@ -156,8 +161,8 @@ void mbedtls_ctr_drbg_init( mbedtls_ctr_drbg_context *ctx );
identifiers. Can be NULL.
* \param len The length of the personalization data.
*
* \return \c 0 on success, or
* #MBEDTLS_ERR_CTR_DRBG_ENTROPY_SOURCE_FAILED on failure.
* \return \c 0 on success.
* \return #MBEDTLS_ERR_CTR_DRBG_ENTROPY_SOURCE_FAILED on failure.
*/
int mbedtls_ctr_drbg_seed( mbedtls_ctr_drbg_context *ctx,
int (*f_entropy)(void *, unsigned char *, size_t),
@ -216,22 +221,24 @@ void mbedtls_ctr_drbg_set_reseed_interval( mbedtls_ctr_drbg_context *ctx,
* \param additional Additional data to add to the state. Can be NULL.
* \param len The length of the additional data.
*
* \return \c 0 on success, or
* #MBEDTLS_ERR_CTR_DRBG_ENTROPY_SOURCE_FAILED on failure.
* \return \c 0 on success.
* \return #MBEDTLS_ERR_CTR_DRBG_ENTROPY_SOURCE_FAILED on failure.
*/
int mbedtls_ctr_drbg_reseed( mbedtls_ctr_drbg_context *ctx,
const unsigned char *additional, size_t len );
/**
* \brief This function updates the state of the CTR_DRBG context.
* \brief This function updates the state of the CTR_DRBG context.
*
* \param ctx The CTR_DRBG context.
* \param additional The data to update the state with.
* \param add_len Length of \p additional data.
* \note If \p add_len is greater than
* #MBEDTLS_CTR_DRBG_MAX_SEED_INPUT, only the first
* #MBEDTLS_CTR_DRBG_MAX_SEED_INPUT Bytes are used.
* The remaining Bytes are silently discarded.
*
* \param ctx The CTR_DRBG context.
* \param additional The data to update the state with.
* \param add_len Length of \p additional data.
*
* \note If \p add_len is greater than #MBEDTLS_CTR_DRBG_MAX_SEED_INPUT,
* only the first #MBEDTLS_CTR_DRBG_MAX_SEED_INPUT Bytes are used.
* The remaining Bytes are silently discarded.
*/
void mbedtls_ctr_drbg_update( mbedtls_ctr_drbg_context *ctx,
const unsigned char *additional, size_t add_len );
@ -249,8 +256,8 @@ void mbedtls_ctr_drbg_update( mbedtls_ctr_drbg_context *ctx,
* \param additional Additional data to update. Can be NULL.
* \param add_len The length of the additional data.
*
* \return \c 0 on success, or
* #MBEDTLS_ERR_CTR_DRBG_ENTROPY_SOURCE_FAILED or
* \return \c 0 on success.
* \return #MBEDTLS_ERR_CTR_DRBG_ENTROPY_SOURCE_FAILED or
* #MBEDTLS_ERR_CTR_DRBG_REQUEST_TOO_BIG on failure.
*/
int mbedtls_ctr_drbg_random_with_add( void *p_rng,
@ -267,8 +274,8 @@ int mbedtls_ctr_drbg_random_with_add( void *p_rng,
* \param output The buffer to fill.
* \param output_len The length of the buffer.
*
* \return \c 0 on success, or
* #MBEDTLS_ERR_CTR_DRBG_ENTROPY_SOURCE_FAILED or
* \return \c 0 on success.
* \return #MBEDTLS_ERR_CTR_DRBG_ENTROPY_SOURCE_FAILED or
* #MBEDTLS_ERR_CTR_DRBG_REQUEST_TOO_BIG on failure.
*/
int mbedtls_ctr_drbg_random( void *p_rng,
@ -281,9 +288,9 @@ int mbedtls_ctr_drbg_random( void *p_rng,
* \param ctx The CTR_DRBG context.
* \param path The name of the file.
*
* \return \c 0 on success,
* #MBEDTLS_ERR_CTR_DRBG_FILE_IO_ERROR on file error, or
* #MBEDTLS_ERR_CTR_DRBG_ENTROPY_SOURCE_FAILED on
* \return \c 0 on success.
* \return #MBEDTLS_ERR_CTR_DRBG_FILE_IO_ERROR on file error.
* \return #MBEDTLS_ERR_CTR_DRBG_ENTROPY_SOURCE_FAILED on
* failure.
*/
int mbedtls_ctr_drbg_write_seed_file( mbedtls_ctr_drbg_context *ctx, const char *path );
@ -295,9 +302,9 @@ int mbedtls_ctr_drbg_write_seed_file( mbedtls_ctr_drbg_context *ctx, const char
* \param ctx The CTR_DRBG context.
* \param path The name of the file.
*
* \return \c 0 on success,
* #MBEDTLS_ERR_CTR_DRBG_FILE_IO_ERROR on file error,
* #MBEDTLS_ERR_CTR_DRBG_ENTROPY_SOURCE_FAILED or
* \return \c 0 on success.
* \return #MBEDTLS_ERR_CTR_DRBG_FILE_IO_ERROR on file error.
* \return #MBEDTLS_ERR_CTR_DRBG_ENTROPY_SOURCE_FAILED or
* #MBEDTLS_ERR_CTR_DRBG_INPUT_TOO_BIG on failure.
*/
int mbedtls_ctr_drbg_update_seed_file( mbedtls_ctr_drbg_context *ctx, const char *path );
@ -306,7 +313,8 @@ int mbedtls_ctr_drbg_update_seed_file( mbedtls_ctr_drbg_context *ctx, const char
/**
* \brief The CTR_DRBG checkup routine.
*
* \return \c 0 on success, or \c 1 on failure.
* \return \c 0 on success.
* \return \c 1 on failure.
*/
int mbedtls_ctr_drbg_self_test( int verbose );

23
include/mbedtls/des.h
View file

@ -46,14 +46,14 @@
#define MBEDTLS_DES_KEY_SIZE 8
#if !defined(MBEDTLS_DES_ALT)
// Regular implementation
//
#ifdef __cplusplus
extern "C" {
#endif
#if !defined(MBEDTLS_DES_ALT)
// Regular implementation
//
/**
* \brief DES context structure
*
@ -76,6 +76,10 @@ typedef struct
}
mbedtls_des3_context;
#else /* MBEDTLS_DES_ALT */
#include "des_alt.h"
#endif /* MBEDTLS_DES_ALT */
/**
* \brief Initialize DES context
*
@ -331,17 +335,6 @@ int mbedtls_des3_crypt_cbc( mbedtls_des3_context *ctx,
*/
void mbedtls_des_setkey( uint32_t SK[32],
const unsigned char key[MBEDTLS_DES_KEY_SIZE] );
#ifdef __cplusplus
}
#endif
#else /* MBEDTLS_DES_ALT */
#include "des_alt.h"
#endif /* MBEDTLS_DES_ALT */
#ifdef __cplusplus
extern "C" {
#endif
/**
* \brief Checkup routine

130
include/mbedtls/dhm.h
View file

@ -1,7 +1,13 @@
/**
* \file dhm.h
*
* \brief Diffie-Hellman-Merkle key exchange.
* \brief This file contains Diffie-Hellman-Merkle (DHM) key exchange
* definitions and functions.
*
* Diffie-Hellman-Merkle (DHM) key exchange is defined in
* <em>RFC-2631: Diffie-Hellman Key Agreement Method</em> and
* <em>Public-Key Cryptography Standards (PKCS) #3: Diffie
* Hellman Key Agreement Standard</em>.
*
* <em>RFC-3526: More Modular Exponential (MODP) Diffie-Hellman groups for
* Internet Key Exchange (IKE)</em> defines a number of standardized
@ -65,7 +71,6 @@
#include MBEDTLS_CONFIG_FILE
#endif
#include "bignum.h"
#if !defined(MBEDTLS_DHM_ALT)
/*
* DHM Error codes
@ -86,6 +91,8 @@
extern "C" {
#endif
#if !defined(MBEDTLS_DHM_ALT)
/**
* \brief The DHM context structure.
*/
@ -105,6 +112,10 @@ typedef struct
}
mbedtls_dhm_context;
#else /* MBEDTLS_DHM_ALT */
#include "dhm_alt.h"
#endif /* MBEDTLS_DHM_ALT */
/**
* \brief This function initializes the DHM context.
*
@ -125,8 +136,8 @@ void mbedtls_dhm_init( mbedtls_dhm_context *ctx );
* failures.
* \param end The end of the input buffer.
*
* \return \c 0 on success, or an \c MBEDTLS_ERR_DHM_XXX error code
* on failure.
* \return \c 0 on success.
* \return An \c MBEDTLS_ERR_DHM_XXX error code on failure.
*/
int mbedtls_dhm_read_params( mbedtls_dhm_context *ctx,
unsigned char **p,
@ -136,13 +147,6 @@ int mbedtls_dhm_read_params( mbedtls_dhm_context *ctx,
* \brief This function sets up and writes the ServerKeyExchange
* parameters.
*
* \param ctx The DHM context.
* \param x_size The private value size in Bytes.
* \param olen The number of characters written.
* \param output The destination buffer.
* \param f_rng The RNG function.
* \param p_rng The RNG parameter.
*
* \note The destination buffer must be large enough to hold
* the reduced binary presentation of the modulus, the generator
* and the public key, each wrapped with a 2-byte length field.
@ -155,8 +159,15 @@ int mbedtls_dhm_read_params( mbedtls_dhm_context *ctx,
* mbedtls_dhm_set_group() below in conjunction with
* mbedtls_mpi_read_binary() and mbedtls_mpi_read_string().
*
* \return \c 0 on success, or an \c MBEDTLS_ERR_DHM_XXX error code
* on failure.
* \param ctx The DHM context.
* \param x_size The private key size in Bytes.
* \param olen The number of characters written.
* \param output The destination buffer.
* \param f_rng The RNG function.
* \param p_rng The RNG context.
*
* \return \c 0 on success.
* \return An \c MBEDTLS_ERR_DHM_XXX error code on failure.
*/
int mbedtls_dhm_make_params( mbedtls_dhm_context *ctx, int x_size,
unsigned char *output, size_t *olen,
@ -164,54 +175,54 @@ int mbedtls_dhm_make_params( mbedtls_dhm_context *ctx, int x_size,
void *p_rng );
/**
* \brief Set prime modulus and generator
* \brief This function sets the prime modulus and generator.
*
* \note This function can be used to set \p P, \p G
* in preparation for mbedtls_dhm_make_params().
*
* \param ctx The DHM context.
* \param P The MPI holding DHM prime modulus.
* \param G The MPI holding DHM generator.
* \param P The MPI holding the DHM prime modulus.
* \param G The MPI holding the DHM generator.
*
* \note This function can be used to set P, G
* in preparation for \c mbedtls_dhm_make_params.
*
* \return \c 0 if successful, or an \c MBEDTLS_ERR_DHM_XXX error code
* on failure.
* \return \c 0 if successful.
* \return An \c MBEDTLS_ERR_DHM_XXX error code on failure.
*/
int mbedtls_dhm_set_group( mbedtls_dhm_context *ctx,
const mbedtls_mpi *P,
const mbedtls_mpi *G );
/**
* \brief This function imports the public value G^Y of the peer.
* \brief This function imports the public value of the peer, G^Y.
*
* \param ctx The DHM context.
* \param input The input buffer.
* \param input The input buffer containing the G^Y value of the peer.
* \param ilen The size of the input buffer.
*
* \return \c 0 on success, or an \c MBEDTLS_ERR_DHM_XXX error code
* on failure.
* \return \c 0 on success.
* \return An \c MBEDTLS_ERR_DHM_XXX error code on failure.
*/
int mbedtls_dhm_read_public( mbedtls_dhm_context *ctx,
const unsigned char *input, size_t ilen );
/**
* \brief This function creates its own private value \c X and
* \brief This function creates its own private key, \c X, and
* exports \c G^X.
*
* \note The destination buffer is always fully written
* so as to contain a big-endian representation of G^X mod P.
* If it is larger than ctx->len, it is padded accordingly
* with zero-bytes at the beginning.
*
* \param ctx The DHM context.
* \param x_size The private value size in Bytes.
* \param x_size The private key size in Bytes.
* \param output The destination buffer.
* \param olen The length of the destination buffer. Must be at least
equal to ctx->len (the size of \c P).
* equal to ctx->len (the size of \c P).
* \param f_rng The RNG function.
* \param p_rng The RNG parameter.
* \param p_rng The RNG context.
*
* \note The destination buffer will always be fully written
* so as to contain a big-endian presentation of G^X mod P.
* If it is larger than ctx->len, it will accordingly be
* padded with zero-bytes in the beginning.
*
* \return \c 0 on success, or an \c MBEDTLS_ERR_DHM_XXX error code
* on failure.
* \return \c 0 on success.
* \return An \c MBEDTLS_ERR_DHM_XXX error code on failure.
*/
int mbedtls_dhm_make_public( mbedtls_dhm_context *ctx, int x_size,
unsigned char *output, size_t olen,
@ -222,22 +233,22 @@ int mbedtls_dhm_make_public( mbedtls_dhm_context *ctx, int x_size,
* \brief This function derives and exports the shared secret
* \c (G^Y)^X mod \c P.
*
* \note If \p f_rng is not NULL, it is used to blind the input as
* a countermeasure against timing attacks. Blinding is used
* only if our private key \c X is re-used, and not used
* otherwise. We recommend always passing a non-NULL
* \p f_rng argument.
*
* \param ctx The DHM context.
* \param output The destination buffer.
* \param output_size The size of the destination buffer. Must be at least
* the size of ctx->len.
* the size of ctx->len (the size of \c P).
* \param olen On exit, holds the actual number of Bytes written.
* \param f_rng The RNG function, for blinding purposes.
* \param p_rng The RNG parameter.
* \param p_rng The RNG context.
*
* \return \c 0 on success, or an \c MBEDTLS_ERR_DHM_XXX error code
* on failure.
*
* \note If non-NULL, \p f_rng is used to blind the input as
* a countermeasure against timing attacks. Blinding is used
* only if our secret value \p X is re-used and omitted
* otherwise. Therefore, we recommend always passing a
* non-NULL \p f_rng argument.
* \return \c 0 on success.
* \return An \c MBEDTLS_ERR_DHM_XXX error code on failure.
*/
int mbedtls_dhm_calc_secret( mbedtls_dhm_context *ctx,
unsigned char *output, size_t output_size, size_t *olen,
@ -245,7 +256,7 @@ int mbedtls_dhm_calc_secret( mbedtls_dhm_context *ctx,
void *p_rng );
/**
* \brief This function frees and clears the components of a DHM key.
* \brief This function frees and clears the components of a DHM context.
*
* \param ctx The DHM context to free and clear.
*/
@ -261,8 +272,9 @@ void mbedtls_dhm_free( mbedtls_dhm_context *ctx );
* \param dhminlen The size of the buffer, including the terminating null
* Byte for PEM data.
*
* \return \c 0 on success, or a specific DHM or PEM error code
* on failure.
* \return \c 0 on success.
* \return An \c MBEDTLS_ERR_DHM_XXX or \c MBEDTLS_ERR_PEM_XXX error code
* error code on failure.
*/
int mbedtls_dhm_parse_dhm( mbedtls_dhm_context *dhm, const unsigned char *dhmin,
size_t dhminlen );
@ -275,29 +287,19 @@ int mbedtls_dhm_parse_dhm( mbedtls_dhm_context *dhm, const unsigned char *dhmin,
* \param dhm The DHM context to load the parameters to.
* \param path The filename to read the DHM parameters from.
*
* \return \c 0 on success, or a specific DHM or PEM error code
* on failure.
* \return \c 0 on success.
* \return An \c MBEDTLS_ERR_DHM_XXX or \c MBEDTLS_ERR_PEM_XXX error code
* error code on failure.
*/
int mbedtls_dhm_parse_dhmfile( mbedtls_dhm_context *dhm, const char *path );
#endif /* MBEDTLS_FS_IO */
#endif /* MBEDTLS_ASN1_PARSE_C */
#ifdef __cplusplus
}
#endif
#else /* MBEDTLS_DHM_ALT */
#include "dhm_alt.h"
#endif /* MBEDTLS_DHM_ALT */
#ifdef __cplusplus
extern "C" {
#endif
/**
* \brief The DMH checkup routine.
*
* \return \c 0 on success, or \c 1 on failure.
* \return \c 0 on success.
* \return \c 1 on failure.
*/
int mbedtls_dhm_self_test( int verbose );

113
include/mbedtls/ecdh.h
View file

@ -1,10 +1,11 @@
/**
* \file ecdh.h
*
* \brief The Elliptic Curve Diffie-Hellman (ECDH) protocol APIs.
* \brief This file contains ECDH definitions and functions.
*
* ECDH is an anonymous key agreement protocol allowing two parties to
* establish a shared secret over an insecure channel. Each party must have an
* The Elliptic Curve Diffie-Hellman (ECDH) protocol is an anonymous
* key agreement protocol allowing two parties to establish a shared
* secret over an insecure channel. Each party must have an
* elliptic-curve public–private key pair.
*
* For more information, see <em>NIST SP 800-56A Rev. 2: Recommendation for
@ -40,14 +41,12 @@ extern "C" {
#endif
/**
* Defines the source of the imported EC key:
* <ul><li>Our key.</li>
* <li>The key of the peer.</li></ul>
* Defines the source of the imported EC key.
*/
typedef enum
{
MBEDTLS_ECDH_OURS,
MBEDTLS_ECDH_THEIRS,
MBEDTLS_ECDH_OURS, /**< Our key. */
MBEDTLS_ECDH_THEIRS, /**< The key of the peer. */
} mbedtls_ecdh_side;
/**
@ -75,16 +74,18 @@ mbedtls_ecdh_context;
* implemented during the ECDH key exchange. The second core
* computation is performed by mbedtls_ecdh_compute_shared().
*
* \see ecp.h
*
* \param grp The ECP group.
* \param d The destination MPI (private key).
* \param Q The destination point (public key).
* \param f_rng The RNG function.
* \param p_rng The RNG parameter.
* \param p_rng The RNG context.
*
* \return \c 0 on success, or an \c MBEDTLS_ERR_ECP_XXX or
* \return \c 0 on success.
* \return An \c MBEDTLS_ERR_ECP_XXX or
* \c MBEDTLS_MPI_XXX error code on failure.
*
* \see ecp.h
*/
int mbedtls_ecdh_gen_public( mbedtls_ecp_group *grp, mbedtls_mpi *d, mbedtls_ecp_point *Q,
int (*f_rng)(void *, unsigned char *, size_t),
@ -97,21 +98,22 @@ int mbedtls_ecdh_gen_public( mbedtls_ecp_group *grp, mbedtls_mpi *d, mbedtls_ecp
* implemented during the ECDH key exchange. The first core
* computation is performed by mbedtls_ecdh_gen_public().
*
* \see ecp.h
*
* \note If \p f_rng is not NULL, it is used to implement
* countermeasures against side-channel attacks.
* For more information, see mbedtls_ecp_mul().
*
* \param grp The ECP group.
* \param z The destination MPI (shared secret).
* \param Q The public key from another party.
* \param d Our secret exponent (private key).
* \param f_rng The RNG function.
* \param p_rng The RNG parameter.
* \param p_rng The RNG context.
*
* \return \c 0 on success, or an \c MBEDTLS_ERR_ECP_XXX or
* \return \c 0 on success.
* \return An \c MBEDTLS_ERR_ECP_XXX or
* \c MBEDTLS_MPI_XXX error code on failure.
*
* \see ecp.h
*
* \note If \p f_rng is not NULL, it is used to implement
* countermeasures against potential elaborate timing
* attacks. For more information, see mbedtls_ecp_mul().
*/
int mbedtls_ecdh_compute_shared( mbedtls_ecp_group *grp, mbedtls_mpi *z,
const mbedtls_ecp_point *Q, const mbedtls_mpi *d,
@ -139,21 +141,21 @@ void mbedtls_ecdh_free( mbedtls_ecdh_context *ctx );
* This is the first function used by a TLS server for ECDHE
* ciphersuites.
*
* \note This function assumes that the ECP group (grp) of the
* \p ctx context has already been properly set,
* for example, using mbedtls_ecp_group_load().
*
* \see ecp.h
*
* \param ctx The ECDH context.
* \param olen The number of characters written.
* \param buf The destination buffer.
* \param blen The length of the destination buffer.
* \param f_rng The RNG function.
* \param p_rng The RNG parameter.
* \param p_rng The RNG context.
*
* \note This function assumes that the ECP group (grp) of the
* \p ctx context has already been properly set,
* for example, using mbedtls_ecp_group_load().
*
* \return \c 0 on success, or an \c MBEDTLS_ERR_ECP_XXX error code
* on failure.
*
* \see ecp.h
* \return \c 0 on success.
* \return An \c MBEDTLS_ERR_ECP_XXX error code on failure.
*/
int mbedtls_ecdh_make_params( mbedtls_ecdh_context *ctx, size_t *olen,
unsigned char *buf, size_t blen,
@ -167,14 +169,15 @@ int mbedtls_ecdh_make_params( mbedtls_ecdh_context *ctx, size_t *olen,
* This is the first function used by a TLS client for ECDHE
* ciphersuites.
*
* \see ecp.h
*
* \param ctx The ECDH context.
* \param buf The pointer to the start of the input buffer.
* \param end The address for one Byte past the end of the buffer.
*
* \return \c 0 on success, or an \c MBEDTLS_ERR_ECP_XXX error code
* on failure.
* \return \c 0 on success.
* \return An \c MBEDTLS_ERR_ECP_XXX error code on failure.
*
* \see ecp.h
*/
int mbedtls_ecdh_read_params( mbedtls_ecdh_context *ctx,
const unsigned char **buf, const unsigned char *end );
@ -186,16 +189,16 @@ int mbedtls_ecdh_read_params( mbedtls_ecdh_context *ctx,
* ServerKeyEchange for static ECDH, and imports ECDH
* parameters from the EC key information of a certificate.
*
* \see ecp.h
*
* \param ctx The ECDH context to set up.
* \param key The EC key to use.
* \param side Defines the source of the key:
* <ul><li>1: Our key.</li>
<li>0: The key of the peer.</li></ul>
* \param side Defines the source of the key: 1: Our key, or
* 0: The key of the peer.
*
* \return \c 0 on success, or an \c MBEDTLS_ERR_ECP_XXX error code
* on failure.
* \return \c 0 on success.
* \return An \c MBEDTLS_ERR_ECP_XXX error code on failure.
*
* \see ecp.h
*/
int mbedtls_ecdh_get_params( mbedtls_ecdh_context *ctx, const mbedtls_ecp_keypair *key,
mbedtls_ecdh_side side );
@ -207,17 +210,17 @@ int mbedtls_ecdh_get_params( mbedtls_ecdh_context *ctx, const mbedtls_ecp_keypai
* This is the second function used by a TLS client for ECDH(E)
* ciphersuites.
*
* \see ecp.h
*
* \param ctx The ECDH context.
* \param olen The number of Bytes written.
* \param buf The destination buffer.
* \param blen The size of the destination buffer.
* \param f_rng The RNG function.
* \param p_rng The RNG parameter.
* \param p_rng The RNG context.
*
* \return \c 0 on success, or an \c MBEDTLS_ERR_ECP_XXX error code
* on failure.
*
* \see ecp.h
* \return \c 0 on success.
* \return An \c MBEDTLS_ERR_ECP_XXX error code on failure.
*/
int mbedtls_ecdh_make_public( mbedtls_ecdh_context *ctx, size_t *olen,
unsigned char *buf, size_t blen,
@ -231,14 +234,14 @@ int mbedtls_ecdh_make_public( mbedtls_ecdh_context *ctx, size_t *olen,
* This is the second function used by a TLS server for ECDH(E)
* ciphersuites.
*
* \see ecp.h
*
* \param ctx The ECDH context.
* \param buf The start of the input buffer.
* \param blen The length of the input buffer.
*
* \return \c 0 on success, or an \c MBEDTLS_ERR_ECP_XXX error code
* on failure.
*
* \see ecp.h
* \return \c 0 on success.
* \return An \c MBEDTLS_ERR_ECP_XXX error code on failure.
*/
int mbedtls_ecdh_read_public( mbedtls_ecdh_context *ctx,
const unsigned char *buf, size_t blen );
@ -249,21 +252,21 @@ int mbedtls_ecdh_read_public( mbedtls_ecdh_context *ctx,
* This is the last function used by both TLS client
* and servers.
*
* \note If \p f_rng is not NULL, it is used to implement
* countermeasures against side-channel attacks.
* For more information, see mbedtls_ecp_mul().
*
* \see ecp.h
*
* \param ctx The ECDH context.
* \param olen The number of Bytes written.
* \param buf The destination buffer.
* \param blen The length of the destination buffer.
* \param f_rng The RNG function.
* \param p_rng The RNG parameter.
* \param p_rng The RNG context.
*
* \return \c 0 on success, or an \c MBEDTLS_ERR_ECP_XXX error code
* on failure.
*
* \see ecp.h
*
* \note If \p f_rng is not NULL, it is used to implement
* countermeasures against potential elaborate timing
* attacks. For more information, see mbedtls_ecp_mul().
* \return \c 0 on success.
* \return An \c MBEDTLS_ERR_ECP_XXX error code on failure.
*/
int mbedtls_ecdh_calc_secret( mbedtls_ecdh_context *ctx, size_t *olen,
unsigned char *buf, size_t blen,

181
include/mbedtls/ecdsa.h
View file

@ -1,9 +1,10 @@
/**
* \file ecdsa.h
*
* \brief The Elliptic Curve Digital Signature Algorithm (ECDSA).
* \brief This file contains ECDSA definitions and functions.
*
* ECDSA is defined in <em>Standards for Efficient Cryptography Group (SECG):
* The Elliptic Curve Digital Signature Algorithm (ECDSA) is defined in
* <em>Standards for Efficient Cryptography Group (SECG):
* SEC1 Elliptic Curve Cryptography</em>.
* The use of ECDSA for TLS is defined in <em>RFC-4492: Elliptic Curve
* Cryptography (ECC) Cipher Suites for Transport Layer Security (TLS)</em>.
@ -69,6 +70,14 @@ extern "C" {
*
* \note The deterministic version is usually preferred.
*
* \note If the bitlength of the message hash is larger than the
* bitlength of the group order, then the hash is truncated
* as defined in <em>Standards for Efficient Cryptography Group
* (SECG): SEC1 Elliptic Curve Cryptography</em>, section
* 4.1.3, step 5.
*
* \see ecp.h
*
* \param grp The ECP group.
* \param r The first output integer.
* \param s The second output integer.
@ -76,18 +85,11 @@ extern "C" {
* \param buf The message hash.
* \param blen The length of \p buf.
* \param f_rng The RNG function.
* \param p_rng The RNG parameter.
* \param p_rng The RNG context.
*
* \note If the bitlength of the message hash is larger than the
* bitlength of the group order, then the hash is truncated
* as defined in <em>Standards for Efficient Cryptography Group
* (SECG): SEC1 Elliptic Curve Cryptography</em>, section
* 4.1.3, step 5.
*
* \return \c 0 on success, or an \c MBEDTLS_ERR_ECP_XXX
* \return \c 0 on success.
* \return An \c MBEDTLS_ERR_ECP_XXX
* or \c MBEDTLS_MPI_XXX error code on failure.
*
* \see ecp.h
*/
int mbedtls_ecdsa_sign( mbedtls_ecp_group *grp, mbedtls_mpi *r, mbedtls_mpi *s,
const mbedtls_mpi *d, const unsigned char *buf, size_t blen,
@ -97,10 +99,19 @@ int mbedtls_ecdsa_sign( mbedtls_ecp_group *grp, mbedtls_mpi *r, mbedtls_mpi *s,
/**
* \brief This function computes the ECDSA signature of a
* previously-hashed message, deterministic version.
*
* For more information, see <em>RFC-6979: Deterministic
* Usage of the Digital Signature Algorithm (DSA) and Elliptic
* Curve Digital Signature Algorithm (ECDSA)</em>.
*
* \note If the bitlength of the message hash is larger than the
* bitlength of the group order, then the hash is truncated as
* defined in <em>Standards for Efficient Cryptography Group
* (SECG): SEC1 Elliptic Curve Cryptography</em>, section
* 4.1.3, step 5.
*
* \see ecp.h
*
* \param grp The ECP group.
* \param r The first output integer.
* \param s The second output integer.
@ -109,17 +120,9 @@ int mbedtls_ecdsa_sign( mbedtls_ecp_group *grp, mbedtls_mpi *r, mbedtls_mpi *s,
* \param blen The length of \p buf.
* \param md_alg The MD algorithm used to hash the message.
*
* \note If the bitlength of the message hash is larger than the
* bitlength of the group order, then the hash is truncated as
* defined in <em>Standards for Efficient Cryptography Group
* (SECG): SEC1 Elliptic Curve Cryptography</em>, section
* 4.1.3, step 5.
*
* \return \c 0 on success,
* or an \c MBEDTLS_ERR_ECP_XXX or \c MBEDTLS_MPI_XXX
* \return \c 0 on success.
* \return An \c MBEDTLS_ERR_ECP_XXX or \c MBEDTLS_MPI_XXX
* error code on failure.
*
* \see ecp.h
*/
int mbedtls_ecdsa_sign_det( mbedtls_ecp_group *grp, mbedtls_mpi *r, mbedtls_mpi *s,
const mbedtls_mpi *d, const unsigned char *buf, size_t blen,
@ -130,6 +133,14 @@ int mbedtls_ecdsa_sign_det( mbedtls_ecp_group *grp, mbedtls_mpi *r, mbedtls_mpi
* \brief This function verifies the ECDSA signature of a
* previously-hashed message.
*
* \note If the bitlength of the message hash is larger than the
* bitlength of the group order, then the hash is truncated as
* defined in <em>Standards for Efficient Cryptography Group
* (SECG): SEC1 Elliptic Curve Cryptography</em>, section
* 4.1.4, step 3.
*
* \see ecp.h
*
* \param grp The ECP group.
* \param buf The message hash.
* \param blen The length of \p buf.
@ -137,18 +148,11 @@ int mbedtls_ecdsa_sign_det( mbedtls_ecp_group *grp, mbedtls_mpi *r, mbedtls_mpi
* \param r The first integer of the signature.
* \param s The second integer of the signature.
*
* \note If the bitlength of the message hash is larger than the
* bitlength of the group order, then the hash is truncated as
* defined in <em>Standards for Efficient Cryptography Group
* (SECG): SEC1 Elliptic Curve Cryptography</em>, section
* 4.1.4, step 3.
*
* \return \c 0 on success,
* #MBEDTLS_ERR_ECP_BAD_INPUT_DATA if signature is invalid,
* or an \c MBEDTLS_ERR_ECP_XXX or \c MBEDTLS_MPI_XXX
* \return \c 0 on success.
* \return #MBEDTLS_ERR_ECP_BAD_INPUT_DATA if the signature
* is invalid.
* \return An \c MBEDTLS_ERR_ECP_XXX or \c MBEDTLS_MPI_XXX
* error code on failure for any other reason.
*
* \see ecp.h
*/
int mbedtls_ecdsa_verify( mbedtls_ecp_group *grp,
const unsigned char *buf, size_t blen,
@ -169,15 +173,6 @@ int mbedtls_ecdsa_verify( mbedtls_ecp_group *grp,
* of the Digital Signature Algorithm (DSA) and Elliptic
* Curve Digital Signature Algorithm (ECDSA)</em>.
*
* \param ctx The ECDSA context.
* \param md_alg The message digest that was used to hash the message.
* \param hash The message hash.
* \param hlen The length of the hash.
* \param sig The buffer that holds the signature.
* \param slen The length of the signature written.
* \param f_rng The RNG function.
* \param p_rng The RNG parameter.
*
* \note The \p sig buffer must be at least twice as large as the
* size of the curve used, plus 9. For example, 73 Bytes if
* a 256-bit curve is used. A buffer length of
@ -189,11 +184,20 @@ int mbedtls_ecdsa_verify( mbedtls_ecp_group *grp,
* (SECG): SEC1 Elliptic Curve Cryptography</em>, section
* 4.1.3, step 5.
*
* \return \c 0 on success,
* or an \c MBEDTLS_ERR_ECP_XXX, \c MBEDTLS_ERR_MPI_XXX or
* \c MBEDTLS_ERR_ASN1_XXX error code on failure.
*
* \see ecp.h
*
* \param ctx The ECDSA context.
* \param md_alg The message digest that was used to hash the message.
* \param hash The message hash.
* \param hlen The length of the hash.
* \param sig The buffer that holds the signature.
* \param slen The length of the signature written.
* \param f_rng The RNG function.
* \param p_rng The RNG context.
*
* \return \c 0 on success.
* \return An \c MBEDTLS_ERR_ECP_XXX, \c MBEDTLS_ERR_MPI_XXX or
* \c MBEDTLS_ERR_ASN1_XXX error code on failure.
*/
int mbedtls_ecdsa_write_signature( mbedtls_ecdsa_context *ctx, mbedtls_md_type_t md_alg,
const unsigned char *hash, size_t hlen,
@ -209,26 +213,17 @@ int mbedtls_ecdsa_write_signature( mbedtls_ecdsa_context *ctx, mbedtls_md_type_t
#define MBEDTLS_DEPRECATED
#endif
/**
* \brief This function computes an ECDSA signature and writes it to a buffer,
* serialized as defined in <em>RFC-4492: Elliptic Curve Cryptography
* (ECC) Cipher Suites for Transport Layer Security (TLS)</em>.
* \brief This function computes an ECDSA signature and writes
* it to a buffer, serialized as defined in <em>RFC-4492:
* Elliptic Curve Cryptography (ECC) Cipher Suites for
* Transport Layer Security (TLS)</em>.
*
* The deterministic version is defined in <em>RFC-6979:
* Deterministic Usage of the Digital Signature Algorithm (DSA) and
* Elliptic Curve Digital Signature Algorithm (ECDSA)</em>.
* The deterministic version is defined in <em>RFC-6979:
* Deterministic Usage of the Digital Signature Algorithm (DSA)
* and Elliptic Curve Digital Signature Algorithm (ECDSA)</em>.
*
* \warning It is not thread-safe to use the same context in
* multiple threads.
*
* \deprecated Superseded by mbedtls_ecdsa_write_signature() in 2.0.0
*
* \param ctx The ECDSA context.
* \param hash The Message hash.
* \param hlen The length of the hash.
* \param sig The buffer that holds the signature.
* \param slen The length of the signature written.
* \param md_alg The MD algorithm used to hash the message.
*
* \note The \p sig buffer must be at least twice as large as the
* size of the curve used, plus 9. For example, 73 Bytes if a
@ -241,11 +236,21 @@ int mbedtls_ecdsa_write_signature( mbedtls_ecdsa_context *ctx, mbedtls_md_type_t
* (SECG): SEC1 Elliptic Curve Cryptography</em>, section
* 4.1.3, step 5.
*
* \return \c 0 on success,
* or an \c MBEDTLS_ERR_ECP_XXX, \c MBEDTLS_ERR_MPI_XXX or
* \c MBEDTLS_ERR_ASN1_XXX error code on failure.
*
* \see ecp.h
*
* \deprecated Superseded by mbedtls_ecdsa_write_signature() in
* Mbed TLS version 2.0 and later.
*
* \param ctx The ECDSA context.
* \param hash The message hash.
* \param hlen The length of the hash.
* \param sig The buffer that holds the signature.
* \param slen The length of the signature written.
* \param md_alg The MD algorithm used to hash the message.
*
* \return \c 0 on success.
* \return An \c MBEDTLS_ERR_ECP_XXX, \c MBEDTLS_ERR_MPI_XXX or
* \c MBEDTLS_ERR_ASN1_XXX error code on failure.
*/
int mbedtls_ecdsa_write_signature_det( mbedtls_ecdsa_context *ctx,
const unsigned char *hash, size_t hlen,
@ -258,26 +263,26 @@ int mbedtls_ecdsa_write_signature_det( mbedtls_ecdsa_context *ctx,
/**
* \brief This function reads and verifies an ECDSA signature.
*
* \param ctx The ECDSA context.
* \param hash The message hash.
* \param hlen The size of the hash.
* \param sig The signature to read and verify.
* \param slen The size of \p sig.
*
* \note If the bitlength of the message hash is larger than the
* bitlength of the group order, then the hash is truncated as
* defined in <em>Standards for Efficient Cryptography Group
* (SECG): SEC1 Elliptic Curve Cryptography</em>, section
* 4.1.4, step 3.
*
* \return \c 0 on success,
* #MBEDTLS_ERR_ECP_BAD_INPUT_DATA if signature is invalid,
* #MBEDTLS_ERR_ECP_SIG_LEN_MISMATCH if the signature is
* valid but its actual length is less than \p siglen,
* or an \c MBEDTLS_ERR_ECP_XXX or \c MBEDTLS_ERR_MPI_XXX
* error code on failure for any other reason.
*
* \see ecp.h
*
* \param ctx The ECDSA context.
* \param hash The message hash.
* \param hlen The size of the hash.
* \param sig The signature to read and verify.
* \param slen The size of \p sig.
*
* \return \c 0 on success.
* \return #MBEDTLS_ERR_ECP_BAD_INPUT_DATA if signature is invalid.
* \return #MBEDTLS_ERR_ECP_SIG_LEN_MISMATCH if there is a valid
* signature in \p sig, but its length is less than \p siglen.
* \return An \c MBEDTLS_ERR_ECP_XXX or \c MBEDTLS_ERR_MPI_XXX
* error code on failure for any other reason.
*/
int mbedtls_ecdsa_read_signature( mbedtls_ecdsa_context *ctx,
const unsigned char *hash, size_t hlen,
@ -286,16 +291,16 @@ int mbedtls_ecdsa_read_signature( mbedtls_ecdsa_context *ctx,
/**
* \brief This function generates an ECDSA keypair on the given curve.
*
* \see ecp.h
*
* \param ctx The ECDSA context to store the keypair in.
* \param gid The elliptic curve to use. One of the various
* \c MBEDTLS_ECP_DP_XXX macros depending on configuration.
* \param f_rng The RNG function.
* \param p_rng The RNG parameter.
* \param p_rng The RNG context.
*
* \return \c 0 on success, or an \c MBEDTLS_ERR_ECP_XXX code on
* failure.
*
* \see ecp.h
* \return \c 0 on success.
* \return An \c MBEDTLS_ERR_ECP_XXX code on failure.
*/
int mbedtls_ecdsa_genkey( mbedtls_ecdsa_context *ctx, mbedtls_ecp_group_id gid,
int (*f_rng)(void *, unsigned char *, size_t), void *p_rng );
@ -303,13 +308,13 @@ int mbedtls_ecdsa_genkey( mbedtls_ecdsa_context *ctx, mbedtls_ecp_group_id gid,
/**
* \brief This function sets an ECDSA context from an EC key pair.
*
* \see ecp.h
*
* \param ctx The ECDSA context to set.
* \param key The EC key to use.
*
* \return \c 0 on success, or an \c MBEDTLS_ERR_ECP_XXX code on
* failure.
*
* \see ecp.h
* \return \c 0 on success.
* \return An \c MBEDTLS_ERR_ECP_XXX code on failure.
*/
int mbedtls_ecdsa_from_keypair( mbedtls_ecdsa_context *ctx, const mbedtls_ecp_keypair *key );

20
include/mbedtls/ecjpake.h
View file

@ -44,8 +44,6 @@
#include "ecp.h"
#include "md.h"
#if !defined(MBEDTLS_ECJPAKE_ALT)
#ifdef __cplusplus
extern "C" {
#endif
@ -58,6 +56,7 @@ typedef enum {
MBEDTLS_ECJPAKE_SERVER, /**< Server */
} mbedtls_ecjpake_role;
#if !defined(MBEDTLS_ECJPAKE_ALT)
/**
* EC J-PAKE context structure.
*
@ -88,6 +87,10 @@ typedef struct
mbedtls_mpi s; /**< Pre-shared secret (passphrase) */
} mbedtls_ecjpake_context;
#else /* MBEDTLS_ECJPAKE_ALT */
#include "ecjpake_alt.h"
#endif /* MBEDTLS_ECJPAKE_ALT */
/**
* \brief Initialize a context
* (just makes it ready for setup() or free()).
@ -225,20 +228,10 @@ int mbedtls_ecjpake_derive_secret( mbedtls_ecjpake_context *ctx,
*/
void mbedtls_ecjpake_free( mbedtls_ecjpake_context *ctx );
#ifdef __cplusplus
}
#endif
#else /* MBEDTLS_ECJPAKE_ALT */
#include "ecjpake_alt.h"
#endif /* MBEDTLS_ECJPAKE_ALT */
#if defined(MBEDTLS_SELF_TEST)
#ifdef __cplusplus
extern "C" {
#endif
/**
* \brief Checkup routine
*
@ -246,10 +239,11 @@ extern "C" {
*/
int mbedtls_ecjpake_self_test( int verbose );
#endif /* MBEDTLS_SELF_TEST */
#ifdef __cplusplus
}
#endif
#endif /* MBEDTLS_SELF_TEST */
#endif /* ecjpake.h */

764
include/mbedtls/ecp.h
View file

File diff suppressed because it is too large Load diff

2
include/mbedtls/ecp_internal.h
View file

@ -48,7 +48,7 @@
* [6] Digital Signature Standard (DSS), FIPS 186-4.
* <http://nvlpubs.nist.gov/nistpubs/FIPS/NIST.FIPS.186-4.pdf>
*
* [7] Elliptic Curve Cryptography (ECC) Cipher Suites for Transport Layer
* [7] Elliptic Curve Cryptography (ECC) Cipher Suites for Transport Layer
* Security (TLS), RFC 4492.
* <https://tools.ietf.org/search/rfc4492>
*

2
include/mbedtls/entropy.h
View file

@ -166,7 +166,7 @@ void mbedtls_entropy_free( mbedtls_entropy_context *ctx );
* \param threshold Minimum required from source before entropy is released
* ( with mbedtls_entropy_func() ) (in bytes)
* \param strong MBEDTLS_ENTROPY_SOURCE_STRONG or
* MBEDTSL_ENTROPY_SOURCE_WEAK.
* MBEDTLS_ENTROPY_SOURCE_WEAK.
* At least one strong source needs to be added.
* Weaker sources (such as the cycle counter) can be used as
* a complement.

81
include/mbedtls/gcm.h
View file

@ -1,9 +1,11 @@
/**
* \file gcm.h
*
* \brief Galois/Counter Mode (GCM) for 128-bit block ciphers, as defined
* in <em>D. McGrew, J. Viega, The Galois/Counter Mode of Operation
* (GCM), Natl. Inst. Stand. Technol.</em>
* \brief This file contains GCM definitions and functions.
*
* The Galois/Counter Mode (GCM) for 128-bit block ciphers is defined
* in <em>D. McGrew, J. Viega, The Galois/Counter Mode of Operation
* (GCM), Natl. Inst. Stand. Technol.</em>
*
* For more information on GCM, see <em>NIST SP 800-38D: Recommendation for
* Block Cipher Modes of Operation: Galois/Counter Mode (GCM) and GMAC</em>.
@ -42,12 +44,12 @@
#define MBEDTLS_ERR_GCM_HW_ACCEL_FAILED -0x0013 /**< GCM hardware accelerator failed. */
#define MBEDTLS_ERR_GCM_BAD_INPUT -0x0014 /**< Bad input parameters to function. */
#if !defined(MBEDTLS_GCM_ALT)
#ifdef __cplusplus
extern "C" {
#endif
#if !defined(MBEDTLS_GCM_ALT)
/**
* \brief The GCM context structure.
*/
@ -66,6 +68,10 @@ typedef struct {
}
mbedtls_gcm_context;
#else /* !MBEDTLS_GCM_ALT */
#include "gcm_alt.h"
#endif /* !MBEDTLS_GCM_ALT */
/**
* \brief This function initializes the specified GCM context,
* to make references valid, and prepares the context
@ -91,7 +97,8 @@ void mbedtls_gcm_init( mbedtls_gcm_context *ctx );
* <li>192 bits</li>
* <li>256 bits</li></ul>
*
* \return \c 0 on success, or a cipher specific error code.
* \return \c 0 on success.
* \return A cipher-specific error code on failure.
*/
int mbedtls_gcm_setkey( mbedtls_gcm_context *ctx,
mbedtls_cipher_id_t cipher,
@ -101,15 +108,16 @@ int mbedtls_gcm_setkey( mbedtls_gcm_context *ctx,
/**
* \brief This function performs GCM encryption or decryption of a buffer.
*
* \note For encryption, the output buffer can be the same as the input buffer.
* For decryption, the output buffer cannot be the same as input buffer.
* If the buffers overlap, the output buffer must trail at least 8 Bytes
* behind the input buffer.
* \note For encryption, the output buffer can be the same as the
* input buffer. For decryption, the output buffer cannot be
* the same as input buffer. If the buffers overlap, the output
* buffer must trail at least 8 Bytes behind the input buffer.
*
* \param ctx The GCM context to use for encryption or decryption.
* \param mode The operation to perform: #MBEDTLS_GCM_ENCRYPT or
* #MBEDTLS_GCM_DECRYPT.
* \param length The length of the input data. This must be a multiple of 16 except in the last call before mbedtls_gcm_finish().
* \param length The length of the input data. This must be a multiple of
* 16 except in the last call before mbedtls_gcm_finish().
* \param iv The initialization vector.
* \param iv_len The length of the IV.
* \param add The buffer holding the additional data.
@ -137,12 +145,13 @@ int mbedtls_gcm_crypt_and_tag( mbedtls_gcm_context *ctx,
* \brief This function performs a GCM authenticated decryption of a
* buffer.
*
* \note For decryption, the output buffer cannot be the same as input buffer.
* If the buffers overlap, the output buffer must trail at least 8 Bytes
* behind the input buffer.
* \note For decryption, the output buffer cannot be the same as
* input buffer. If the buffers overlap, the output buffer
* must trail at least 8 Bytes behind the input buffer.
*
* \param ctx The GCM context.
* \param length The length of the input data. This must be a multiple of 16 except in the last call before mbedtls_gcm_finish().
* \param length The length of the input data. This must be a multiple
* of 16 except in the last call before mbedtls_gcm_finish().
* \param iv The initialization vector.
* \param iv_len The length of the IV.
* \param add The buffer holding the additional data.
@ -152,8 +161,8 @@ int mbedtls_gcm_crypt_and_tag( mbedtls_gcm_context *ctx,
* \param input The buffer holding the input data.
* \param output The buffer for holding the output data.
*
* \return 0 if successful and authenticated, or
* #MBEDTLS_ERR_GCM_AUTH_FAILED if tag does not match.
* \return 0 if successful and authenticated.
* \return #MBEDTLS_ERR_GCM_AUTH_FAILED if the tag does not match.
*/
int mbedtls_gcm_auth_decrypt( mbedtls_gcm_context *ctx,
size_t length,
@ -175,10 +184,12 @@ int mbedtls_gcm_auth_decrypt( mbedtls_gcm_context *ctx,
* #MBEDTLS_GCM_DECRYPT.
* \param iv The initialization vector.
* \param iv_len The length of the IV.
* \param add The buffer holding the additional data, or NULL if \p add_len is 0.
* \param add_len The length of the additional data. If 0, \p add is NULL.
* \param add The buffer holding the additional data, or NULL
* if \p add_len is 0.
* \param add_len The length of the additional data. If 0,
* \p add is NULL.
*
* \return \c 0 on success.
* \return \c 0 on success.
*/
int mbedtls_gcm_starts( mbedtls_gcm_context *ctx,
int mode,
@ -195,16 +206,18 @@ int mbedtls_gcm_starts( mbedtls_gcm_context *ctx,
* Bytes. Only the last call before calling
* mbedtls_gcm_finish() can be less than 16 Bytes.
*
* \note For decryption, the output buffer cannot be the same as input buffer.
* If the buffers overlap, the output buffer must trail at least 8 Bytes
* behind the input buffer.
* \note For decryption, the output buffer cannot be the same as
* input buffer. If the buffers overlap, the output buffer
* must trail at least 8 Bytes behind the input buffer.
*
* \param ctx The GCM context.
* \param length The length of the input data. This must be a multiple of 16 except in the last call before mbedtls_gcm_finish().
* \param length The length of the input data. This must be a multiple of
* 16 except in the last call before mbedtls_gcm_finish().
* \param input The buffer holding the input data.
* \param output The buffer for holding the output data.
*
* \return \c 0 on success, or #MBEDTLS_ERR_GCM_BAD_INPUT on failure.
* \return \c 0 on success.
* \return #MBEDTLS_ERR_GCM_BAD_INPUT on failure.
*/
int mbedtls_gcm_update( mbedtls_gcm_context *ctx,
size_t length,
@ -222,7 +235,8 @@ int mbedtls_gcm_update( mbedtls_gcm_context *ctx,
* \param tag The buffer for holding the tag.
* \param tag_len The length of the tag to generate. Must be at least four.
*
* \return \c 0 on success, or #MBEDTLS_ERR_GCM_BAD_INPUT on failure.
* \return \c 0 on success.
* \return #MBEDTLS_ERR_GCM_BAD_INPUT on failure.
*/
int mbedtls_gcm_finish( mbedtls_gcm_context *ctx,
unsigned char *tag,
@ -236,22 +250,11 @@ int mbedtls_gcm_finish( mbedtls_gcm_context *ctx,
*/
void mbedtls_gcm_free( mbedtls_gcm_context *ctx );
#ifdef __cplusplus
}
#endif
#else /* !MBEDTLS_GCM_ALT */
#include "gcm_alt.h"
#endif /* !MBEDTLS_GCM_ALT */
#ifdef __cplusplus
extern "C" {
#endif
/**
* \brief The GCM checkup routine.
*
* \return \c 0 on success, or \c 1 on failure.
* \return \c 0 on success.
* \return \c 1 on failure.
*/
int mbedtls_gcm_self_test( int verbose );

106
include/mbedtls/md.h
View file

@ -1,7 +1,7 @@
/**
* \file md.h
*
* \brief The generic message-digest wrapper.
* \brief This file contains the generic message-digest wrapper.
*
* \author Adriaan de Jong <dejong@fox-it.com>
*/
@ -46,7 +46,7 @@ extern "C" {
#endif
/**
* \brief Enumeration of supported message digests
* \brief Supported message digests.
*
* \warning MD2, MD4, MD5 and SHA-1 are considered weak message digests and
* their use constitutes a security risk. We recommend considering
@ -54,16 +54,16 @@ extern "C" {
*
*/
typedef enum {
MBEDTLS_MD_NONE=0,
MBEDTLS_MD_MD2,
MBEDTLS_MD_MD4,
MBEDTLS_MD_MD5,
MBEDTLS_MD_SHA1,
MBEDTLS_MD_SHA224,
MBEDTLS_MD_SHA256,
MBEDTLS_MD_SHA384,
MBEDTLS_MD_SHA512,
MBEDTLS_MD_RIPEMD160,
MBEDTLS_MD_NONE=0, /**< None. */
MBEDTLS_MD_MD2, /**< The MD2 message digest. */
MBEDTLS_MD_MD4, /**< The MD4 message digest. */
MBEDTLS_MD_MD5, /**< The MD5 message digest. */
MBEDTLS_MD_SHA1, /**< The SHA-1 message digest. */
MBEDTLS_MD_SHA224, /**< The SHA-224 message digest. */
MBEDTLS_MD_SHA256, /**< The SHA-256 message digest. */
MBEDTLS_MD_SHA384, /**< The SHA-384 message digest. */
MBEDTLS_MD_SHA512, /**< The SHA-512 message digest. */
MBEDTLS_MD_RIPEMD160, /**< The RIPEMD-160 message digest. */
} mbedtls_md_type_t;
#if defined(MBEDTLS_SHA512_C)
@ -108,8 +108,8 @@ const int *mbedtls_md_list( void );
*
* \param md_name The name of the digest to search for.
*
* \return The message-digest information associated with \p md_name,
* or NULL if not found.
* \return The message-digest information associated with \p md_name.
* \return NULL if the associated message-digest information is not found.
*/
const mbedtls_md_info_t *mbedtls_md_info_from_string( const char *md_name );
@ -119,8 +119,8 @@ const mbedtls_md_info_t *mbedtls_md_info_from_string( const char *md_name );
*
* \param md_type The type of digest to search for.
*
* \return The message-digest information associated with \p md_type,
* or NULL if not found.
* \return The message-digest information associated with \p md_type.
* \return NULL if the associated message-digest information is not found.
*/
const mbedtls_md_info_t *mbedtls_md_info_from_type( mbedtls_md_type_t md_type );
@ -168,9 +168,10 @@ void mbedtls_md_free( mbedtls_md_context_t *ctx );
* \param md_info The information structure of the message-digest algorithm
* to use.
*
* \returns \c 0 on success,
* #MBEDTLS_ERR_MD_BAD_INPUT_DATA on parameter failure,
* #MBEDTLS_ERR_MD_ALLOC_FAILED memory allocation failure.
* \return \c 0 on success.
* \return #MBEDTLS_ERR_MD_BAD_INPUT_DATA on parameter-verification
* failure.
* \return #MBEDTLS_ERR_MD_ALLOC_FAILED on memory-allocation failure.
*/
int mbedtls_md_init_ctx( mbedtls_md_context_t *ctx, const mbedtls_md_info_t *md_info ) MBEDTLS_DEPRECATED;
#undef MBEDTLS_DEPRECATED
@ -187,12 +188,13 @@ int mbedtls_md_init_ctx( mbedtls_md_context_t *ctx, const mbedtls_md_info_t *md_
* \param ctx The context to set up.
* \param md_info The information structure of the message-digest algorithm
* to use.
* \param hmac <ul><li>0: HMAC is not used. Saves some memory.</li>
* <li>non-zero: HMAC is used with this context.</li></ul>
* \param hmac Defines if HMAC is used. 0: HMAC is not used (saves some memory),
* or non-zero: HMAC is used with this context.
*
* \returns \c 0 on success,
* #MBEDTLS_ERR_MD_BAD_INPUT_DATA on parameter failure, or
* #MBEDTLS_ERR_MD_ALLOC_FAILED on memory allocation failure.
* \return \c 0 on success.
* \return #MBEDTLS_ERR_MD_BAD_INPUT_DATA on parameter-verification
* failure.
* \return #MBEDTLS_ERR_MD_ALLOC_FAILED on memory-allocation failure.
*/
int mbedtls_md_setup( mbedtls_md_context_t *ctx, const mbedtls_md_info_t *md_info, int hmac );
@ -212,8 +214,8 @@ int mbedtls_md_setup( mbedtls_md_context_t *ctx, const mbedtls_md_info_t *md_inf
* \param dst The destination context.
* \param src The context to be cloned.
*
* \return \c 0 on success,
* #MBEDTLS_ERR_MD_BAD_INPUT_DATA on parameter failure.
* \return \c 0 on success.
* \return #MBEDTLS_ERR_MD_BAD_INPUT_DATA on parameter-verification failure.
*/
int mbedtls_md_clone( mbedtls_md_context_t *dst,
const mbedtls_md_context_t *src );
@ -260,8 +262,9 @@ const char *mbedtls_md_get_name( const mbedtls_md_info_t *md_info );
*
* \param ctx The generic message-digest context.
*
* \returns \c 0 on success, #MBEDTLS_ERR_MD_BAD_INPUT_DATA if
* parameter verification fails.
* \return \c 0 on success.
* \return #MBEDTLS_ERR_MD_BAD_INPUT_DATA on parameter-verification
* failure.
*/
int mbedtls_md_starts( mbedtls_md_context_t *ctx );
@ -277,8 +280,9 @@ int mbedtls_md_starts( mbedtls_md_context_t *ctx );
* \param input The buffer holding the input data.
* \param ilen The length of the input data.
*
* \returns \c 0 on success, #MBEDTLS_ERR_MD_BAD_INPUT_DATA if
* parameter verification fails.
* \return \c 0 on success.
* \return #MBEDTLS_ERR_MD_BAD_INPUT_DATA on parameter-verification
* failure.
*/
int mbedtls_md_update( mbedtls_md_context_t *ctx, const unsigned char *input, size_t ilen );
@ -296,8 +300,9 @@ int mbedtls_md_update( mbedtls_md_context_t *ctx, const unsigned char *input, si
* \param ctx The generic message-digest context.
* \param output The buffer for the generic message-digest checksum result.
*
* \returns \c 0 on success, or #MBEDTLS_ERR_MD_BAD_INPUT_DATA if
* parameter verification fails.
* \return \c 0 on success.
* \return #MBEDTLS_ERR_MD_BAD_INPUT_DATA on parameter-verification
* failure.
*/
int mbedtls_md_finish( mbedtls_md_context_t *ctx, unsigned char *output );
@ -315,8 +320,9 @@ int mbedtls_md_finish( mbedtls_md_context_t *ctx, unsigned char *output );
* \param ilen The length of the input data.
* \param output The generic message-digest checksum result.
*
* \returns \c 0 on success, or #MBEDTLS_ERR_MD_BAD_INPUT_DATA if
* parameter verification fails.
* \return \c 0 on success.
* \return #MBEDTLS_ERR_MD_BAD_INPUT_DATA on parameter-verification
* failure.
*/
int mbedtls_md( const mbedtls_md_info_t *md_info, const unsigned char *input, size_t ilen,
unsigned char *output );
@ -334,9 +340,10 @@ int mbedtls_md( const mbedtls_md_info_t *md_info, const unsigned char *input, si
* \param path The input file name.
* \param output The generic message-digest checksum result.
*
* \return \c 0 on success,
* #MBEDTLS_ERR_MD_FILE_IO_ERROR if file input failed, or
* #MBEDTLS_ERR_MD_BAD_INPUT_DATA if \p md_info was NULL.
* \return \c 0 on success.
* \return #MBEDTLS_ERR_MD_FILE_IO_ERROR on an I/O error accessing
* the file pointed by \p path.
* \return #MBEDTLS_ERR_MD_BAD_INPUT_DATA if \p md_info was NULL.
*/
int mbedtls_md_file( const mbedtls_md_info_t *md_info, const char *path,
unsigned char *output );
@ -356,8 +363,9 @@ int mbedtls_md_file( const mbedtls_md_info_t *md_info, const char *path,
* \param key The HMAC secret key.
* \param keylen The length of the HMAC key in Bytes.
*
* \returns \c 0 on success, or #MBEDTLS_ERR_MD_BAD_INPUT_DATA if
* parameter verification fails.
* \return \c 0 on success.
* \return #MBEDTLS_ERR_MD_BAD_INPUT_DATA on parameter-verification
* failure.
*/
int mbedtls_md_hmac_starts( mbedtls_md_context_t *ctx, const unsigned char *key,
size_t keylen );
@ -377,8 +385,9 @@ int mbedtls_md_hmac_starts( mbedtls_md_context_t *ctx, const unsigned char *key,
* \param input The buffer holding the input data.
* \param ilen The length of the input data.
*
* \returns \c 0 on success, or #MBEDTLS_ERR_MD_BAD_INPUT_DATA if
* parameter verification fails.
* \return \c 0 on success.
* \return #MBEDTLS_ERR_MD_BAD_INPUT_DATA on parameter-verification
* failure.
*/
int mbedtls_md_hmac_update( mbedtls_md_context_t *ctx, const unsigned char *input,
size_t ilen );
@ -397,8 +406,9 @@ int mbedtls_md_hmac_update( mbedtls_md_context_t *ctx, const unsigned char *inpu
* context.
* \param output The generic HMAC checksum result.
*
* \returns \c 0 on success, or #MBEDTLS_ERR_MD_BAD_INPUT_DATA if
* parameter verification fails.
* \return \c 0 on success.
* \return #MBEDTLS_ERR_MD_BAD_INPUT_DATA on parameter-verification
* failure.
*/
int mbedtls_md_hmac_finish( mbedtls_md_context_t *ctx, unsigned char *output);
@ -413,8 +423,9 @@ int mbedtls_md_hmac_finish( mbedtls_md_context_t *ctx, unsigned char *output);
* \param ctx The message digest context containing an embedded HMAC
* context.
*
* \returns \c 0 on success, or #MBEDTLS_ERR_MD_BAD_INPUT_DATA if
* parameter verification fails.
* \return \c 0 on success.
* \return #MBEDTLS_ERR_MD_BAD_INPUT_DATA on parameter-verification
* failure.
*/
int mbedtls_md_hmac_reset( mbedtls_md_context_t *ctx );
@ -436,8 +447,9 @@ int mbedtls_md_hmac_reset( mbedtls_md_context_t *ctx );
* \param ilen The length of the input data.
* \param output The generic HMAC result.
*
* \returns \c 0 on success, or #MBEDTLS_ERR_MD_BAD_INPUT_DATA if
* parameter verification fails.
* \return \c 0 on success.
* \return #MBEDTLS_ERR_MD_BAD_INPUT_DATA on parameter-verification
* failure.
*/
int mbedtls_md_hmac( const mbedtls_md_info_t *md_info, const unsigned char *key, size_t keylen,
const unsigned char *input, size_t ilen,

24
include/mbedtls/md2.h
View file

@ -39,14 +39,14 @@
#define MBEDTLS_ERR_MD2_HW_ACCEL_FAILED -0x002B /**< MD2 hardware accelerator failed */
#if !defined(MBEDTLS_MD2_ALT)
// Regular implementation
//
#ifdef __cplusplus
extern "C" {
#endif
#if !defined(MBEDTLS_MD2_ALT)
// Regular implementation
//
/**
* \brief MD2 context structure
*
@ -64,6 +64,10 @@ typedef struct
}
mbedtls_md2_context;
#else /* MBEDTLS_MD2_ALT */
#include "md2_alt.h"
#endif /* MBEDTLS_MD2_ALT */
/**
* \brief Initialize MD2 context
*
@ -235,18 +239,6 @@ MBEDTLS_DEPRECATED void mbedtls_md2_process( mbedtls_md2_context *ctx );
#undef MBEDTLS_DEPRECATED
#endif /* !MBEDTLS_DEPRECATED_REMOVED */
#ifdef __cplusplus
}
#endif
#else /* MBEDTLS_MD2_ALT */
#include "md2_alt.h"
#endif /* MBEDTLS_MD2_ALT */
#ifdef __cplusplus
extern "C" {
#endif
/**
* \brief Output = MD2( input buffer )
*

24
include/mbedtls/md4.h
View file

@ -40,14 +40,14 @@
#define MBEDTLS_ERR_MD4_HW_ACCEL_FAILED -0x002D /**< MD4 hardware accelerator failed */
#if !defined(MBEDTLS_MD4_ALT)
// Regular implementation
//
#ifdef __cplusplus
extern "C" {
#endif
#if !defined(MBEDTLS_MD4_ALT)
// Regular implementation
//
/**
* \brief MD4 context structure
*
@ -64,6 +64,10 @@ typedef struct
}
mbedtls_md4_context;
#else /* MBEDTLS_MD4_ALT */
#include "md4_alt.h"
#endif /* MBEDTLS_MD4_ALT */
/**
* \brief Initialize MD4 context
*
@ -238,18 +242,6 @@ MBEDTLS_DEPRECATED void mbedtls_md4_process( mbedtls_md4_context *ctx,
#undef MBEDTLS_DEPRECATED
#endif /* !MBEDTLS_DEPRECATED_REMOVED */
#ifdef __cplusplus
}
#endif
#else /* MBEDTLS_MD4_ALT */
#include "md4_alt.h"
#endif /* MBEDTLS_MD4_ALT */
#ifdef __cplusplus
extern "C" {
#endif
/**
* \brief Output = MD4( input buffer )
*

24
include/mbedtls/md5.h
View file

@ -39,14 +39,14 @@
#define MBEDTLS_ERR_MD5_HW_ACCEL_FAILED -0x002F /**< MD5 hardware accelerator failed */
#if !defined(MBEDTLS_MD5_ALT)
// Regular implementation
//
#ifdef __cplusplus
extern "C" {
#endif
#if !defined(MBEDTLS_MD5_ALT)
// Regular implementation
//
/**
* \brief MD5 context structure
*
@ -63,6 +63,10 @@ typedef struct
}
mbedtls_md5_context;
#else /* MBEDTLS_MD5_ALT */
#include "md5_alt.h"
#endif /* MBEDTLS_MD5_ALT */
/**
* \brief Initialize MD5 context
*
@ -238,18 +242,6 @@ MBEDTLS_DEPRECATED void mbedtls_md5_process( mbedtls_md5_context *ctx,
#undef MBEDTLS_DEPRECATED
#endif /* !MBEDTLS_DEPRECATED_REMOVED */
#ifdef __cplusplus
}
#endif
#else /* MBEDTLS_MD5_ALT */
#include "md5_alt.h"
#endif /* MBEDTLS_MD5_ALT */
#ifdef __cplusplus
extern "C" {
#endif
/**
* \brief Output = MD5( input buffer )
*

33
include/mbedtls/net_sockets.h
View file

@ -46,12 +46,17 @@
#define MBEDTLS_ERR_NET_UNKNOWN_HOST -0x0052 /**< Failed to get an IP address for the given hostname. */
#define MBEDTLS_ERR_NET_BUFFER_TOO_SMALL -0x0043 /**< Buffer is too small to hold the data. */
#define MBEDTLS_ERR_NET_INVALID_CONTEXT -0x0045 /**< The context is invalid, eg because it was free()ed. */
#define MBEDTLS_ERR_NET_POLL_FAILED -0x0047 /**< Polling the net context failed. */
#define MBEDTLS_ERR_NET_BAD_INPUT_DATA -0x0049 /**< Input invalid. */
#define MBEDTLS_NET_LISTEN_BACKLOG 10 /**< The backlog that listen() should use. */
#define MBEDTLS_NET_PROTO_TCP 0 /**< The TCP transport protocol */
#define MBEDTLS_NET_PROTO_UDP 1 /**< The UDP transport protocol */
#define MBEDTLS_NET_POLL_READ 1 /**< Used in \c mbedtls_net_poll to check for pending data */
#define MBEDTLS_NET_POLL_WRITE 2 /**< Used in \c mbedtls_net_poll to check if write possible */
#ifdef __cplusplus
extern "C" {
#endif
@ -118,9 +123,10 @@ int mbedtls_net_bind( mbedtls_net_context *ctx, const char *bind_ip, const char
*
* \param bind_ctx Relevant socket
* \param client_ctx Will contain the connected client socket
* \param client_ip Will contain the client IP address
* \param client_ip Will contain the client IP address, can be NULL
* \param buf_size Size of the client_ip buffer
* \param ip_len Will receive the size of the client IP written
* \param ip_len Will receive the size of the client IP written,
* can be NULL if client_ip is null
*
* \return 0 if successful, or
* MBEDTLS_ERR_NET_ACCEPT_FAILED, or
@ -132,6 +138,29 @@ int mbedtls_net_accept( mbedtls_net_context *bind_ctx,
mbedtls_net_context *client_ctx,
void *client_ip, size_t buf_size, size_t *ip_len );
/**
* \brief Check and wait for the context to be ready for read/write
*
* \param ctx Socket to check
* \param rw Bitflag composed of MBEDTLS_NET_POLL_READ and
* MBEDTLS_NET_POLL_WRITE specifying the events
* to wait for:
* - If MBEDTLS_NET_POLL_READ is set, the function
* will return as soon as the net context is available
* for reading.
* - If MBEDTLS_NET_POLL_WRITE is set, the function
* will return as soon as the net context is available
* for writing.
* \param timeout Maximal amount of time to wait before returning,
* in milliseconds. If \c timeout is zero, the
* function returns immediately. If \c timeout is
* -1u, the function blocks potentially indefinitely.
*
* \return Bitmask composed of MBEDTLS_NET_POLL_READ/WRITE
* on success or timeout, or a negative return code otherwise.
*/
int mbedtls_net_poll( mbedtls_net_context *ctx, uint32_t rw, uint32_t timeout );
/**
* \brief Set the socket blocking
*

12
include/mbedtls/pk.h
View file

@ -63,7 +63,7 @@
#define MBEDTLS_ERR_PK_INVALID_ALG -0x3A80 /**< The algorithm tag or value is invalid. */
#define MBEDTLS_ERR_PK_UNKNOWN_NAMED_CURVE -0x3A00 /**< Elliptic curve is unsupported (only NIST curves are supported). */
#define MBEDTLS_ERR_PK_FEATURE_UNAVAILABLE -0x3980 /**< Unavailable feature, e.g. RSA disabled for RSA key. */
#define MBEDTLS_ERR_PK_SIG_LEN_MISMATCH -0x3900 /**< The signature is valid but its length is less than expected. */
#define MBEDTLS_ERR_PK_SIG_LEN_MISMATCH -0x3900 /**< The buffer contains a valid signature followed by more data. */
#define MBEDTLS_ERR_PK_HW_ACCEL_FAILED -0x3880 /**< PK hardware accelerator failed. */
#ifdef __cplusplus
@ -269,8 +269,8 @@ int mbedtls_pk_can_do( const mbedtls_pk_context *ctx, mbedtls_pk_type_t type );
* \param sig_len Signature length
*
* \return 0 on success (signature is valid),
* MBEDTLS_ERR_PK_SIG_LEN_MISMATCH if the signature is
* valid but its actual length is less than sig_len,
* #MBEDTLS_ERR_PK_SIG_LEN_MISMATCH if there is a valid
* signature in sig but its length is less than \p siglen,
* or a specific error code.
*
* \note For RSA keys, the default padding type is PKCS#1 v1.5.
@ -300,10 +300,10 @@ int mbedtls_pk_verify( mbedtls_pk_context *ctx, mbedtls_md_type_t md_alg,
* \param sig_len Signature length
*
* \return 0 on success (signature is valid),
* MBEDTLS_ERR_PK_TYPE_MISMATCH if the PK context can't be
* #MBEDTLS_ERR_PK_TYPE_MISMATCH if the PK context can't be
* used for this type of signatures,
* MBEDTLS_ERR_PK_SIG_LEN_MISMATCH if the signature is
* valid but its actual length is less than sig_len,
* #MBEDTLS_ERR_PK_SIG_LEN_MISMATCH if there is a valid
* signature in sig but its length is less than \p siglen,
* or a specific error code.
*
* \note If hash_len is 0, then the length associated with md_alg

69
include/mbedtls/platform.h
View file

@ -1,7 +1,16 @@
/**
* \file platform.h
*
* \brief The Mbed TLS platform abstraction layer.
* \brief This file contains the definitions and functions of the
* Mbed TLS platform abstraction layer.
*
* The platform abstraction layer removes the need for the library
* to directly link to standard C library functions or operating
* system services, making the library easier to port and embed.
* Application developers and users of the library can provide their own
* implementations of these functions, or implementations specific to
* their platform, which can be statically linked to the library or
* dynamically configured at runtime.
*/
/*
* Copyright (C) 2006-2018, Arm Limited (or its affiliates), All Rights Reserved
@ -102,7 +111,7 @@ extern "C" {
/* \} name SECTION: Module settings */
/*
* The function pointers for calloc and free
* The function pointers for calloc and free.
*/
#if defined(MBEDTLS_PLATFORM_MEMORY)
#if defined(MBEDTLS_PLATFORM_FREE_MACRO) && \
@ -116,7 +125,8 @@ extern void * (*mbedtls_calloc)( size_t n, size_t size );
extern void (*mbedtls_free)( void *ptr );
/**
* \brief This function allows configuring custom memory-management functions.
* \brief This function dynamically sets the memory-management
* functions used by the library, during runtime.
*
* \param calloc_func The \c calloc function implementation.
* \param free_func The \c free function implementation.
@ -140,7 +150,9 @@ int mbedtls_platform_set_calloc_free( void * (*calloc_func)( size_t, size_t ),
extern int (*mbedtls_fprintf)( FILE *stream, const char *format, ... );
/**
* \brief This function allows configuring a custom \p fprintf function pointer.
* \brief This function dynamically configures the fprintf
* function that is called when the
* mbedtls_fprintf() function is invoked by the library.
*
* \param fprintf_func The \c fprintf function implementation.
*
@ -163,8 +175,9 @@ int mbedtls_platform_set_fprintf( int (*fprintf_func)( FILE *stream, const char
extern int (*mbedtls_printf)( const char *format, ... );
/**
* \brief This function allows configuring a custom \c printf function
* pointer.
* \brief This function dynamically configures the snprintf
* function that is called when the mbedtls_snprintf()
* function is invoked by the library.
*
* \param printf_func The \c printf function implementation.
*
@ -197,12 +210,12 @@ int mbedtls_platform_win32_snprintf( char *s, size_t n, const char *fmt, ... );
extern int (*mbedtls_snprintf)( char * s, size_t n, const char * format, ... );
/**
* \brief This function allows configuring a custom \c snprintf function
* pointer.
* \brief This function allows configuring a custom
* \c snprintf function pointer.
*
* \param snprintf_func The \c snprintf function implementation.
*
* \return \c 0 on success.
* \return \c 0 on success.
*/
int mbedtls_platform_set_snprintf( int (*snprintf_func)( char * s, size_t n,
const char * format, ... ) );
@ -210,7 +223,7 @@ int mbedtls_platform_set_snprintf( int (*snprintf_func)( char * s, size_t n,
#if defined(MBEDTLS_PLATFORM_SNPRINTF_MACRO)
#define mbedtls_snprintf MBEDTLS_PLATFORM_SNPRINTF_MACRO
#else
#define mbedtls_snprintf snprintf
#define mbedtls_snprintf MBEDTLS_PLATFORM_STD_SNPRINTF
#endif /* MBEDTLS_PLATFORM_SNPRINTF_MACRO */
#endif /* MBEDTLS_PLATFORM_SNPRINTF_ALT */
@ -221,12 +234,13 @@ int mbedtls_platform_set_snprintf( int (*snprintf_func)( char * s, size_t n,
extern void (*mbedtls_exit)( int status );
/**
* \brief This function allows configuring a custom \c exit function
* pointer.
* \brief This function dynamically configures the exit
* function that is called when the mbedtls_exit()
* function is invoked by the library.
*
* \param exit_func The \c exit function implementation.
*
* \return \c 0 on success.
* \return \c 0 on success.
*/
int mbedtls_platform_set_exit( void (*exit_func)( int status ) );
#else
@ -302,7 +316,7 @@ int mbedtls_platform_set_nv_seed(
* setup or teardown operations.
*/
typedef struct {
char dummy; /**< Placeholder member, as empty structs are not portable. */
char dummy; /**< A placeholder member, as empty structs are not portable. */
}
mbedtls_platform_context;
@ -311,33 +325,34 @@ mbedtls_platform_context;
#endif /* !MBEDTLS_PLATFORM_SETUP_TEARDOWN_ALT */
/**
* \brief This function performs any platform initialization operations.
* \brief This function performs any platform-specific initialization
* operations.
*
* \param ctx The Mbed TLS context.
* \note This function should be called before any other library functions.
*
* \return \c 0 on success.
*
* \note This function is intended to allow platform-specific initialization,
* and should be called before any other library functions. Its
* implementation is platform-specific, and unless
* Its implementation is platform-specific, and unless
* platform-specific code is provided, it does nothing.
*
* Its use and whether it is necessary to call it is dependent on the
* platform.
* \note The usage and necessity of this function is dependent on the platform.
*
* \param ctx The platform context.
*
* \return \c 0 on success.
*/
int mbedtls_platform_setup( mbedtls_platform_context *ctx );
/**
* \brief This function performs any platform teardown operations.
*
* \param ctx The Mbed TLS context.
*
* \note This function should be called after every other Mbed TLS module
* has been correctly freed using the appropriate free function.
*
* Its implementation is platform-specific, and unless
* platform-specific code is provided, it does nothing.
*
* Its use and whether it is necessary to call it is dependent on the
* platform.
* \note The usage and necessity of this function is dependent on the platform.
*
* \param ctx The platform context.
*
*/
void mbedtls_platform_teardown( mbedtls_platform_context *ctx );

62
include/mbedtls/platform_util.h Normal file
View file

@ -0,0 +1,62 @@
/**
* \file platform_util.h
*
* \brief Common and shared functions used by multiple modules in the Mbed TLS
* library.
*/
/*
* Copyright (C) 2018, Arm Limited, All Rights Reserved
* SPDX-License-Identifier: Apache-2.0
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may
* not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* This file is part of Mbed TLS (https://tls.mbed.org)
*/
#ifndef MBEDTLS_PLATFORM_UTIL_H
#define MBEDTLS_PLATFORM_UTIL_H
#include <stddef.h>
#ifdef __cplusplus
extern "C" {
#endif
/**
* \brief Securely zeroize a buffer
*
* The function is meant to wipe the data contained in a buffer so
* that it can no longer be recovered even if the program memory
* is later compromised. Call this function on sensitive data
* stored on the stack before returning from a function, and on
* sensitive data stored on the heap before freeing the heap
* object.
*
* It is extremely difficult to guarantee that calls to
* mbedtls_platform_zeroize() are not removed by aggressive
* compiler optimizations in a portable way. For this reason, Mbed
* TLS provides the configuration option
* MBEDTLS_PLATFORM_ZEROIZE_ALT, which allows users to configure
* mbedtls_platform_zeroize() to use a suitable implementation for
* their platform and needs
*
* \param buf Buffer to be zeroized
* \param len Length of the buffer in bytes
*
*/
void mbedtls_platform_zeroize( void *buf, size_t len );
#ifdef __cplusplus
}
#endif
#endif /* MBEDTLS_PLATFORM_UTIL_H */

24
include/mbedtls/ripemd160.h
View file

@ -35,14 +35,14 @@
#define MBEDTLS_ERR_RIPEMD160_HW_ACCEL_FAILED -0x0031 /**< RIPEMD160 hardware accelerator failed */
#if !defined(MBEDTLS_RIPEMD160_ALT)
// Regular implementation
//
#ifdef __cplusplus
extern "C" {
#endif
#if !defined(MBEDTLS_RIPEMD160_ALT)
// Regular implementation
//
/**
* \brief RIPEMD-160 context structure
*/
@ -54,6 +54,10 @@ typedef struct
}
mbedtls_ripemd160_context;
#else /* MBEDTLS_RIPEMD160_ALT */
#include "ripemd160.h"
#endif /* MBEDTLS_RIPEMD160_ALT */
/**
* \brief Initialize RIPEMD-160 context
*
@ -178,18 +182,6 @@ MBEDTLS_DEPRECATED void mbedtls_ripemd160_process(
#undef MBEDTLS_DEPRECATED
#endif /* !MBEDTLS_DEPRECATED_REMOVED */
#ifdef __cplusplus
}
#endif
#else /* MBEDTLS_RIPEMD160_ALT */
#include "ripemd160_alt.h"
#endif /* MBEDTLS_RIPEMD160_ALT */
#ifdef __cplusplus
extern "C" {
#endif
/**
* \brief Output = RIPEMD-160( input buffer )
*

699
include/mbedtls/rsa.h
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File diff suppressed because it is too large Load diff

60
include/mbedtls/rsa_internal.h
View file

@ -2,6 +2,37 @@
* \file rsa_internal.h
*
* \brief Context-independent RSA helper functions
*
* This module declares some RSA-related helper functions useful when
* implementing the RSA interface. These functions are provided in a separate
* compilation unit in order to make it easy for designers of alternative RSA
* implementations to use them in their own code, as it is conceived that the
* functionality they provide will be necessary for most complete
* implementations.
*
* End-users of Mbed TLS who are not providing their own alternative RSA
* implementations should not use these functions directly, and should instead
* use only the functions declared in rsa.h.
*
* The interface provided by this module will be maintained through LTS (Long
* Term Support) branches of Mbed TLS, but may otherwise be subject to change,
* and must be considered an internal interface of the library.
*
* There are two classes of helper functions:
*
* (1) Parameter-generating helpers. These are:
* - mbedtls_rsa_deduce_primes
* - mbedtls_rsa_deduce_private_exponent
* - mbedtls_rsa_deduce_crt
* Each of these functions takes a set of core RSA parameters and
* generates some other, or CRT related parameters.
*
* (2) Parameter-checking helpers. These are:
* - mbedtls_rsa_validate_params
* - mbedtls_rsa_validate_crt
* They take a set of core or CRT related RSA parameters and check their
* validity.
*
*/
/*
* Copyright (C) 2006-2017, ARM Limited, All Rights Reserved
@ -21,31 +52,6 @@
*
* This file is part of mbed TLS (https://tls.mbed.org)
*
*
* This file declares some RSA-related helper functions useful when
* implementing the RSA interface. They are public and provided in a
* separate compilation unit in order to make it easy for designers of
* alternative RSA implementations to use them in their code, as it is
* conceived that the functionality they provide will be necessary
* for most complete implementations.
*
* End-users of Mbed TLS not intending to re-implement the RSA functionality
* are not expected to get into the need of making use of these functions directly,
* but instead should be able to use the functions declared in rsa.h.
*
* There are two classes of helper functions:
* (1) Parameter-generating helpers. These are:
* - mbedtls_rsa_deduce_primes
* - mbedtls_rsa_deduce_private_exponent
* - mbedtls_rsa_deduce_crt
* Each of these functions takes a set of core RSA parameters
* and generates some other, or CRT related parameters.
* (2) Parameter-checking helpers. These are:
* - mbedtls_rsa_validate_params
* - mbedtls_rsa_validate_crt
* They take a set of core or CRT related RSA parameters
* and check their validity.
*
*/
#ifndef MBEDTLS_RSA_INTERNAL_H
@ -213,4 +219,8 @@ int mbedtls_rsa_validate_crt( const mbedtls_mpi *P, const mbedtls_mpi *Q,
const mbedtls_mpi *D, const mbedtls_mpi *DP,
const mbedtls_mpi *DQ, const mbedtls_mpi *QP );
#ifdef __cplusplus
}
#endif
#endif /* rsa_internal.h */

164
include/mbedtls/sha1.h
View file

@ -1,7 +1,10 @@
/**
* \file sha1.h
*
* \brief The SHA-1 cryptographic hash function.
* \brief This file contains SHA-1 definitions and functions.
*
* The Secure Hash Algorithm 1 (SHA-1) cryptographic hash function is defined in
* <em>FIPS 180-4: Secure Hash Standard (SHS)</em>.
*
* \warning SHA-1 is considered a weak message digest and its use constitutes
* a security risk. We recommend considering stronger message
@ -39,14 +42,14 @@
#define MBEDTLS_ERR_SHA1_HW_ACCEL_FAILED -0x0035 /**< SHA-1 hardware accelerator failed */
#if !defined(MBEDTLS_SHA1_ALT)
// Regular implementation
//
#ifdef __cplusplus
extern "C" {
#endif
#if !defined(MBEDTLS_SHA1_ALT)
// Regular implementation
//
/**
* \brief The SHA-1 context structure.
*
@ -63,40 +66,44 @@ typedef struct
}
mbedtls_sha1_context;
#else /* MBEDTLS_SHA1_ALT */
#include "sha1_alt.h"
#endif /* MBEDTLS_SHA1_ALT */
/**
* \brief This function initializes a SHA-1 context.
*
* \param ctx The SHA-1 context to initialize.
*
* \warning SHA-1 is considered a weak message digest and its use
* constitutes a security risk. We recommend considering
* stronger message digests instead.
*
* \param ctx The SHA-1 context to initialize.
*
*/
void mbedtls_sha1_init( mbedtls_sha1_context *ctx );
/**
* \brief This function clears a SHA-1 context.
*
* \param ctx The SHA-1 context to clear.
*
* \warning SHA-1 is considered a weak message digest and its use
* constitutes a security risk. We recommend considering
* stronger message digests instead.
*
* \param ctx The SHA-1 context to clear.
*
*/
void mbedtls_sha1_free( mbedtls_sha1_context *ctx );
/**
* \brief This function clones the state of a SHA-1 context.
*
* \param dst The destination context.
* \param src The context to clone.
*
* \warning SHA-1 is considered a weak message digest and its use
* constitutes a security risk. We recommend considering
* stronger message digests instead.
*
* \param dst The SHA-1 context to clone to.
* \param src The SHA-1 context to clone from.
*
*/
void mbedtls_sha1_clone( mbedtls_sha1_context *dst,
const mbedtls_sha1_context *src );
@ -104,14 +111,14 @@ void mbedtls_sha1_clone( mbedtls_sha1_context *dst,
/**
* \brief This function starts a SHA-1 checksum calculation.
*
* \param ctx The context to initialize.
*
* \return \c 0 if successful
*
* \warning SHA-1 is considered a weak message digest and its use
* constitutes a security risk. We recommend considering
* stronger message digests instead.
*
* \param ctx The SHA-1 context to initialize.
*
* \return \c 0 on success.
*
*/
int mbedtls_sha1_starts_ret( mbedtls_sha1_context *ctx );
@ -119,16 +126,15 @@ int mbedtls_sha1_starts_ret( mbedtls_sha1_context *ctx );
* \brief This function feeds an input buffer into an ongoing SHA-1
* checksum calculation.
*
* \param ctx The SHA-1 context.
* \param input The buffer holding the input data.
* \param ilen The length of the input data.
*
* \return \c 0 if successful
*
* \warning SHA-1 is considered a weak message digest and its use
* constitutes a security risk. We recommend considering
* stronger message digests instead.
*
* \param ctx The SHA-1 context.
* \param input The buffer holding the input data.
* \param ilen The length of the input data.
*
* \return \c 0 on success.
*/
int mbedtls_sha1_update_ret( mbedtls_sha1_context *ctx,
const unsigned char *input,
@ -138,31 +144,30 @@ int mbedtls_sha1_update_ret( mbedtls_sha1_context *ctx,
* \brief This function finishes the SHA-1 operation, and writes
* the result to the output buffer.
*
* \param ctx The SHA-1 context.
* \param output The SHA-1 checksum result.
*
* \return \c 0 if successful
*
* \warning SHA-1 is considered a weak message digest and its use
* constitutes a security risk. We recommend considering
* stronger message digests instead.
*
* \param ctx The SHA-1 context.
* \param output The SHA-1 checksum result.
*
* \return \c 0 on success.
*/
int mbedtls_sha1_finish_ret( mbedtls_sha1_context *ctx,
unsigned char output[20] );
/**
* \brief SHA-1 process data block (internal use only)
*
* \param ctx SHA-1 context
* \param data The data block being processed.
*
* \return \c 0 if successful
* \brief SHA-1 process data block (internal use only).
*
* \warning SHA-1 is considered a weak message digest and its use
* constitutes a security risk. We recommend considering
* stronger message digests instead.
*
* \param ctx The SHA-1 context.
* \param data The data block being processed.
*
* \return \c 0 on success.
*
*/
int mbedtls_internal_sha1_process( mbedtls_sha1_context *ctx,
const unsigned char data[64] );
@ -174,65 +179,67 @@ int mbedtls_internal_sha1_process( mbedtls_sha1_context *ctx,
#define MBEDTLS_DEPRECATED
#endif
/**
* \brief SHA-1 context setup
*
* \deprecated Superseded by mbedtls_sha1_starts_ret() in 2.7.0
*
* \param ctx The SHA-1 context to be initialized.
* \brief This function starts a SHA-1 checksum calculation.
*
* \warning SHA-1 is considered a weak message digest and its use
* constitutes a security risk. We recommend considering
* stronger message digests instead.
*
* \deprecated Superseded by mbedtls_sha1_starts_ret() in 2.7.0.
*
* \param ctx The SHA-1 context to initialize.
*
*/
MBEDTLS_DEPRECATED void mbedtls_sha1_starts( mbedtls_sha1_context *ctx );
/**
* \brief SHA-1 process buffer
*
* \deprecated Superseded by mbedtls_sha1_update_ret() in 2.7.0
*
* \param ctx The SHA-1 context.
* \param input The buffer holding the input data.
* \param ilen The length of the input data.
* \brief This function feeds an input buffer into an ongoing SHA-1
* checksum calculation.
*
* \warning SHA-1 is considered a weak message digest and its use
* constitutes a security risk. We recommend considering
* stronger message digests instead.
*
* \deprecated Superseded by mbedtls_sha1_update_ret() in 2.7.0.
*
* \param ctx The SHA-1 context.
* \param input The buffer holding the input data.
* \param ilen The length of the input data.
*
*/
MBEDTLS_DEPRECATED void mbedtls_sha1_update( mbedtls_sha1_context *ctx,
const unsigned char *input,
size_t ilen );
/**
* \brief SHA-1 final digest
*
* \deprecated Superseded by mbedtls_sha1_finish_ret() in 2.7.0
*
* \param ctx The SHA-1 context.
* \param output The SHA-1 checksum result.
* \brief This function finishes the SHA-1 operation, and writes
* the result to the output buffer.
*
* \warning SHA-1 is considered a weak message digest and its use
* constitutes a security risk. We recommend considering
* stronger message digests instead.
*
* \deprecated Superseded by mbedtls_sha1_finish_ret() in 2.7.0.
*
* \param ctx The SHA-1 context.
* \param output The SHA-1 checksum result.
*
*/
MBEDTLS_DEPRECATED void mbedtls_sha1_finish( mbedtls_sha1_context *ctx,
unsigned char output[20] );
/**
* \brief SHA-1 process data block (internal use only)
*
* \deprecated Superseded by mbedtls_internal_sha1_process() in 2.7.0
*
* \param ctx The SHA-1 context.
* \param data The data block being processed.
* \brief SHA-1 process data block (internal use only).
*
* \warning SHA-1 is considered a weak message digest and its use
* constitutes a security risk. We recommend considering
* stronger message digests instead.
*
* \deprecated Superseded by mbedtls_internal_sha1_process() in 2.7.0.
*
* \param ctx The SHA-1 context.
* \param data The data block being processed.
*
*/
MBEDTLS_DEPRECATED void mbedtls_sha1_process( mbedtls_sha1_context *ctx,
const unsigned char data[64] );
@ -240,18 +247,6 @@ MBEDTLS_DEPRECATED void mbedtls_sha1_process( mbedtls_sha1_context *ctx,
#undef MBEDTLS_DEPRECATED
#endif /* !MBEDTLS_DEPRECATED_REMOVED */
#ifdef __cplusplus
}
#endif
#else /* MBEDTLS_SHA1_ALT */
#include "sha1_alt.h"
#endif /* MBEDTLS_SHA1_ALT */
#ifdef __cplusplus
extern "C" {
#endif
/**
* \brief This function calculates the SHA-1 checksum of a buffer.
*
@ -261,15 +256,15 @@ extern "C" {
* The SHA-1 result is calculated as
* output = SHA-1(input buffer).
*
* \warning SHA-1 is considered a weak message digest and its use
* constitutes a security risk. We recommend considering
* stronger message digests instead.
*
* \param input The buffer holding the input data.
* \param ilen The length of the input data.
* \param output The SHA-1 checksum result.
*
* \return \c 0 if successful
*
* \warning SHA-1 is considered a weak message digest and its use
* constitutes a security risk. We recommend considering
* stronger message digests instead.
* \return \c 0 on success.
*
*/
int mbedtls_sha1_ret( const unsigned char *input,
@ -283,7 +278,17 @@ int mbedtls_sha1_ret( const unsigned char *input,
#define MBEDTLS_DEPRECATED
#endif
/**
* \brief Output = SHA-1( input buffer )
* \brief This function calculates the SHA-1 checksum of a buffer.
*
* The function allocates the context, performs the
* calculation, and frees the context.
*
* The SHA-1 result is calculated as
* output = SHA-1(input buffer).
*
* \warning SHA-1 is considered a weak message digest and its use
* constitutes a security risk. We recommend considering
* stronger message digests instead.
*
* \deprecated Superseded by mbedtls_sha1_ret() in 2.7.0
*
@ -291,10 +296,6 @@ int mbedtls_sha1_ret( const unsigned char *input,
* \param ilen The length of the input data.
* \param output The SHA-1 checksum result.
*
* \warning SHA-1 is considered a weak message digest and its use
* constitutes a security risk. We recommend considering
* stronger message digests instead.
*
*/
MBEDTLS_DEPRECATED void mbedtls_sha1( const unsigned char *input,
size_t ilen,
@ -306,12 +307,13 @@ MBEDTLS_DEPRECATED void mbedtls_sha1( const unsigned char *input,
/**
* \brief The SHA-1 checkup routine.
*
* \return \c 0 on success, or \c 1 on failure.
*
* \warning SHA-1 is considered a weak message digest and its use
* constitutes a security risk. We recommend considering
* stronger message digests instead.
*
* \return \c 0 on success.
* \return \c 1 on failure.
*
*/
int mbedtls_sha1_self_test( int verbose );

70
include/mbedtls/sha256.h
View file

@ -1,7 +1,10 @@
/**
* \file sha256.h
*
* \brief The SHA-224 and SHA-256 cryptographic hash function.
* \brief This file contains SHA-224 and SHA-256 definitions and functions.
*
* The Secure Hash Algorithms 224 and 256 (SHA-224 and SHA-256) cryptographic
* hash functions are defined in <em>FIPS 180-4: Secure Hash Standard (SHS)</em>.
*/
/*
* Copyright (C) 2006-2018, Arm Limited (or its affiliates), All Rights Reserved
@ -35,14 +38,14 @@
#define MBEDTLS_ERR_SHA256_HW_ACCEL_FAILED -0x0037 /**< SHA-256 hardware accelerator failed */
#if !defined(MBEDTLS_SHA256_ALT)
// Regular implementation
//
#ifdef __cplusplus
extern "C" {
#endif
#if !defined(MBEDTLS_SHA256_ALT)
// Regular implementation
//
/**
* \brief The SHA-256 context structure.
*
@ -55,12 +58,15 @@ typedef struct
uint32_t total[2]; /*!< The number of Bytes processed. */
uint32_t state[8]; /*!< The intermediate digest state. */
unsigned char buffer[64]; /*!< The data block being processed. */
int is224; /*!< Determines which function to use.
<ul><li>0: Use SHA-256.</li>
<li>1: Use SHA-224.</li></ul> */
int is224; /*!< Determines which function to use:
0: Use SHA-256, or 1: Use SHA-224. */
}
mbedtls_sha256_context;
#else /* MBEDTLS_SHA256_ALT */
#include "sha256_alt.h"
#endif /* MBEDTLS_SHA256_ALT */
/**
* \brief This function initializes a SHA-256 context.
*
@ -89,9 +95,8 @@ void mbedtls_sha256_clone( mbedtls_sha256_context *dst,
* calculation.
*
* \param ctx The context to initialize.
* \param is224 Determines which function to use.
* <ul><li>0: Use SHA-256.</li>
* <li>1: Use SHA-224.</li></ul>
* \param is224 Determines which function to use:
* 0: Use SHA-256, or 1: Use SHA-224.
*
* \return \c 0 on success.
*/
@ -101,9 +106,9 @@ int mbedtls_sha256_starts_ret( mbedtls_sha256_context *ctx, int is224 );
* \brief This function feeds an input buffer into an ongoing
* SHA-256 checksum calculation.
*
* \param ctx SHA-256 context
* \param input buffer holding the data
* \param ilen length of the input data
* \param ctx The SHA-256 context.
* \param input The buffer holding the data.
* \param ilen The length of the input data.
*
* \return \c 0 on success.
*/
@ -143,14 +148,15 @@ int mbedtls_internal_sha256_process( mbedtls_sha256_context *ctx,
#define MBEDTLS_DEPRECATED
#endif
/**
* \brief This function starts a SHA-256 checksum calculation.
* \brief This function starts a SHA-224 or SHA-256 checksum
* calculation.
*
*
* \deprecated Superseded by mbedtls_sha256_starts_ret() in 2.7.0.
*
* \param ctx The SHA-256 context to initialize.
* \param is224 Determines which function to use.
* <ul><li>0: Use SHA-256.</li>
* <li>1: Use SHA-224.</li></ul>
* \param ctx The context to initialize.
* \param is224 Determines which function to use:
* 0: Use SHA-256, or 1: Use SHA-224.
*/
MBEDTLS_DEPRECATED void mbedtls_sha256_starts( mbedtls_sha256_context *ctx,
int is224 );
@ -176,7 +182,7 @@ MBEDTLS_DEPRECATED void mbedtls_sha256_update( mbedtls_sha256_context *ctx,
* \deprecated Superseded by mbedtls_sha256_finish_ret() in 2.7.0.
*
* \param ctx The SHA-256 context.
* \param output The SHA-224or SHA-256 checksum result.
* \param output The SHA-224 or SHA-256 checksum result.
*/
MBEDTLS_DEPRECATED void mbedtls_sha256_finish( mbedtls_sha256_context *ctx,
unsigned char output[32] );
@ -196,17 +202,6 @@ MBEDTLS_DEPRECATED void mbedtls_sha256_process( mbedtls_sha256_context *ctx,
#undef MBEDTLS_DEPRECATED
#endif /* !MBEDTLS_DEPRECATED_REMOVED */
#ifdef __cplusplus
}
#endif
#else /* MBEDTLS_SHA256_ALT */
#include "sha256_alt.h"
#endif /* MBEDTLS_SHA256_ALT */
#ifdef __cplusplus
extern "C" {
#endif
/**
* \brief This function calculates the SHA-224 or SHA-256
@ -221,9 +216,8 @@ extern "C" {
* \param input The buffer holding the input data.
* \param ilen The length of the input data.
* \param output The SHA-224 or SHA-256 checksum result.
* \param is224 Determines which function to use.
* <ul><li>0: Use SHA-256.</li>
* <li>1: Use SHA-224.</li></ul>
* \param is224 Determines which function to use:
* 0: Use SHA-256, or 1: Use SHA-224.
*/
int mbedtls_sha256_ret( const unsigned char *input,
size_t ilen,
@ -252,9 +246,8 @@ int mbedtls_sha256_ret( const unsigned char *input,
* \param input The buffer holding the data.
* \param ilen The length of the input data.
* \param output The SHA-224 or SHA-256 checksum result.
* \param is224 Determines which function to use.
* <ul><li>0: Use SHA-256.</li>
* <li>1: Use SHA-224.</li></ul>
* \param is224 Determines which function to use:
* 0: Use SHA-256, or 1: Use SHA-224.
*/
MBEDTLS_DEPRECATED void mbedtls_sha256( const unsigned char *input,
size_t ilen,
@ -267,7 +260,8 @@ MBEDTLS_DEPRECATED void mbedtls_sha256( const unsigned char *input,
/**
* \brief The SHA-224 and SHA-256 checkup routine.
*
* \return \c 0 on success, or \c 1 on failure.
* \return \c 0 on success.
* \return \c 1 on failure.
*/
int mbedtls_sha256_self_test( int verbose );

62
include/mbedtls/sha512.h
View file

@ -1,7 +1,9 @@
/**
* \file sha512.h
* \brief This file contains SHA-384 and SHA-512 definitions and functions.
*
* \brief The SHA-384 and SHA-512 cryptographic hash function.
* The Secure Hash Algorithms 384 and 512 (SHA-384 and SHA-512) cryptographic
* hash functions are defined in <em>FIPS 180-4: Secure Hash Standard (SHS)</em>.
*/
/*
* Copyright (C) 2006-2018, Arm Limited (or its affiliates), All Rights Reserved
@ -35,14 +37,14 @@
#define MBEDTLS_ERR_SHA512_HW_ACCEL_FAILED -0x0039 /**< SHA-512 hardware accelerator failed */
#if !defined(MBEDTLS_SHA512_ALT)
// Regular implementation
//
#ifdef __cplusplus
extern "C" {
#endif
#if !defined(MBEDTLS_SHA512_ALT)
// Regular implementation
//
/**
* \brief The SHA-512 context structure.
*
@ -55,12 +57,15 @@ typedef struct
uint64_t total[2]; /*!< The number of Bytes processed. */
uint64_t state[8]; /*!< The intermediate digest state. */
unsigned char buffer[128]; /*!< The data block being processed. */
int is384; /*!< Determines which function to use.
* <ul><li>0: Use SHA-512.</li>
* <li>1: Use SHA-384.</li></ul> */
int is384; /*!< Determines which function to use:
0: Use SHA-512, or 1: Use SHA-384. */
}
mbedtls_sha512_context;
#else /* MBEDTLS_SHA512_ALT */
#include "sha512_alt.h"
#endif /* MBEDTLS_SHA512_ALT */
/**
* \brief This function initializes a SHA-512 context.
*
@ -89,9 +94,8 @@ void mbedtls_sha512_clone( mbedtls_sha512_context *dst,
* calculation.
*
* \param ctx The SHA-512 context to initialize.
* \param is384 Determines which function to use.
* <ul><li>0: Use SHA-512.</li>
* <li>1: Use SHA-384.</li></ul>
* \param is384 Determines which function to use:
* 0: Use SHA-512, or 1: Use SHA-384.
*
* \return \c 0 on success.
*/
@ -148,9 +152,8 @@ int mbedtls_internal_sha512_process( mbedtls_sha512_context *ctx,
* \deprecated Superseded by mbedtls_sha512_starts_ret() in 2.7.0
*
* \param ctx The SHA-512 context to initialize.
* \param is384 Determines which function to use.
* <ul><li>0: Use SHA-512.</li>
* <li>1: Use SHA-384.</li></ul>
* \param is384 Determines which function to use:
* 0: Use SHA-512, or 1: Use SHA-384.
*/
MBEDTLS_DEPRECATED void mbedtls_sha512_starts( mbedtls_sha512_context *ctx,
int is384 );
@ -159,7 +162,7 @@ MBEDTLS_DEPRECATED void mbedtls_sha512_starts( mbedtls_sha512_context *ctx,
* \brief This function feeds an input buffer into an ongoing
* SHA-512 checksum calculation.
*
* \deprecated Superseded by mbedtls_sha512_update_ret() in 2.7.0
* \deprecated Superseded by mbedtls_sha512_update_ret() in 2.7.0.
*
* \param ctx The SHA-512 context.
* \param input The buffer holding the data.
@ -173,7 +176,7 @@ MBEDTLS_DEPRECATED void mbedtls_sha512_update( mbedtls_sha512_context *ctx,
* \brief This function finishes the SHA-512 operation, and writes
* the result to the output buffer.
*
* \deprecated Superseded by mbedtls_sha512_finish_ret() in 2.7.0
* \deprecated Superseded by mbedtls_sha512_finish_ret() in 2.7.0.
*
* \param ctx The SHA-512 context.
* \param output The SHA-384 or SHA-512 checksum result.
@ -186,7 +189,7 @@ MBEDTLS_DEPRECATED void mbedtls_sha512_finish( mbedtls_sha512_context *ctx,
* the ongoing SHA-512 computation. This function is for
* internal use only.
*
* \deprecated Superseded by mbedtls_internal_sha512_process() in 2.7.0
* \deprecated Superseded by mbedtls_internal_sha512_process() in 2.7.0.
*
* \param ctx The SHA-512 context.
* \param data The buffer holding one block of data.
@ -198,18 +201,6 @@ MBEDTLS_DEPRECATED void mbedtls_sha512_process(
#undef MBEDTLS_DEPRECATED
#endif /* !MBEDTLS_DEPRECATED_REMOVED */
#ifdef __cplusplus
}
#endif
#else /* MBEDTLS_SHA512_ALT */
#include "sha512_alt.h"
#endif /* MBEDTLS_SHA512_ALT */
#ifdef __cplusplus
extern "C" {
#endif
/**
* \brief This function calculates the SHA-512 or SHA-384
* checksum of a buffer.
@ -223,9 +214,8 @@ extern "C" {
* \param input The buffer holding the input data.
* \param ilen The length of the input data.
* \param output The SHA-384 or SHA-512 checksum result.
* \param is384 Determines which function to use.
* <ul><li>0: Use SHA-512.</li>
* <li>1: Use SHA-384.</li></ul>
* \param is384 Determines which function to use:
* 0: Use SHA-512, or 1: Use SHA-384.
*
* \return \c 0 on success.
*/
@ -255,9 +245,8 @@ int mbedtls_sha512_ret( const unsigned char *input,
* \param input The buffer holding the data.
* \param ilen The length of the input data.
* \param output The SHA-384 or SHA-512 checksum result.
* \param is384 Determines which function to use.
* <ul><li>0: Use SHA-512.</li>
* <li>1: Use SHA-384.</li></ul>
* \param is384 Determines which function to use:
* 0: Use SHA-512, or 1: Use SHA-384.
*/
MBEDTLS_DEPRECATED void mbedtls_sha512( const unsigned char *input,
size_t ilen,
@ -269,7 +258,8 @@ MBEDTLS_DEPRECATED void mbedtls_sha512( const unsigned char *input,
/**
* \brief The SHA-384 or SHA-512 checkup routine.
*
* \return \c 0 on success, or \c 1 on failure.
* \return \c 0 on success.
* \return \c 1 on failure.
*/
int mbedtls_sha512_self_test( int verbose );

219
include/mbedtls/ssl.h
View file

@ -49,6 +49,15 @@
#endif
#if defined(MBEDTLS_ZLIB_SUPPORT)
#if defined(MBEDTLS_DEPRECATED_WARNING)
#warning "Record compression support via MBEDTLS_ZLIB_SUPPORT is deprecated and will be removed in the next major revision of the library"
#endif
#if defined(MBEDTLS_DEPRECATED_REMOVED)
#error "Record compression support via MBEDTLS_ZLIB_SUPPORT is deprecated and cannot be used if MBEDTLS_DEPRECATED_REMOVED is set"
#endif
#include "zlib.h"
#endif
@ -103,13 +112,14 @@
#define MBEDTLS_ERR_SSL_HELLO_VERIFY_REQUIRED -0x6A80 /**< DTLS client must retry for hello verification */
#define MBEDTLS_ERR_SSL_BUFFER_TOO_SMALL -0x6A00 /**< A buffer is too small to receive or write a message */
#define MBEDTLS_ERR_SSL_NO_USABLE_CIPHERSUITE -0x6980 /**< None of the common ciphersuites is usable (eg, no suitable certificate, see debug messages). */
#define MBEDTLS_ERR_SSL_WANT_READ -0x6900 /**< Connection requires a read call. */
#define MBEDTLS_ERR_SSL_WANT_READ -0x6900 /**< No data of requested type currently available on underlying transport. */
#define MBEDTLS_ERR_SSL_WANT_WRITE -0x6880 /**< Connection requires a write call. */
#define MBEDTLS_ERR_SSL_TIMEOUT -0x6800 /**< The operation timed out. */
#define MBEDTLS_ERR_SSL_CLIENT_RECONNECT -0x6780 /**< The client initiated a reconnect from the same port. */
#define MBEDTLS_ERR_SSL_UNEXPECTED_RECORD -0x6700 /**< Record header looks valid but is not expected. */
#define MBEDTLS_ERR_SSL_NON_FATAL -0x6680 /**< The alert message received indicates a non-fatal error. */
#define MBEDTLS_ERR_SSL_INVALID_VERIFY_HASH -0x6600 /**< Couldn't set the hash for verifying CertificateVerify */
#define MBEDTLS_ERR_SSL_CONTINUE_PROCESSING -0x6580 /**< Internal-only message signaling that further message-processing should be done */
/*
* Various constants
@ -673,10 +683,18 @@ struct mbedtls_ssl_config
#endif
#if defined(MBEDTLS_KEY_EXCHANGE__SOME__PSK_ENABLED)
unsigned char *psk; /*!< pre-shared key */
size_t psk_len; /*!< length of the pre-shared key */
unsigned char *psk_identity; /*!< identity for PSK negotiation */
size_t psk_identity_len;/*!< length of identity */
unsigned char *psk; /*!< pre-shared key. This field should
only be set via
mbedtls_ssl_conf_psk() */
size_t psk_len; /*!< length of the pre-shared key. This
field should only be set via
mbedtls_ssl_conf_psk() */
unsigned char *psk_identity; /*!< identity for PSK negotiation. This
field should only be set via
mbedtls_ssl_conf_psk() */
size_t psk_identity_len;/*!< length of identity. This field should
only be set via
mbedtls_ssl_conf_psk() */
#endif
#if defined(MBEDTLS_SSL_ALPN)
@ -971,8 +989,13 @@ void mbedtls_ssl_init( mbedtls_ssl_context *ssl );
* \note No copy of the configuration context is made, it can be
* shared by many mbedtls_ssl_context structures.
*
* \warning Modifying the conf structure after it has been used in this
* function is unsupported!
* \warning The conf structure will be accessed during the session.
* It must not be modified or freed as long as the session
* is active.
*
* \warning This function must be called exactly once per context.
* Calling mbedtls_ssl_setup again is not supported, even
* if no session is active.
*
* \param ssl SSL context
* \param conf SSL configuration to use
@ -1587,6 +1610,10 @@ void mbedtls_ssl_conf_cert_profile( mbedtls_ssl_config *conf,
/**
* \brief Set the data required to verify peer certificate
*
* \note See \c mbedtls_x509_crt_verify() for notes regarding the
* parameters ca_chain (maps to trust_ca for that function)
* and ca_crl.
*
* \param conf SSL configuration
* \param ca_chain trusted CA chain (meaning all fully trusted top-level CAs)
* \param ca_crl trusted CA CRLs
@ -1827,21 +1854,21 @@ void mbedtls_ssl_conf_sig_hashes( mbedtls_ssl_config *conf,
#if defined(MBEDTLS_X509_CRT_PARSE_C)
/**
* \brief Set or reset the hostname to check against the received
* server certificate. It sets the ServerName TLS extension,
* \brief Set or reset the hostname to check against the received
* server certificate. It sets the ServerName TLS extension,
* too, if that extension is enabled. (client-side only)
*
* \param ssl SSL context
* \param hostname the server hostname, may be NULL to clear hostname
* \note Maximum hostname length MBEDTLS_SSL_MAX_HOST_NAME_LEN.
*
* \return 0 if successful, MBEDTLS_ERR_SSL_ALLOC_FAILED on
* allocation failure, MBEDTLS_ERR_SSL_BAD_INPUT_DATA on
* \return 0 if successful, MBEDTLS_ERR_SSL_ALLOC_FAILED on
* allocation failure, MBEDTLS_ERR_SSL_BAD_INPUT_DATA on
* too long input hostname.
*
* Hostname set to the one provided on success (cleared
* when NULL). On allocation failure hostname is cleared.
* when NULL). On allocation failure hostname is cleared.
* On too long input failure, old hostname is unchanged.
*/
int mbedtls_ssl_set_hostname( mbedtls_ssl_context *ssl, const char *hostname );
@ -2275,11 +2302,59 @@ void mbedtls_ssl_conf_renegotiation_period( mbedtls_ssl_config *conf,
#endif /* MBEDTLS_SSL_RENEGOTIATION */
/**
* \brief Return the number of data bytes available to read
* \brief Check if there is data already read from the
* underlying transport but not yet processed.
*
* \param ssl SSL context
*
* \return how many bytes are available in the read buffer
* \return 0 if nothing's pending, 1 otherwise.
*
* \note This is different in purpose and behaviour from
* \c mbedtls_ssl_get_bytes_avail in that it considers
* any kind of unprocessed data, not only unread
* application data. If \c mbedtls_ssl_get_bytes
* returns a non-zero value, this function will
* also signal pending data, but the converse does
* not hold. For example, in DTLS there might be
* further records waiting to be processed from
* the current underlying transport's datagram.
*
* \note If this function returns 1 (data pending), this
* does not imply that a subsequent call to
* \c mbedtls_ssl_read will provide any data;
* e.g., the unprocessed data might turn out
* to be an alert or a handshake message.
*
* \note This function is useful in the following situation:
* If the SSL/TLS module successfully returns from an
* operation - e.g. a handshake or an application record
* read - and you're awaiting incoming data next, you
* must not immediately idle on the underlying transport
* to have data ready, but you need to check the value
* of this function first. The reason is that the desired
* data might already be read but not yet processed.
* If, in contrast, a previous call to the SSL/TLS module
* returned MBEDTLS_ERR_SSL_WANT_READ, it is not necessary
* to call this function, as the latter error code entails
* that all internal data has been processed.
*
*/
int mbedtls_ssl_check_pending( const mbedtls_ssl_context *ssl );
/**
* \brief Return the number of application data bytes
* remaining to be read from the current record.
*
* \param ssl SSL context
*
* \return How many bytes are available in the application
* data record read buffer.
*
* \note When working over a datagram transport, this is
* useful to detect the current datagram's boundary
* in case \c mbedtls_ssl_read has written the maximal
* amount of data fitting into the input buffer.
*
*/
size_t mbedtls_ssl_get_bytes_avail( const mbedtls_ssl_context *ssl );
@ -2394,11 +2469,25 @@ int mbedtls_ssl_get_session( const mbedtls_ssl_context *ssl, mbedtls_ssl_session
* MBEDTLS_ERR_SSL_HELLO_VERIFY_REQUIRED (see below), or
* a specific SSL error code.
*
* If this function returns MBEDTLS_ERR_SSL_WANT_READ, the
* handshake is unfinished and no further data is available
* from the underlying transport. In this case, you must call
* the function again at some later stage.
*
* \note Remarks regarding event-driven DTLS:
* If the function returns MBEDTLS_ERR_SSL_WANT_READ, no datagram
* from the underlying transport layer is currently being processed,
* and it is safe to idle until the timer or the underlying transport
* signal a new event. This is not true for a successful handshake,
* in which case the datagram of the underlying transport that is
* currently being processed might or might not contain further
* DTLS records.
*
* \note If this function returns something other than 0 or
* MBEDTLS_ERR_SSL_WANT_READ/WRITE, then the ssl context
* becomes unusable, and you should either free it or call
* \c mbedtls_ssl_session_reset() on it before re-using it for
* a new connection; the current connection must be closed.
* MBEDTLS_ERR_SSL_WANT_READ/WRITE, you must stop using
* the SSL context for reading or writing, and either free it or
* call \c mbedtls_ssl_session_reset() on it before re-using it
* for a new connection; the current connection must be closed.
*
* \note If DTLS is in use, then you may choose to handle
* MBEDTLS_ERR_SSL_HELLO_VERIFY_REQUIRED specially for logging
@ -2415,10 +2504,10 @@ int mbedtls_ssl_handshake( mbedtls_ssl_context *ssl );
* call this function if state is MBEDTLS_SSL_HANDSHAKE_OVER.
*
* \note If this function returns something other than 0 or
* MBEDTLS_ERR_SSL_WANT_READ/WRITE, then the ssl context
* becomes unusable, and you should either free it or call
* \c mbedtls_ssl_session_reset() on it before re-using it for
* a new connection; the current connection must be closed.
* MBEDTLS_ERR_SSL_WANT_READ/WRITE, you must stop using
* the SSL context for reading or writing, and either free it or
* call \c mbedtls_ssl_session_reset() on it before re-using it
* for a new connection; the current connection must be closed.
*
* \param ssl SSL context
*
@ -2442,10 +2531,10 @@ int mbedtls_ssl_handshake_step( mbedtls_ssl_context *ssl );
* value.
*
* \note If this function returns something other than 0 or
* MBEDTLS_ERR_SSL_WANT_READ/WRITE, then the ssl context
* becomes unusable, and you should either free it or call
* \c mbedtls_ssl_session_reset() on it before re-using it for
* a new connection; the current connection must be closed.
* MBEDTLS_ERR_SSL_WANT_READ/WRITE, you must stop using
* the SSL context for reading or writing, and either free it or
* call \c mbedtls_ssl_session_reset() on it before re-using it
* for a new connection; the current connection must be closed.
*/
int mbedtls_ssl_renegotiate( mbedtls_ssl_context *ssl );
#endif /* MBEDTLS_SSL_RENEGOTIATION */
@ -2457,20 +2546,20 @@ int mbedtls_ssl_renegotiate( mbedtls_ssl_context *ssl );
* \param buf buffer that will hold the data
* \param len maximum number of bytes to read
*
* \return the number of bytes read, or
* 0 for EOF, or
* MBEDTLS_ERR_SSL_WANT_READ or MBEDTLS_ERR_SSL_WANT_WRITE, or
* MBEDTLS_ERR_SSL_CLIENT_RECONNECT (see below), or
* another negative error code.
* \return One of the following:
* - 0 if the read end of the underlying transport was closed,
* - the (positive) number of bytes read, or
* - a negative error code on failure.
*
* \note If this function returns something other than a positive
* value or MBEDTLS_ERR_SSL_WANT_READ/WRITE or
* MBEDTLS_ERR_SSL_CLIENT_RECONNECT, then the ssl context
* becomes unusable, and you should either free it or call
* \c mbedtls_ssl_session_reset() on it before re-using it for
* a new connection; the current connection must be closed.
* If MBEDTLS_ERR_SSL_WANT_READ is returned, no application data
* is available from the underlying transport. In this case,
* the function needs to be called again at some later stage.
*
* \note When this function return MBEDTLS_ERR_SSL_CLIENT_RECONNECT
* If MBEDTLS_ERR_SSL_WANT_WRITE is returned, a write is pending
* but the underlying transport isn't available for writing. In this
* case, the function needs to be called again at some later stage.
*
* When this function return MBEDTLS_ERR_SSL_CLIENT_RECONNECT
* (which can only happen server-side), it means that a client
* is initiating a new connection using the same source port.
* You can either treat that as a connection close and wait
@ -2483,6 +2572,28 @@ int mbedtls_ssl_renegotiate( mbedtls_ssl_context *ssl );
* again. WARNING: not validating the identity of the client
* again, or not transmitting the new identity to the
* application layer, would allow authentication bypass!
*
* \note If this function returns something other than a positive value
* or MBEDTLS_ERR_SSL_WANT_READ/WRITE or MBEDTLS_ERR_SSL_CLIENT_RECONNECT,
* you must stop using the SSL context for reading or writing,
* and either free it or call \c mbedtls_ssl_session_reset() on it
* before re-using it for a new connection; the current connection
* must be closed.
*
* \note Remarks regarding event-driven DTLS:
* - If the function returns MBEDTLS_ERR_SSL_WANT_READ, no datagram
* from the underlying transport layer is currently being processed,
* and it is safe to idle until the timer or the underlying transport
* signal a new event.
* - This function may return MBEDTLS_ERR_SSL_WANT_READ even if data was
* initially available on the underlying transport, as this data may have
* been only e.g. duplicated messages or a renegotiation request.
* Therefore, you must be prepared to receive MBEDTLS_ERR_SSL_WANT_READ even
* when reacting to an incoming-data event from the underlying transport.
* - On success, the datagram of the underlying transport that is currently
* being processed may contain further DTLS records. You should call
* \c mbedtls_ssl_check_pending to check for remaining records.
*
*/
int mbedtls_ssl_read( mbedtls_ssl_context *ssl, unsigned char *buf, size_t len );
@ -2503,15 +2614,17 @@ int mbedtls_ssl_read( mbedtls_ssl_context *ssl, unsigned char *buf, size_t len )
* or MBEDTLS_ERR_SSL_WANT_WRITE or MBEDTLS_ERR_SSL_WANT_READ,
* or another negative error code.
*
* \note If this function returns something other than a positive
* value or MBEDTLS_ERR_SSL_WANT_READ/WRITE, the ssl context
* becomes unusable, and you should either free it or call
* \c mbedtls_ssl_session_reset() on it before re-using it for
* a new connection; the current connection must be closed.
* \note If this function returns something other than a positive value
* or MBEDTLS_ERR_SSL_WANT_READ/WRITE, you must stop using
* the SSL context for reading or writing, and either free it or
* call \c mbedtls_ssl_session_reset() on it before re-using it
* for a new connection; the current connection must be closed.
*
* \note When this function returns MBEDTLS_ERR_SSL_WANT_WRITE/READ,
* it must be called later with the *same* arguments,
* until it returns a positive value.
* until it returns a positive value. When the function returns
* MBEDTLS_ERR_SSL_WANT_WRITE there may be some partial
* data in the output buffer, however this is not yet sent.
*
* \note If the requested length is greater than the maximum
* fragment length (either the built-in limit or the one set
@ -2534,10 +2647,10 @@ int mbedtls_ssl_write( mbedtls_ssl_context *ssl, const unsigned char *buf, size_
* \return 0 if successful, or a specific SSL error code.
*
* \note If this function returns something other than 0 or
* MBEDTLS_ERR_SSL_WANT_READ/WRITE, then the ssl context
* becomes unusable, and you should either free it or call
* \c mbedtls_ssl_session_reset() on it before re-using it for
* a new connection; the current connection must be closed.
* MBEDTLS_ERR_SSL_WANT_READ/WRITE, you must stop using
* the SSL context for reading or writing, and either free it or
* call \c mbedtls_ssl_session_reset() on it before re-using it
* for a new connection; the current connection must be closed.
*/
int mbedtls_ssl_send_alert_message( mbedtls_ssl_context *ssl,
unsigned char level,
@ -2550,10 +2663,10 @@ int mbedtls_ssl_send_alert_message( mbedtls_ssl_context *ssl,
* \return 0 if successful, or a specific SSL error code.
*
* \note If this function returns something other than 0 or
* MBEDTLS_ERR_SSL_WANT_READ/WRITE, then the ssl context
* becomes unusable, and you should either free it or call
* \c mbedtls_ssl_session_reset() on it before re-using it for
* a new connection; the current connection must be closed.
* MBEDTLS_ERR_SSL_WANT_READ/WRITE, you must stop using
* the SSL context for reading or writing, and either free it or
* call \c mbedtls_ssl_session_reset() on it before re-using it
* for a new connection; the current connection must be closed.
*/
int mbedtls_ssl_close_notify( mbedtls_ssl_context *ssl );

3
include/mbedtls/ssl_internal.h
View file

@ -71,6 +71,9 @@
#endif /* MBEDTLS_SSL_PROTO_TLS1 */
#endif /* MBEDTLS_SSL_PROTO_SSL3 */
#define MBEDTLS_SSL_MIN_VALID_MINOR_VERSION MBEDTLS_SSL_MINOR_VERSION_1
#define MBEDTLS_SSL_MIN_VALID_MAJOR_VERSION MBEDTLS_SSL_MAJOR_VERSION_3
/* Determine maximum supported version */
#define MBEDTLS_SSL_MAX_MAJOR_VERSION MBEDTLS_SSL_MAJOR_VERSION_3

4
include/mbedtls/threading.h
View file

@ -96,8 +96,12 @@ extern int (*mbedtls_mutex_unlock)( mbedtls_threading_mutex_t *mutex );
/*
* Global mutexes
*/
#if defined(MBEDTLS_FS_IO)
extern mbedtls_threading_mutex_t mbedtls_threading_readdir_mutex;
#endif
#if defined(MBEDTLS_HAVE_TIME_DATE)
extern mbedtls_threading_mutex_t mbedtls_threading_gmtime_mutex;
#endif
#endif /* MBEDTLS_THREADING_C */
#ifdef __cplusplus

24
include/mbedtls/timing.h
View file

@ -30,16 +30,16 @@
#include MBEDTLS_CONFIG_FILE
#endif
#if !defined(MBEDTLS_TIMING_ALT)
// Regular implementation
//
#include <stdint.h>
#ifdef __cplusplus
extern "C" {
#endif
#if !defined(MBEDTLS_TIMING_ALT)
// Regular implementation
//
/**
* \brief timer structure
*/
@ -58,6 +58,10 @@ typedef struct
uint32_t fin_ms;
} mbedtls_timing_delay_context;
#else /* MBEDTLS_TIMING_ALT */
#include "timing_alt.h"
#endif /* MBEDTLS_TIMING_ALT */
extern volatile int mbedtls_timing_alarmed;
/**
@ -133,18 +137,6 @@ void mbedtls_timing_set_delay( void *data, uint32_t int_ms, uint32_t fin_ms );
*/
int mbedtls_timing_get_delay( void *data );
#ifdef __cplusplus
}
#endif
#else /* MBEDTLS_TIMING_ALT */
#include "timing_alt.h"
#endif /* MBEDTLS_TIMING_ALT */
#ifdef __cplusplus
extern "C" {
#endif
#if defined(MBEDTLS_SELF_TEST)
/**
* \brief Checkup routine

8
include/mbedtls/version.h
View file

@ -39,7 +39,7 @@
* Major, Minor, Patchlevel
*/
#define MBEDTLS_VERSION_MAJOR 2
#define MBEDTLS_VERSION_MINOR 7
#define MBEDTLS_VERSION_MINOR 9
#define MBEDTLS_VERSION_PATCH 0
/**
@ -47,9 +47,9 @@
* MMNNPP00
* Major version | Minor version | Patch version
*/
#define MBEDTLS_VERSION_NUMBER 0x02070000
#define MBEDTLS_VERSION_STRING "2.7.0"
#define MBEDTLS_VERSION_STRING_FULL "mbed TLS 2.7.0"
#define MBEDTLS_VERSION_NUMBER 0x02090000
#define MBEDTLS_VERSION_STRING "2.9.0"
#define MBEDTLS_VERSION_STRING_FULL "mbed TLS 2.9.0"
#if defined(MBEDTLS_VERSION_C)

9
include/mbedtls/x509_crt.h
View file

@ -287,8 +287,15 @@ int mbedtls_x509_crt_verify_info( char *buf, size_t size, const char *prefix,
* used to sign the certificate, CRL verification is skipped
* silently, that is *without* setting any flag.
*
* \note The \c trust_ca list can contain two types of certificates:
* (1) those of trusted root CAs, so that certificates
* chaining up to those CAs will be trusted, and (2)
* self-signed end-entity certificates to be trusted (for
* specific peers you know) - in that case, the self-signed
* certificate doesn't need to have the CA bit set.
*
* \param crt a certificate (chain) to be verified
* \param trust_ca the list of trusted CAs
* \param trust_ca the list of trusted CAs (see note above)
* \param ca_crl the list of CRLs for trusted CAs (see note above)
* \param cn expected Common Name (can be set to
* NULL if the CN must not be verified)

24
include/mbedtls/xtea.h
View file

@ -39,14 +39,14 @@
#define MBEDTLS_ERR_XTEA_INVALID_INPUT_LENGTH -0x0028 /**< The data input has an invalid length. */
#define MBEDTLS_ERR_XTEA_HW_ACCEL_FAILED -0x0029 /**< XTEA hardware accelerator failed. */
#if !defined(MBEDTLS_XTEA_ALT)
// Regular implementation
//
#ifdef __cplusplus
extern "C" {
#endif
#if !defined(MBEDTLS_XTEA_ALT)
// Regular implementation
//
/**
* \brief XTEA context structure
*/
@ -56,6 +56,10 @@ typedef struct
}
mbedtls_xtea_context;
#else /* MBEDTLS_XTEA_ALT */
#include "xtea_alt.h"
#endif /* MBEDTLS_XTEA_ALT */
/**
* \brief Initialize XTEA context
*
@ -115,18 +119,6 @@ int mbedtls_xtea_crypt_cbc( mbedtls_xtea_context *ctx,
unsigned char *output);
#endif /* MBEDTLS_CIPHER_MODE_CBC */
#ifdef __cplusplus
}
#endif
#else /* MBEDTLS_XTEA_ALT */
#include "xtea_alt.h"
#endif /* MBEDTLS_XTEA_ALT */
#ifdef __cplusplus
extern "C" {
#endif
/**
* \brief Checkup routine
*

7
library/CMakeLists.txt
View file

@ -47,6 +47,7 @@ set(src_crypto
pkparse.c
pkwrite.c
platform.c
platform_util.c
ripemd160.c
rsa.c
rsa_internal.c
@ -142,15 +143,15 @@ endif(USE_STATIC_MBEDTLS_LIBRARY)
if(USE_SHARED_MBEDTLS_LIBRARY)
add_library(mbedcrypto SHARED ${src_crypto})
set_target_properties(mbedcrypto PROPERTIES VERSION 2.7.0 SOVERSION 1)
set_target_properties(mbedcrypto PROPERTIES VERSION 2.9.0 SOVERSION 2)
target_link_libraries(mbedcrypto ${libs})
add_library(mbedx509 SHARED ${src_x509})
set_target_properties(mbedx509 PROPERTIES VERSION 2.7.0 SOVERSION 0)
set_target_properties(mbedx509 PROPERTIES VERSION 2.9.0 SOVERSION 0)
target_link_libraries(mbedx509 ${libs} mbedcrypto)
add_library(mbedtls SHARED ${src_tls})
set_target_properties(mbedtls PROPERTIES VERSION 2.7.0 SOVERSION 10)
set_target_properties(mbedtls PROPERTIES VERSION 2.9.0 SOVERSION 10)
target_link_libraries(mbedtls ${libs} mbedx509)
install(TARGETS mbedtls mbedx509 mbedcrypto

40
library/Makefile
View file

@ -33,11 +33,14 @@ endif
SOEXT_TLS=so.10
SOEXT_X509=so.0
SOEXT_CRYPTO=so.1
SOEXT_CRYPTO=so.2
DLEXT=so
# OSX shared library extension:
# DLEXT=dylib
# Set DLEXT=dylib to compile as a shared library for Mac OS X
DLEXT ?= so
# Set AR_DASH= (empty string) to use an ar implentation that does not accept
# the - prefix for command line options (e.g. llvm-ar)
AR_DASH ?= -
# Windows shared library extension:
ifdef WINDOWS_BUILD
@ -60,10 +63,11 @@ OBJS_CRYPTO= aes.o aesni.o arc4.o \
padlock.o pem.o pk.o \
pk_wrap.o pkcs12.o pkcs5.o \
pkparse.o pkwrite.o platform.o \
ripemd160.o rsa_internal.o rsa.o \
sha1.o sha256.o sha512.o \
threading.o timing.o version.o \
version_features.o xtea.o
platform_util.o ripemd160.o rsa_internal.o \
rsa.o sha1.o sha256.o \
sha512.o threading.o timing.o \
version.o version_features.o \
xtea.o
OBJS_X509= certs.o pkcs11.o x509.o \
x509_create.o x509_crl.o x509_crt.o \
@ -92,9 +96,9 @@ shared: libmbedcrypto.$(DLEXT) libmbedx509.$(DLEXT) libmbedtls.$(DLEXT)
# tls
libmbedtls.a: $(OBJS_TLS)
echo " AR $@"
$(AR) -rc $@ $(OBJS_TLS)
$(AR) $(AR_DASH)rc $@ $(OBJS_TLS)
echo " RL $@"
$(AR) -s $@
$(AR) $(AR_DASH)s $@
libmbedtls.$(SOEXT_TLS): $(OBJS_TLS) libmbedx509.so
echo " LD $@"
@ -104,9 +108,9 @@ libmbedtls.so: libmbedtls.$(SOEXT_TLS)
echo " LN $@ -> $<"
ln -sf $< $@
libmbedtls.dylib: $(OBJS_TLS)
libmbedtls.dylib: $(OBJS_TLS) libmbedx509.dylib
echo " LD $@"
$(CC) -dynamiclib $(LOCAL_LDFLAGS) $(LDFLAGS) -o $@ $(OBJS_TLS)
$(CC) -dynamiclib -L. -lmbedcrypto -lmbedx509 $(LOCAL_LDFLAGS) $(LDFLAGS) -o $@ $(OBJS_TLS)
libmbedtls.dll: $(OBJS_TLS) libmbedx509.dll
echo " LD $@"
@ -115,9 +119,9 @@ libmbedtls.dll: $(OBJS_TLS) libmbedx509.dll
# x509
libmbedx509.a: $(OBJS_X509)
echo " AR $@"
$(AR) -rc $@ $(OBJS_X509)
$(AR) $(AR_DASH)rc $@ $(OBJS_X509)
echo " RL $@"
$(AR) -s $@
$(AR) $(AR_DASH)s $@
libmbedx509.$(SOEXT_X509): $(OBJS_X509) libmbedcrypto.so
echo " LD $@"
@ -127,9 +131,9 @@ libmbedx509.so: libmbedx509.$(SOEXT_X509)
echo " LN $@ -> $<"
ln -sf $< $@
libmbedx509.dylib: $(OBJS_X509)
libmbedx509.dylib: $(OBJS_X509) libmbedcrypto.dylib
echo " LD $@"
$(CC) -dynamiclib $(LOCAL_LDFLAGS) $(LDFLAGS) -o $@ $(OBJS_X509)
$(CC) -dynamiclib -L. -lmbedcrypto $(LOCAL_LDFLAGS) $(LDFLAGS) -o $@ $(OBJS_X509)
libmbedx509.dll: $(OBJS_X509) libmbedcrypto.dll
echo " LD $@"
@ -138,9 +142,9 @@ libmbedx509.dll: $(OBJS_X509) libmbedcrypto.dll
# crypto
libmbedcrypto.a: $(OBJS_CRYPTO)
echo " AR $@"
$(AR) -rc $@ $(OBJS_CRYPTO)
$(AR) $(AR_DASH)rc $@ $(OBJS_CRYPTO)
echo " RL $@"
$(AR) -s $@
$(AR) $(AR_DASH)s $@
libmbedcrypto.$(SOEXT_CRYPTO): $(OBJS_CRYPTO)
echo " LD $@"

152
library/aes.c
View file

@ -36,6 +36,7 @@
#include <string.h>
#include "mbedtls/aes.h"
#include "mbedtls/platform_util.h"
#if defined(MBEDTLS_PADLOCK_C)
#include "mbedtls/padlock.h"
#endif
@ -54,11 +55,6 @@
#if !defined(MBEDTLS_AES_ALT)
/* Implementation that should never be optimized out by the compiler */
static void mbedtls_zeroize( void *v, size_t n ) {
volatile unsigned char *p = (unsigned char*)v; while( n-- ) *p++ = 0;
}
/*
* 32-bit integer manipulation macros (little endian)
*/
@ -201,6 +197,8 @@ static const unsigned char FSb[256] =
static const uint32_t FT0[256] = { FT };
#undef V
#if !defined(MBEDTLS_AES_FEWER_TABLES)
#define V(a,b,c,d) 0x##b##c##d##a
static const uint32_t FT1[256] = { FT };
#undef V
@ -213,6 +211,8 @@ static const uint32_t FT2[256] = { FT };
static const uint32_t FT3[256] = { FT };
#undef V
#endif /* !MBEDTLS_AES_FEWER_TABLES */
#undef FT
/*
@ -328,6 +328,8 @@ static const unsigned char RSb[256] =
static const uint32_t RT0[256] = { RT };
#undef V
#if !defined(MBEDTLS_AES_FEWER_TABLES)
#define V(a,b,c,d) 0x##b##c##d##a
static const uint32_t RT1[256] = { RT };
#undef V
@ -340,6 +342,8 @@ static const uint32_t RT2[256] = { RT };
static const uint32_t RT3[256] = { RT };
#undef V
#endif /* !MBEDTLS_AES_FEWER_TABLES */
#undef RT
/*
@ -359,18 +363,22 @@ static const uint32_t RCON[10] =
*/
static unsigned char FSb[256];
static uint32_t FT0[256];
#if !defined(MBEDTLS_AES_FEWER_TABLES)
static uint32_t FT1[256];
static uint32_t FT2[256];
static uint32_t FT3[256];
#endif /* !MBEDTLS_AES_FEWER_TABLES */
/*
* Reverse S-box & tables
*/
static unsigned char RSb[256];
static uint32_t RT0[256];
#if !defined(MBEDTLS_AES_FEWER_TABLES)
static uint32_t RT1[256];
static uint32_t RT2[256];
static uint32_t RT3[256];
#endif /* !MBEDTLS_AES_FEWER_TABLES */
/*
* Round constants
@ -445,9 +453,11 @@ static void aes_gen_tables( void )
( (uint32_t) x << 16 ) ^
( (uint32_t) z << 24 );
#if !defined(MBEDTLS_AES_FEWER_TABLES)
FT1[i] = ROTL8( FT0[i] );
FT2[i] = ROTL8( FT1[i] );
FT3[i] = ROTL8( FT2[i] );
#endif /* !MBEDTLS_AES_FEWER_TABLES */
x = RSb[i];
@ -456,14 +466,48 @@ static void aes_gen_tables( void )
( (uint32_t) MUL( 0x0D, x ) << 16 ) ^
( (uint32_t) MUL( 0x0B, x ) << 24 );
#if !defined(MBEDTLS_AES_FEWER_TABLES)
RT1[i] = ROTL8( RT0[i] );
RT2[i] = ROTL8( RT1[i] );
RT3[i] = ROTL8( RT2[i] );
#endif /* !MBEDTLS_AES_FEWER_TABLES */
}
}
#undef ROTL8
#endif /* MBEDTLS_AES_ROM_TABLES */
#if defined(MBEDTLS_AES_FEWER_TABLES)
#define ROTL8(x) ( (uint32_t)( ( x ) << 8 ) + (uint32_t)( ( x ) >> 24 ) )
#define ROTL16(x) ( (uint32_t)( ( x ) << 16 ) + (uint32_t)( ( x ) >> 16 ) )
#define ROTL24(x) ( (uint32_t)( ( x ) << 24 ) + (uint32_t)( ( x ) >> 8 ) )
#define AES_RT0(idx) RT0[idx]
#define AES_RT1(idx) ROTL8( RT0[idx] )
#define AES_RT2(idx) ROTL16( RT0[idx] )
#define AES_RT3(idx) ROTL24( RT0[idx] )
#define AES_FT0(idx) FT0[idx]
#define AES_FT1(idx) ROTL8( FT0[idx] )
#define AES_FT2(idx) ROTL16( FT0[idx] )
#define AES_FT3(idx) ROTL24( FT0[idx] )
#else /* MBEDTLS_AES_FEWER_TABLES */
#define AES_RT0(idx) RT0[idx]
#define AES_RT1(idx) RT1[idx]
#define AES_RT2(idx) RT2[idx]
#define AES_RT3(idx) RT3[idx]
#define AES_FT0(idx) FT0[idx]
#define AES_FT1(idx) FT1[idx]
#define AES_FT2(idx) FT2[idx]
#define AES_FT3(idx) FT3[idx]
#endif /* MBEDTLS_AES_FEWER_TABLES */
void mbedtls_aes_init( mbedtls_aes_context *ctx )
{
memset( ctx, 0, sizeof( mbedtls_aes_context ) );
@ -474,7 +518,7 @@ void mbedtls_aes_free( mbedtls_aes_context *ctx )
if( ctx == NULL )
return;
mbedtls_zeroize( ctx, sizeof( mbedtls_aes_context ) );
mbedtls_platform_zeroize( ctx, sizeof( mbedtls_aes_context ) );
}
/*
@ -641,10 +685,10 @@ int mbedtls_aes_setkey_dec( mbedtls_aes_context *ctx, const unsigned char *key,
{
for( j = 0; j < 4; j++, SK++ )
{
*RK++ = RT0[ FSb[ ( *SK ) & 0xFF ] ] ^
RT1[ FSb[ ( *SK >> 8 ) & 0xFF ] ] ^
RT2[ FSb[ ( *SK >> 16 ) & 0xFF ] ] ^
RT3[ FSb[ ( *SK >> 24 ) & 0xFF ] ];
*RK++ = AES_RT0( FSb[ ( *SK ) & 0xFF ] ) ^
AES_RT1( FSb[ ( *SK >> 8 ) & 0xFF ] ) ^
AES_RT2( FSb[ ( *SK >> 16 ) & 0xFF ] ) ^
AES_RT3( FSb[ ( *SK >> 24 ) & 0xFF ] );
}
}
@ -660,50 +704,50 @@ exit:
}
#endif /* !MBEDTLS_AES_SETKEY_DEC_ALT */
#define AES_FROUND(X0,X1,X2,X3,Y0,Y1,Y2,Y3) \
{ \
X0 = *RK++ ^ FT0[ ( Y0 ) & 0xFF ] ^ \
FT1[ ( Y1 >> 8 ) & 0xFF ] ^ \
FT2[ ( Y2 >> 16 ) & 0xFF ] ^ \
FT3[ ( Y3 >> 24 ) & 0xFF ]; \
\
X1 = *RK++ ^ FT0[ ( Y1 ) & 0xFF ] ^ \
FT1[ ( Y2 >> 8 ) & 0xFF ] ^ \
FT2[ ( Y3 >> 16 ) & 0xFF ] ^ \
FT3[ ( Y0 >> 24 ) & 0xFF ]; \
\
X2 = *RK++ ^ FT0[ ( Y2 ) & 0xFF ] ^ \
FT1[ ( Y3 >> 8 ) & 0xFF ] ^ \
FT2[ ( Y0 >> 16 ) & 0xFF ] ^ \
FT3[ ( Y1 >> 24 ) & 0xFF ]; \
\
X3 = *RK++ ^ FT0[ ( Y3 ) & 0xFF ] ^ \
FT1[ ( Y0 >> 8 ) & 0xFF ] ^ \
FT2[ ( Y1 >> 16 ) & 0xFF ] ^ \
FT3[ ( Y2 >> 24 ) & 0xFF ]; \
#define AES_FROUND(X0,X1,X2,X3,Y0,Y1,Y2,Y3) \
{ \
X0 = *RK++ ^ AES_FT0( ( Y0 ) & 0xFF ) ^ \
AES_FT1( ( Y1 >> 8 ) & 0xFF ) ^ \
AES_FT2( ( Y2 >> 16 ) & 0xFF ) ^ \
AES_FT3( ( Y3 >> 24 ) & 0xFF ); \
\
X1 = *RK++ ^ AES_FT0( ( Y1 ) & 0xFF ) ^ \
AES_FT1( ( Y2 >> 8 ) & 0xFF ) ^ \
AES_FT2( ( Y3 >> 16 ) & 0xFF ) ^ \
AES_FT3( ( Y0 >> 24 ) & 0xFF ); \
\
X2 = *RK++ ^ AES_FT0( ( Y2 ) & 0xFF ) ^ \
AES_FT1( ( Y3 >> 8 ) & 0xFF ) ^ \
AES_FT2( ( Y0 >> 16 ) & 0xFF ) ^ \
AES_FT3( ( Y1 >> 24 ) & 0xFF ); \
\
X3 = *RK++ ^ AES_FT0( ( Y3 ) & 0xFF ) ^ \
AES_FT1( ( Y0 >> 8 ) & 0xFF ) ^ \
AES_FT2( ( Y1 >> 16 ) & 0xFF ) ^ \
AES_FT3( ( Y2 >> 24 ) & 0xFF ); \
}
#define AES_RROUND(X0,X1,X2,X3,Y0,Y1,Y2,Y3) \
{ \
X0 = *RK++ ^ RT0[ ( Y0 ) & 0xFF ] ^ \
RT1[ ( Y3 >> 8 ) & 0xFF ] ^ \
RT2[ ( Y2 >> 16 ) & 0xFF ] ^ \
RT3[ ( Y1 >> 24 ) & 0xFF ]; \
\
X1 = *RK++ ^ RT0[ ( Y1 ) & 0xFF ] ^ \
RT1[ ( Y0 >> 8 ) & 0xFF ] ^ \
RT2[ ( Y3 >> 16 ) & 0xFF ] ^ \
RT3[ ( Y2 >> 24 ) & 0xFF ]; \
\
X2 = *RK++ ^ RT0[ ( Y2 ) & 0xFF ] ^ \
RT1[ ( Y1 >> 8 ) & 0xFF ] ^ \
RT2[ ( Y0 >> 16 ) & 0xFF ] ^ \
RT3[ ( Y3 >> 24 ) & 0xFF ]; \
\
X3 = *RK++ ^ RT0[ ( Y3 ) & 0xFF ] ^ \
RT1[ ( Y2 >> 8 ) & 0xFF ] ^ \
RT2[ ( Y1 >> 16 ) & 0xFF ] ^ \
RT3[ ( Y0 >> 24 ) & 0xFF ]; \
#define AES_RROUND(X0,X1,X2,X3,Y0,Y1,Y2,Y3) \
{ \
X0 = *RK++ ^ AES_RT0( ( Y0 ) & 0xFF ) ^ \
AES_RT1( ( Y3 >> 8 ) & 0xFF ) ^ \
AES_RT2( ( Y2 >> 16 ) & 0xFF ) ^ \
AES_RT3( ( Y1 >> 24 ) & 0xFF ); \
\
X1 = *RK++ ^ AES_RT0( ( Y1 ) & 0xFF ) ^ \
AES_RT1( ( Y0 >> 8 ) & 0xFF ) ^ \
AES_RT2( ( Y3 >> 16 ) & 0xFF ) ^ \
AES_RT3( ( Y2 >> 24 ) & 0xFF ); \
\
X2 = *RK++ ^ AES_RT0( ( Y2 ) & 0xFF ) ^ \
AES_RT1( ( Y1 >> 8 ) & 0xFF ) ^ \
AES_RT2( ( Y0 >> 16 ) & 0xFF ) ^ \
AES_RT3( ( Y3 >> 24 ) & 0xFF ); \
\
X3 = *RK++ ^ AES_RT0( ( Y3 ) & 0xFF ) ^ \
AES_RT1( ( Y2 >> 8 ) & 0xFF ) ^ \
AES_RT2( ( Y1 >> 16 ) & 0xFF ) ^ \
AES_RT3( ( Y0 >> 24 ) & 0xFF ); \
}
/*
@ -765,12 +809,14 @@ int mbedtls_internal_aes_encrypt( mbedtls_aes_context *ctx,
}
#endif /* !MBEDTLS_AES_ENCRYPT_ALT */
#if !defined(MBEDTLS_DEPRECATED_REMOVED)
void mbedtls_aes_encrypt( mbedtls_aes_context *ctx,
const unsigned char input[16],
unsigned char output[16] )
{
mbedtls_internal_aes_encrypt( ctx, input, output );
}
#endif /* !MBEDTLS_DEPRECATED_REMOVED */
/*
* AES-ECB block decryption
@ -831,12 +877,14 @@ int mbedtls_internal_aes_decrypt( mbedtls_aes_context *ctx,
}
#endif /* !MBEDTLS_AES_DECRYPT_ALT */
#if !defined(MBEDTLS_DEPRECATED_REMOVED)
void mbedtls_aes_decrypt( mbedtls_aes_context *ctx,
const unsigned char input[16],
unsigned char output[16] )
{
mbedtls_internal_aes_decrypt( ctx, input, output );
}
#endif /* !MBEDTLS_DEPRECATED_REMOVED */
/*
* AES-ECB block encryption/decryption

6
library/aesni.c
View file

@ -32,6 +32,12 @@
#if defined(MBEDTLS_AESNI_C)
#if defined(__has_feature)
#if __has_feature(memory_sanitizer)
#warning "MBEDTLS_AESNI_C is known to cause spurious error reports with some memory sanitizers as they do not understand the assembly code."
#endif
#endif
#include "mbedtls/aesni.h"
#include <string.h>

8
library/arc4.c
View file

@ -33,6 +33,7 @@
#if defined(MBEDTLS_ARC4_C)
#include "mbedtls/arc4.h"
#include "mbedtls/platform_util.h"
#include <string.h>
@ -47,11 +48,6 @@
#if !defined(MBEDTLS_ARC4_ALT)
/* Implementation that should never be optimized out by the compiler */
static void mbedtls_zeroize( void *v, size_t n ) {
volatile unsigned char *p = (unsigned char*)v; while( n-- ) *p++ = 0;
}
void mbedtls_arc4_init( mbedtls_arc4_context *ctx )
{
memset( ctx, 0, sizeof( mbedtls_arc4_context ) );
@ -62,7 +58,7 @@ void mbedtls_arc4_free( mbedtls_arc4_context *ctx )
if( ctx == NULL )
return;
mbedtls_zeroize( ctx, sizeof( mbedtls_arc4_context ) );
mbedtls_platform_zeroize( ctx, sizeof( mbedtls_arc4_context ) );
}
/*

10
library/asn1parse.c
View file

@ -28,6 +28,7 @@
#if defined(MBEDTLS_ASN1_PARSE_C)
#include "mbedtls/asn1.h"
#include "mbedtls/platform_util.h"
#include <string.h>
@ -43,11 +44,6 @@
#define mbedtls_free free
#endif
/* Implementation that should never be optimized out by the compiler */
static void mbedtls_zeroize( void *v, size_t n ) {
volatile unsigned char *p = (unsigned char*)v; while( n-- ) *p++ = 0;
}
/*
* ASN.1 DER decoding routines
*/
@ -313,7 +309,7 @@ int mbedtls_asn1_get_alg( unsigned char **p,
if( *p == end )
{
mbedtls_zeroize( params, sizeof(mbedtls_asn1_buf) );
mbedtls_platform_zeroize( params, sizeof(mbedtls_asn1_buf) );
return( 0 );
}
@ -358,7 +354,7 @@ void mbedtls_asn1_free_named_data( mbedtls_asn1_named_data *cur )
mbedtls_free( cur->oid.p );
mbedtls_free( cur->val.p );
mbedtls_zeroize( cur, sizeof( mbedtls_asn1_named_data ) );
mbedtls_platform_zeroize( cur, sizeof( mbedtls_asn1_named_data ) );
}
void mbedtls_asn1_free_named_data_list( mbedtls_asn1_named_data **head )

4
library/asn1write.c
View file

@ -232,10 +232,6 @@ int mbedtls_asn1_write_int( unsigned char **p, unsigned char *start, int val )
int ret;
size_t len = 0;
// TODO negative values and values larger than 128
// DER format assumes 2s complement for numbers, so the leftmost bit
// should be 0 for positive numbers and 1 for negative numbers.
//
if( *p - start < 1 )
return( MBEDTLS_ERR_ASN1_BUF_TOO_SMALL );

155
library/bignum.c
View file

@ -45,6 +45,7 @@
#include "mbedtls/bignum.h"
#include "mbedtls/bn_mul.h"
#include "mbedtls/platform_util.h"
#include <string.h>
@ -58,16 +59,6 @@
#define mbedtls_free free
#endif
/* Implementation that should never be optimized out by the compiler */
static void mbedtls_mpi_zeroize( mbedtls_mpi_uint *v, size_t n ) {
volatile mbedtls_mpi_uint *p = v; while( n-- ) *p++ = 0;
}
/* Implementation that should never be optimized out by the compiler */
static void mbedtls_zeroize( void *v, size_t n ) {
volatile unsigned char *p = v; while( n-- ) *p++ = 0;
}
#define ciL (sizeof(mbedtls_mpi_uint)) /* chars in limb */
#define biL (ciL << 3) /* bits in limb */
#define biH (ciL << 2) /* half limb size */
@ -81,6 +72,12 @@ static void mbedtls_zeroize( void *v, size_t n ) {
#define BITS_TO_LIMBS(i) ( (i) / biL + ( (i) % biL != 0 ) )
#define CHARS_TO_LIMBS(i) ( (i) / ciL + ( (i) % ciL != 0 ) )
/* Implementation that should never be optimized out by the compiler */
static void mbedtls_mpi_zeroize( mbedtls_mpi_uint *v, size_t n )
{
mbedtls_platform_zeroize( v, ciL * n );
}
/*
* Initialize one MPI
*/
@ -184,7 +181,7 @@ int mbedtls_mpi_shrink( mbedtls_mpi *X, size_t nblimbs )
*/
int mbedtls_mpi_copy( mbedtls_mpi *X, const mbedtls_mpi *Y )
{
int ret;
int ret = 0;
size_t i;
if( X == Y )
@ -203,9 +200,15 @@ int mbedtls_mpi_copy( mbedtls_mpi *X, const mbedtls_mpi *Y )
X->s = Y->s;
MBEDTLS_MPI_CHK( mbedtls_mpi_grow( X, i ) );
if( X->n < i )
{
MBEDTLS_MPI_CHK( mbedtls_mpi_grow( X, i ) );
}
else
{
memset( X->p + i, 0, ( X->n - i ) * ciL );
}
memset( X->p, 0, X->n * ciL );
memcpy( X->p, Y->p, i * ciL );
cleanup:
@ -963,7 +966,7 @@ static void mpi_sub_hlp( size_t n, mbedtls_mpi_uint *s, mbedtls_mpi_uint *d )
while( c != 0 )
{
z = ( *d < c ); *d -= c;
c = z; i++; d++;
c = z; d++;
}
}
@ -1201,8 +1204,8 @@ int mbedtls_mpi_mul_mpi( mbedtls_mpi *X, const mbedtls_mpi *A, const mbedtls_mpi
MBEDTLS_MPI_CHK( mbedtls_mpi_grow( X, i + j ) );
MBEDTLS_MPI_CHK( mbedtls_mpi_lset( X, 0 ) );
for( i++; j > 0; j-- )
mpi_mul_hlp( i - 1, A->p, X->p + j - 1, B->p[j - 1] );
for( ; j > 0; j-- )
mpi_mul_hlp( i, A->p, X->p + j - 1, B->p[j - 1] );
X->s = A->s * B->s;
@ -1623,7 +1626,7 @@ int mbedtls_mpi_exp_mod( mbedtls_mpi *X, const mbedtls_mpi *A, const mbedtls_mpi
mbedtls_mpi RR, T, W[ 2 << MBEDTLS_MPI_WINDOW_SIZE ], Apos;
int neg;
if( mbedtls_mpi_cmp_int( N, 0 ) < 0 || ( N->p[0] & 1 ) == 0 )
if( mbedtls_mpi_cmp_int( N, 0 ) <= 0 || ( N->p[0] & 1 ) == 0 )
return( MBEDTLS_ERR_MPI_BAD_INPUT_DATA );
if( mbedtls_mpi_cmp_int( E, 0 ) < 0 )
@ -1891,7 +1894,7 @@ int mbedtls_mpi_fill_random( mbedtls_mpi *X, size_t size,
MBEDTLS_MPI_CHK( mbedtls_mpi_read_binary( X, buf, size ) );
cleanup:
mbedtls_zeroize( buf, sizeof( buf ) );
mbedtls_platform_zeroize( buf, sizeof( buf ) );
return( ret );
}
@ -2188,12 +2191,23 @@ int mbedtls_mpi_is_prime( const mbedtls_mpi *X,
/*
* Prime number generation
*
* If dh_flag is 0 and nbits is at least 1024, then the procedure
* follows the RSA probably-prime generation method of FIPS 186-4.
* NB. FIPS 186-4 only allows the specific bit lengths of 1024 and 1536.
*/
int mbedtls_mpi_gen_prime( mbedtls_mpi *X, size_t nbits, int dh_flag,
int (*f_rng)(void *, unsigned char *, size_t),
void *p_rng )
{
int ret;
#ifdef MBEDTLS_HAVE_INT64
// ceil(2^63.5)
#define CEIL_MAXUINT_DIV_SQRT2 0xb504f333f9de6485ULL
#else
// ceil(2^31.5)
#define CEIL_MAXUINT_DIV_SQRT2 0xb504f334U
#endif
int ret = MBEDTLS_ERR_MPI_NOT_ACCEPTABLE;
size_t k, n;
mbedtls_mpi_uint r;
mbedtls_mpi Y;
@ -2205,69 +2219,66 @@ int mbedtls_mpi_gen_prime( mbedtls_mpi *X, size_t nbits, int dh_flag,
n = BITS_TO_LIMBS( nbits );
MBEDTLS_MPI_CHK( mbedtls_mpi_fill_random( X, n * ciL, f_rng, p_rng ) );
k = mbedtls_mpi_bitlen( X );
if( k > nbits ) MBEDTLS_MPI_CHK( mbedtls_mpi_shift_r( X, k - nbits + 1 ) );
mbedtls_mpi_set_bit( X, nbits-1, 1 );
X->p[0] |= 1;
if( dh_flag == 0 )
while( 1 )
{
while( ( ret = mbedtls_mpi_is_prime( X, f_rng, p_rng ) ) != 0 )
MBEDTLS_MPI_CHK( mbedtls_mpi_fill_random( X, n * ciL, f_rng, p_rng ) );
/* make sure generated number is at least (nbits-1)+0.5 bits (FIPS 186-4 §B.3.3 steps 4.4, 5.5) */
if( X->p[n-1] < CEIL_MAXUINT_DIV_SQRT2 ) continue;
k = n * biL;
if( k > nbits ) MBEDTLS_MPI_CHK( mbedtls_mpi_shift_r( X, k - nbits ) );
X->p[0] |= 1;
if( dh_flag == 0 )
{
ret = mbedtls_mpi_is_prime( X, f_rng, p_rng );
if( ret != MBEDTLS_ERR_MPI_NOT_ACCEPTABLE )
goto cleanup;
MBEDTLS_MPI_CHK( mbedtls_mpi_add_int( X, X, 2 ) );
}
}
else
{
/*
* An necessary condition for Y and X = 2Y + 1 to be prime
* is X = 2 mod 3 (which is equivalent to Y = 2 mod 3).
* Make sure it is satisfied, while keeping X = 3 mod 4
*/
X->p[0] |= 2;
MBEDTLS_MPI_CHK( mbedtls_mpi_mod_int( &r, X, 3 ) );
if( r == 0 )
MBEDTLS_MPI_CHK( mbedtls_mpi_add_int( X, X, 8 ) );
else if( r == 1 )
MBEDTLS_MPI_CHK( mbedtls_mpi_add_int( X, X, 4 ) );
/* Set Y = (X-1) / 2, which is X / 2 because X is odd */
MBEDTLS_MPI_CHK( mbedtls_mpi_copy( &Y, X ) );
MBEDTLS_MPI_CHK( mbedtls_mpi_shift_r( &Y, 1 ) );
while( 1 )
else
{
/*
* First, check small factors for X and Y
* before doing Miller-Rabin on any of them
* An necessary condition for Y and X = 2Y + 1 to be prime
* is X = 2 mod 3 (which is equivalent to Y = 2 mod 3).
* Make sure it is satisfied, while keeping X = 3 mod 4
*/
if( ( ret = mpi_check_small_factors( X ) ) == 0 &&
( ret = mpi_check_small_factors( &Y ) ) == 0 &&
( ret = mpi_miller_rabin( X, f_rng, p_rng ) ) == 0 &&
( ret = mpi_miller_rabin( &Y, f_rng, p_rng ) ) == 0 )
X->p[0] |= 2;
MBEDTLS_MPI_CHK( mbedtls_mpi_mod_int( &r, X, 3 ) );
if( r == 0 )
MBEDTLS_MPI_CHK( mbedtls_mpi_add_int( X, X, 8 ) );
else if( r == 1 )
MBEDTLS_MPI_CHK( mbedtls_mpi_add_int( X, X, 4 ) );
/* Set Y = (X-1) / 2, which is X / 2 because X is odd */
MBEDTLS_MPI_CHK( mbedtls_mpi_copy( &Y, X ) );
MBEDTLS_MPI_CHK( mbedtls_mpi_shift_r( &Y, 1 ) );
while( 1 )
{
break;
/*
* First, check small factors for X and Y
* before doing Miller-Rabin on any of them
*/
if( ( ret = mpi_check_small_factors( X ) ) == 0 &&
( ret = mpi_check_small_factors( &Y ) ) == 0 &&
( ret = mpi_miller_rabin( X, f_rng, p_rng ) ) == 0 &&
( ret = mpi_miller_rabin( &Y, f_rng, p_rng ) ) == 0 )
goto cleanup;
if( ret != MBEDTLS_ERR_MPI_NOT_ACCEPTABLE )
goto cleanup;
/*
* Next candidates. We want to preserve Y = (X-1) / 2 and
* Y = 1 mod 2 and Y = 2 mod 3 (eq X = 3 mod 4 and X = 2 mod 3)
* so up Y by 6 and X by 12.
*/
MBEDTLS_MPI_CHK( mbedtls_mpi_add_int( X, X, 12 ) );
MBEDTLS_MPI_CHK( mbedtls_mpi_add_int( &Y, &Y, 6 ) );
}
if( ret != MBEDTLS_ERR_MPI_NOT_ACCEPTABLE )
goto cleanup;
/*
* Next candidates. We want to preserve Y = (X-1) / 2 and
* Y = 1 mod 2 and Y = 2 mod 3 (eq X = 3 mod 4 and X = 2 mod 3)
* so up Y by 6 and X by 12.
*/
MBEDTLS_MPI_CHK( mbedtls_mpi_add_int( X, X, 12 ) );
MBEDTLS_MPI_CHK( mbedtls_mpi_add_int( &Y, &Y, 6 ) );
}
}

8
library/blowfish.c
View file

@ -34,16 +34,12 @@
#if defined(MBEDTLS_BLOWFISH_C)
#include "mbedtls/blowfish.h"
#include "mbedtls/platform_util.h"
#include <string.h>
#if !defined(MBEDTLS_BLOWFISH_ALT)
/* Implementation that should never be optimized out by the compiler */
static void mbedtls_zeroize( void *v, size_t n ) {
volatile unsigned char *p = (unsigned char*)v; while( n-- ) *p++ = 0;
}
/*
* 32-bit integer manipulation macros (big endian)
*/
@ -165,7 +161,7 @@ void mbedtls_blowfish_free( mbedtls_blowfish_context *ctx )
if( ctx == NULL )
return;
mbedtls_zeroize( ctx, sizeof( mbedtls_blowfish_context ) );
mbedtls_platform_zeroize( ctx, sizeof( mbedtls_blowfish_context ) );
}
/*

8
library/camellia.c
View file

@ -34,6 +34,7 @@
#if defined(MBEDTLS_CAMELLIA_C)
#include "mbedtls/camellia.h"
#include "mbedtls/platform_util.h"
#include <string.h>
@ -48,11 +49,6 @@
#if !defined(MBEDTLS_CAMELLIA_ALT)
/* Implementation that should never be optimized out by the compiler */
static void mbedtls_zeroize( void *v, size_t n ) {
volatile unsigned char *p = (unsigned char*)v; while( n-- ) *p++ = 0;
}
/*
* 32-bit integer manipulation macros (big endian)
*/
@ -333,7 +329,7 @@ void mbedtls_camellia_free( mbedtls_camellia_context *ctx )
if( ctx == NULL )
return;
mbedtls_zeroize( ctx, sizeof( mbedtls_camellia_context ) );
mbedtls_platform_zeroize( ctx, sizeof( mbedtls_camellia_context ) );
}
/*

10
library/ccm.c
View file

@ -37,6 +37,7 @@
#if defined(MBEDTLS_CCM_C)
#include "mbedtls/ccm.h"
#include "mbedtls/platform_util.h"
#include <string.h>
@ -51,11 +52,6 @@
#if !defined(MBEDTLS_CCM_ALT)
/* Implementation that should never be optimized out by the compiler */
static void mbedtls_zeroize( void *v, size_t n ) {
volatile unsigned char *p = (unsigned char*)v; while( n-- ) *p++ = 0;
}
#define CCM_ENCRYPT 0
#define CCM_DECRYPT 1
@ -102,7 +98,7 @@ int mbedtls_ccm_setkey( mbedtls_ccm_context *ctx,
void mbedtls_ccm_free( mbedtls_ccm_context *ctx )
{
mbedtls_cipher_free( &ctx->cipher_ctx );
mbedtls_zeroize( ctx, sizeof( mbedtls_ccm_context ) );
mbedtls_platform_zeroize( ctx, sizeof( mbedtls_ccm_context ) );
}
/*
@ -343,7 +339,7 @@ int mbedtls_ccm_auth_decrypt( mbedtls_ccm_context *ctx, size_t length,
if( diff != 0 )
{
mbedtls_zeroize( output, length );
mbedtls_platform_zeroize( output, length );
return( MBEDTLS_ERR_CCM_AUTH_FAILED );
}

25
library/cipher.c
View file

@ -33,6 +33,7 @@
#include "mbedtls/cipher.h"
#include "mbedtls/cipher_internal.h"
#include "mbedtls/platform_util.h"
#include <stdlib.h>
#include <string.h>
@ -60,11 +61,6 @@
#define MBEDTLS_CIPHER_MODE_STREAM
#endif
/* Implementation that should never be optimized out by the compiler */
static void mbedtls_zeroize( void *v, size_t n ) {
volatile unsigned char *p = (unsigned char*)v; while( n-- ) *p++ = 0;
}
static int supported_init = 0;
const int *mbedtls_cipher_list( void )
@ -141,7 +137,8 @@ void mbedtls_cipher_free( mbedtls_cipher_context_t *ctx )
#if defined(MBEDTLS_CMAC_C)
if( ctx->cmac_ctx )
{
mbedtls_zeroize( ctx->cmac_ctx, sizeof( mbedtls_cmac_context_t ) );
mbedtls_platform_zeroize( ctx->cmac_ctx,
sizeof( mbedtls_cmac_context_t ) );
mbedtls_free( ctx->cmac_ctx );
}
#endif
@ -149,7 +146,7 @@ void mbedtls_cipher_free( mbedtls_cipher_context_t *ctx )
if( ctx->cipher_ctx )
ctx->cipher_info->base->ctx_free_func( ctx->cipher_ctx );
mbedtls_zeroize( ctx, sizeof(mbedtls_cipher_context_t) );
mbedtls_platform_zeroize( ctx, sizeof(mbedtls_cipher_context_t) );
}
int mbedtls_cipher_setup( mbedtls_cipher_context_t *ctx, const mbedtls_cipher_info_t *cipher_info )
@ -325,8 +322,10 @@ int mbedtls_cipher_update( mbedtls_cipher_context_t *ctx, const unsigned char *i
/*
* If there is not enough data for a full block, cache it.
*/
if( ( ctx->operation == MBEDTLS_DECRYPT &&
if( ( ctx->operation == MBEDTLS_DECRYPT && NULL != ctx->add_padding &&
ilen <= block_size - ctx->unprocessed_len ) ||
( ctx->operation == MBEDTLS_DECRYPT && NULL == ctx->add_padding &&
ilen < block_size - ctx->unprocessed_len ) ||
( ctx->operation == MBEDTLS_ENCRYPT &&
ilen < block_size - ctx->unprocessed_len ) )
{
@ -372,9 +371,17 @@ int mbedtls_cipher_update( mbedtls_cipher_context_t *ctx, const unsigned char *i
return MBEDTLS_ERR_CIPHER_INVALID_CONTEXT;
}
/* Encryption: only cache partial blocks
* Decryption w/ padding: always keep at least one whole block
* Decryption w/o padding: only cache partial blocks
*/
copy_len = ilen % block_size;
if( copy_len == 0 && ctx->operation == MBEDTLS_DECRYPT )
if( copy_len == 0 &&
ctx->operation == MBEDTLS_DECRYPT &&
NULL != ctx->add_padding)
{
copy_len = block_size;
}
memcpy( ctx->unprocessed_data, &( input[ilen - copy_len] ),
copy_len );

40
library/cmac.c
View file

@ -49,6 +49,7 @@
#if defined(MBEDTLS_CMAC_C)
#include "mbedtls/cmac.h"
#include "mbedtls/platform_util.h"
#include <string.h>
@ -67,11 +68,6 @@
#if !defined(MBEDTLS_CMAC_ALT) || defined(MBEDTLS_SELF_TEST)
/* Implementation that should never be optimized out by the compiler */
static void mbedtls_zeroize( void *v, size_t n ) {
volatile unsigned char *p = (unsigned char*)v; while( n-- ) *p++ = 0;
}
/*
* Multiplication by u in the Galois field of GF(2^n)
*
@ -144,7 +140,7 @@ static int cmac_generate_subkeys( mbedtls_cipher_context_t *ctx,
unsigned char L[MBEDTLS_CIPHER_BLKSIZE_MAX];
size_t olen, block_size;
mbedtls_zeroize( L, sizeof( L ) );
mbedtls_platform_zeroize( L, sizeof( L ) );
block_size = ctx->cipher_info->block_size;
@ -162,7 +158,7 @@ static int cmac_generate_subkeys( mbedtls_cipher_context_t *ctx,
goto exit;
exit:
mbedtls_zeroize( L, sizeof( L ) );
mbedtls_platform_zeroize( L, sizeof( L ) );
return( ret );
}
@ -238,7 +234,7 @@ int mbedtls_cipher_cmac_starts( mbedtls_cipher_context_t *ctx,
ctx->cmac_ctx = cmac_ctx;
mbedtls_zeroize( cmac_ctx->state, sizeof( cmac_ctx->state ) );
mbedtls_platform_zeroize( cmac_ctx->state, sizeof( cmac_ctx->state ) );
return 0;
}
@ -330,8 +326,8 @@ int mbedtls_cipher_cmac_finish( mbedtls_cipher_context_t *ctx,
block_size = ctx->cipher_info->block_size;
state = cmac_ctx->state;
mbedtls_zeroize( K1, sizeof( K1 ) );
mbedtls_zeroize( K2, sizeof( K2 ) );
mbedtls_platform_zeroize( K1, sizeof( K1 ) );
mbedtls_platform_zeroize( K2, sizeof( K2 ) );
cmac_generate_subkeys( ctx, K1, K2 );
last_block = cmac_ctx->unprocessed_block;
@ -361,14 +357,14 @@ int mbedtls_cipher_cmac_finish( mbedtls_cipher_context_t *ctx,
exit:
/* Wipe the generated keys on the stack, and any other transients to avoid
* side channel leakage */
mbedtls_zeroize( K1, sizeof( K1 ) );
mbedtls_zeroize( K2, sizeof( K2 ) );
mbedtls_platform_zeroize( K1, sizeof( K1 ) );
mbedtls_platform_zeroize( K2, sizeof( K2 ) );
cmac_ctx->unprocessed_len = 0;
mbedtls_zeroize( cmac_ctx->unprocessed_block,
sizeof( cmac_ctx->unprocessed_block ) );
mbedtls_platform_zeroize( cmac_ctx->unprocessed_block,
sizeof( cmac_ctx->unprocessed_block ) );
mbedtls_zeroize( state, MBEDTLS_CIPHER_BLKSIZE_MAX );
mbedtls_platform_zeroize( state, MBEDTLS_CIPHER_BLKSIZE_MAX );
return( ret );
}
@ -383,10 +379,10 @@ int mbedtls_cipher_cmac_reset( mbedtls_cipher_context_t *ctx )
/* Reset the internal state */
cmac_ctx->unprocessed_len = 0;
mbedtls_zeroize( cmac_ctx->unprocessed_block,
sizeof( cmac_ctx->unprocessed_block ) );
mbedtls_zeroize( cmac_ctx->state,
sizeof( cmac_ctx->state ) );
mbedtls_platform_zeroize( cmac_ctx->unprocessed_block,
sizeof( cmac_ctx->unprocessed_block ) );
mbedtls_platform_zeroize( cmac_ctx->state,
sizeof( cmac_ctx->state ) );
return( 0 );
}
@ -466,7 +462,7 @@ int mbedtls_aes_cmac_prf_128( const unsigned char *key, size_t key_length,
output );
exit:
mbedtls_zeroize( int_key, sizeof( int_key ) );
mbedtls_platform_zeroize( int_key, sizeof( int_key ) );
return( ret );
}
@ -771,7 +767,7 @@ static int cmac_test_subkeys( int verbose,
int block_size,
int num_tests )
{
int i, ret;
int i, ret = 0;
mbedtls_cipher_context_t ctx;
const mbedtls_cipher_info_t *cipher_info;
unsigned char K1[MBEDTLS_CIPHER_BLKSIZE_MAX];
@ -853,7 +849,7 @@ static int cmac_test_wth_cipher( int verbose,
int num_tests )
{
const mbedtls_cipher_info_t *cipher_info;
int i, ret;
int i, ret = 0;
unsigned char output[MBEDTLS_CIPHER_BLKSIZE_MAX];
cipher_info = mbedtls_cipher_info_from_type( cipher_type );

22
library/ctr_drbg.c
View file

@ -33,6 +33,7 @@
#if defined(MBEDTLS_CTR_DRBG_C)
#include "mbedtls/ctr_drbg.h"
#include "mbedtls/platform_util.h"
#include <string.h>
@ -49,11 +50,6 @@
#endif /* MBEDTLS_PLATFORM_C */
#endif /* MBEDTLS_SELF_TEST */
/* Implementation that should never be optimized out by the compiler */
static void mbedtls_zeroize( void *v, size_t n ) {
volatile unsigned char *p = v; while( n-- ) *p++ = 0;
}
/*
* CTR_DRBG context initialization
*/
@ -125,7 +121,7 @@ void mbedtls_ctr_drbg_free( mbedtls_ctr_drbg_context *ctx )
mbedtls_mutex_free( &ctx->mutex );
#endif
mbedtls_aes_free( &ctx->aes_ctx );
mbedtls_zeroize( ctx, sizeof( mbedtls_ctr_drbg_context ) );
mbedtls_platform_zeroize( ctx, sizeof( mbedtls_ctr_drbg_context ) );
}
void mbedtls_ctr_drbg_set_prediction_resistance( mbedtls_ctr_drbg_context *ctx, int resistance )
@ -245,16 +241,16 @@ exit:
/*
* tidy up the stack
*/
mbedtls_zeroize( buf, sizeof( buf ) );
mbedtls_zeroize( tmp, sizeof( tmp ) );
mbedtls_zeroize( key, sizeof( key ) );
mbedtls_zeroize( chain, sizeof( chain ) );
mbedtls_platform_zeroize( buf, sizeof( buf ) );
mbedtls_platform_zeroize( tmp, sizeof( tmp ) );
mbedtls_platform_zeroize( key, sizeof( key ) );
mbedtls_platform_zeroize( chain, sizeof( chain ) );
if( 0 != ret )
{
/*
* wipe partial seed from memory
*/
mbedtls_zeroize( output, MBEDTLS_CTR_DRBG_SEEDLEN );
mbedtls_platform_zeroize( output, MBEDTLS_CTR_DRBG_SEEDLEN );
}
return( ret );
@ -493,7 +489,7 @@ int mbedtls_ctr_drbg_write_seed_file( mbedtls_ctr_drbg_context *ctx, const char
ret = 0;
exit:
mbedtls_zeroize( buf, sizeof( buf ) );
mbedtls_platform_zeroize( buf, sizeof( buf ) );
fclose( f );
return( ret );
@ -526,7 +522,7 @@ int mbedtls_ctr_drbg_update_seed_file( mbedtls_ctr_drbg_context *ctx, const char
fclose( f );
mbedtls_zeroize( buf, sizeof( buf ) );
mbedtls_platform_zeroize( buf, sizeof( buf ) );
if( ret != 0 )
return( ret );

2
library/debug.c
View file

@ -91,7 +91,7 @@ void mbedtls_debug_print_msg( const mbedtls_ssl_context *ssl, int level,
va_start( argp, format );
#if defined(_WIN32)
#if defined(_TRUNCATE)
#if defined(_TRUNCATE) && !defined(__MINGW32__)
ret = _vsnprintf_s( str, DEBUG_BUF_SIZE, _TRUNCATE, format, argp );
#else
ret = _vsnprintf( str, DEBUG_BUF_SIZE, format, argp );

18
library/des.c
View file

@ -34,6 +34,7 @@
#if defined(MBEDTLS_DES_C)
#include "mbedtls/des.h"
#include "mbedtls/platform_util.h"
#include <string.h>
@ -48,11 +49,6 @@
#if !defined(MBEDTLS_DES_ALT)
/* Implementation that should never be optimized out by the compiler */
static void mbedtls_zeroize( void *v, size_t n ) {
volatile unsigned char *p = (unsigned char*)v; while( n-- ) *p++ = 0;
}
/*
* 32-bit integer manipulation macros (big endian)
*/
@ -316,7 +312,7 @@ void mbedtls_des_free( mbedtls_des_context *ctx )
if( ctx == NULL )
return;
mbedtls_zeroize( ctx, sizeof( mbedtls_des_context ) );
mbedtls_platform_zeroize( ctx, sizeof( mbedtls_des_context ) );
}
void mbedtls_des3_init( mbedtls_des3_context *ctx )
@ -329,7 +325,7 @@ void mbedtls_des3_free( mbedtls_des3_context *ctx )
if( ctx == NULL )
return;
mbedtls_zeroize( ctx, sizeof( mbedtls_des3_context ) );
mbedtls_platform_zeroize( ctx, sizeof( mbedtls_des3_context ) );
}
static const unsigned char odd_parity_table[128] = { 1, 2, 4, 7, 8,
@ -553,7 +549,7 @@ int mbedtls_des3_set2key_enc( mbedtls_des3_context *ctx,
uint32_t sk[96];
des3_set2key( ctx->sk, sk, key );
mbedtls_zeroize( sk, sizeof( sk ) );
mbedtls_platform_zeroize( sk, sizeof( sk ) );
return( 0 );
}
@ -567,7 +563,7 @@ int mbedtls_des3_set2key_dec( mbedtls_des3_context *ctx,
uint32_t sk[96];
des3_set2key( sk, ctx->sk, key );
mbedtls_zeroize( sk, sizeof( sk ) );
mbedtls_platform_zeroize( sk, sizeof( sk ) );
return( 0 );
}
@ -604,7 +600,7 @@ int mbedtls_des3_set3key_enc( mbedtls_des3_context *ctx,
uint32_t sk[96];
des3_set3key( ctx->sk, sk, key );
mbedtls_zeroize( sk, sizeof( sk ) );
mbedtls_platform_zeroize( sk, sizeof( sk ) );
return( 0 );
}
@ -618,7 +614,7 @@ int mbedtls_des3_set3key_dec( mbedtls_des3_context *ctx,
uint32_t sk[96];
des3_set3key( sk, ctx->sk, key );
mbedtls_zeroize( sk, sizeof( sk ) );
mbedtls_platform_zeroize( sk, sizeof( sk ) );
return( 0 );
}

11
library/dhm.c
View file

@ -36,6 +36,7 @@
#if defined(MBEDTLS_DHM_C)
#include "mbedtls/dhm.h"
#include "mbedtls/platform_util.h"
#include <string.h>
@ -58,10 +59,6 @@
#endif
#if !defined(MBEDTLS_DHM_ALT)
/* Implementation that should never be optimized out by the compiler */
static void mbedtls_zeroize( void *v, size_t n ) {
volatile unsigned char *p = v; while( n-- ) *p++ = 0;
}
/*
* helper to validate the mbedtls_mpi size and import it
@ -437,7 +434,7 @@ void mbedtls_dhm_free( mbedtls_dhm_context *ctx )
mbedtls_mpi_free( &ctx->GX ); mbedtls_mpi_free( &ctx->X );
mbedtls_mpi_free( &ctx->G ); mbedtls_mpi_free( &ctx->P );
mbedtls_zeroize( ctx, sizeof( mbedtls_dhm_context ) );
mbedtls_platform_zeroize( ctx, sizeof( mbedtls_dhm_context ) );
}
#if defined(MBEDTLS_ASN1_PARSE_C)
@ -575,7 +572,7 @@ static int load_file( const char *path, unsigned char **buf, size_t *n )
{
fclose( f );
mbedtls_zeroize( *buf, *n + 1 );
mbedtls_platform_zeroize( *buf, *n + 1 );
mbedtls_free( *buf );
return( MBEDTLS_ERR_DHM_FILE_IO_ERROR );
@ -605,7 +602,7 @@ int mbedtls_dhm_parse_dhmfile( mbedtls_dhm_context *dhm, const char *path )
ret = mbedtls_dhm_parse_dhm( dhm, buf, n );
mbedtls_zeroize( buf, n );
mbedtls_platform_zeroize( buf, n );
mbedtls_free( buf );
return( ret );

3
library/ecdsa.c
View file

@ -400,6 +400,9 @@ int mbedtls_ecdsa_read_signature( mbedtls_ecdsa_context *ctx,
&ctx->Q, &r, &s ) ) != 0 )
goto cleanup;
/* At this point we know that the buffer starts with a valid signature.
* Return 0 if the buffer just contains the signature, and a specific
* error code if the valid signature is followed by more data. */
if( p != end )
ret = MBEDTLS_ERR_ECP_SIG_LEN_MISMATCH;

2
library/ecjpake.c
View file

@ -301,7 +301,7 @@ cleanup:
*/
static int ecjpake_zkp_write( const mbedtls_md_info_t *md_info,
const mbedtls_ecp_group *grp,
const int pf,
const int pf,
const mbedtls_ecp_point *G,
const mbedtls_mpi *x,
const mbedtls_ecp_point *X,

32
library/ecp.c
View file

@ -26,6 +26,7 @@
* GECC = Guide to Elliptic Curve Cryptography - Hankerson, Menezes, Vanstone
* FIPS 186-3 http://csrc.nist.gov/publications/fips/fips186-3/fips_186-3.pdf
* RFC 4492 for the related TLS structures and constants
* RFC 7748 for the Curve448 and Curve25519 curve definitions
*
* [Curve25519] http://cr.yp.to/ecdh/curve25519-20060209.pdf
*
@ -50,6 +51,7 @@
#include "mbedtls/ecp.h"
#include "mbedtls/threading.h"
#include "mbedtls/platform_util.h"
#include <string.h>
@ -72,11 +74,6 @@
#define inline __inline
#endif
/* Implementation that should never be optimized out by the compiler */
static void mbedtls_zeroize( void *v, size_t n ) {
volatile unsigned char *p = v; while( n-- ) *p++ = 0;
}
#if defined(MBEDTLS_SELF_TEST)
/*
* Counts of point addition and doubling, and field multiplications.
@ -99,7 +96,8 @@ static unsigned long add_count, dbl_count, mul_count;
#define ECP_SHORTWEIERSTRASS
#endif
#if defined(MBEDTLS_ECP_DP_CURVE25519_ENABLED)
#if defined(MBEDTLS_ECP_DP_CURVE25519_ENABLED) || \
defined(MBEDTLS_ECP_DP_CURVE448_ENABLED)
#define ECP_MONTGOMERY
#endif
@ -346,7 +344,7 @@ void mbedtls_ecp_group_free( mbedtls_ecp_group *grp )
mbedtls_free( grp->T );
}
mbedtls_zeroize( grp, sizeof( mbedtls_ecp_group ) );
mbedtls_platform_zeroize( grp, sizeof( mbedtls_ecp_group ) );
}
/*
@ -1852,6 +1850,8 @@ cleanup:
static int ecp_check_pubkey_mx( const mbedtls_ecp_group *grp, const mbedtls_ecp_point *pt )
{
/* [Curve25519 p. 5] Just check X is the correct number of bytes */
/* Allow any public value, if it's too big then we'll just reduce it mod p
* (RFC 7748 sec. 5 para. 3). */
if( mbedtls_mpi_size( &pt->X ) > ( grp->nbits + 7 ) / 8 )
return( MBEDTLS_ERR_ECP_INVALID_KEY );
@ -1887,14 +1887,18 @@ int mbedtls_ecp_check_privkey( const mbedtls_ecp_group *grp, const mbedtls_mpi *
#if defined(ECP_MONTGOMERY)
if( ecp_get_type( grp ) == ECP_TYPE_MONTGOMERY )
{
/* see [Curve25519] page 5 */
/* see RFC 7748 sec. 5 para. 5 */
if( mbedtls_mpi_get_bit( d, 0 ) != 0 ||
mbedtls_mpi_get_bit( d, 1 ) != 0 ||
mbedtls_mpi_get_bit( d, 2 ) != 0 ||
mbedtls_mpi_bitlen( d ) - 1 != grp->nbits ) /* mbedtls_mpi_bitlen is one-based! */
return( MBEDTLS_ERR_ECP_INVALID_KEY );
else
return( 0 );
/* see [Curve25519] page 5 */
if( grp->nbits == 254 && mbedtls_mpi_get_bit( d, 2 ) != 0 )
return( MBEDTLS_ERR_ECP_INVALID_KEY );
return( 0 );
}
#endif /* ECP_MONTGOMERY */
#if defined(ECP_SHORTWEIERSTRASS)
@ -1941,10 +1945,14 @@ int mbedtls_ecp_gen_keypair_base( mbedtls_ecp_group *grp,
else
MBEDTLS_MPI_CHK( mbedtls_mpi_set_bit( d, grp->nbits, 1 ) );
/* Make sure the last three bits are unset */
/* Make sure the last two bits are unset for Curve448, three bits for
Curve25519 */
MBEDTLS_MPI_CHK( mbedtls_mpi_set_bit( d, 0, 0 ) );
MBEDTLS_MPI_CHK( mbedtls_mpi_set_bit( d, 1, 0 ) );
MBEDTLS_MPI_CHK( mbedtls_mpi_set_bit( d, 2, 0 ) );
if( grp->nbits == 254 )
{
MBEDTLS_MPI_CHK( mbedtls_mpi_set_bit( d, 2, 0 ) );
}
}
else
#endif /* ECP_MONTGOMERY */

135
library/ecp_curves.c
View file

@ -627,6 +627,9 @@ static int ecp_mod_p521( mbedtls_mpi * );
#if defined(MBEDTLS_ECP_DP_CURVE25519_ENABLED)
static int ecp_mod_p255( mbedtls_mpi * );
#endif
#if defined(MBEDTLS_ECP_DP_CURVE448_ENABLED)
static int ecp_mod_p448( mbedtls_mpi * );
#endif
#if defined(MBEDTLS_ECP_DP_SECP192K1_ENABLED)
static int ecp_mod_p192k1( mbedtls_mpi * );
#endif
@ -670,7 +673,12 @@ static int ecp_use_curve25519( mbedtls_ecp_group *grp )
MBEDTLS_MPI_CHK( mbedtls_mpi_sub_int( &grp->P, &grp->P, 19 ) );
grp->pbits = mbedtls_mpi_bitlen( &grp->P );
/* Y intentionaly not set, since we use x/z coordinates.
/* N = 2^252 + 27742317777372353535851937790883648493 */
MBEDTLS_MPI_CHK( mbedtls_mpi_read_string( &grp->N, 16,
"14DEF9DEA2F79CD65812631A5CF5D3ED" ) );
MBEDTLS_MPI_CHK( mbedtls_mpi_set_bit( &grp->N, 252, 1 ) );
/* Y intentionally not set, since we use x/z coordinates.
* This is used as a marker to identify Montgomery curves! */
MBEDTLS_MPI_CHK( mbedtls_mpi_lset( &grp->G.X, 9 ) );
MBEDTLS_MPI_CHK( mbedtls_mpi_lset( &grp->G.Z, 1 ) );
@ -687,6 +695,52 @@ cleanup:
}
#endif /* MBEDTLS_ECP_DP_CURVE25519_ENABLED */
#if defined(MBEDTLS_ECP_DP_CURVE448_ENABLED)
/*
* Specialized function for creating the Curve448 group
*/
static int ecp_use_curve448( mbedtls_ecp_group *grp )
{
mbedtls_mpi Ns;
int ret;
mbedtls_mpi_init( &Ns );
/* Actually ( A + 2 ) / 4 */
MBEDTLS_MPI_CHK( mbedtls_mpi_read_string( &grp->A, 16, "98AA" ) );
/* P = 2^448 - 2^224 - 1 */
MBEDTLS_MPI_CHK( mbedtls_mpi_lset( &grp->P, 1 ) );
MBEDTLS_MPI_CHK( mbedtls_mpi_shift_l( &grp->P, 224 ) );
MBEDTLS_MPI_CHK( mbedtls_mpi_sub_int( &grp->P, &grp->P, 1 ) );
MBEDTLS_MPI_CHK( mbedtls_mpi_shift_l( &grp->P, 224 ) );
MBEDTLS_MPI_CHK( mbedtls_mpi_sub_int( &grp->P, &grp->P, 1 ) );
grp->pbits = mbedtls_mpi_bitlen( &grp->P );
/* Y intentionally not set, since we use x/z coordinates.
* This is used as a marker to identify Montgomery curves! */
MBEDTLS_MPI_CHK( mbedtls_mpi_lset( &grp->G.X, 5 ) );
MBEDTLS_MPI_CHK( mbedtls_mpi_lset( &grp->G.Z, 1 ) );
mbedtls_mpi_free( &grp->G.Y );
/* N = 2^446 - 13818066809895115352007386748515426880336692474882178609894547503885 */
MBEDTLS_MPI_CHK( mbedtls_mpi_set_bit( &grp->N, 446, 1 ) );
MBEDTLS_MPI_CHK( mbedtls_mpi_read_string( &Ns, 16,
"8335DC163BB124B65129C96FDE933D8D723A70AADC873D6D54A7BB0D" ) );
MBEDTLS_MPI_CHK( mbedtls_mpi_sub_mpi( &grp->N, &grp->N, &Ns ) );
/* Actually, the required msb for private keys */
grp->nbits = 447;
cleanup:
mbedtls_mpi_free( &Ns );
if( ret != 0 )
mbedtls_ecp_group_free( grp );
return( ret );
}
#endif /* MBEDTLS_ECP_DP_CURVE448_ENABLED */
/*
* Set a group using well-known domain parameters
*/
@ -767,6 +821,12 @@ int mbedtls_ecp_group_load( mbedtls_ecp_group *grp, mbedtls_ecp_group_id id )
return( ecp_use_curve25519( grp ) );
#endif /* MBEDTLS_ECP_DP_CURVE25519_ENABLED */
#if defined(MBEDTLS_ECP_DP_CURVE448_ENABLED)
case MBEDTLS_ECP_DP_CURVE448:
grp->modp = ecp_mod_p448;
return( ecp_use_curve448( grp ) );
#endif /* MBEDTLS_ECP_DP_CURVE448_ENABLED */
default:
mbedtls_ecp_group_free( grp );
return( MBEDTLS_ERR_ECP_FEATURE_UNAVAILABLE );
@ -1176,7 +1236,7 @@ static int ecp_mod_p255( mbedtls_mpi *N )
M.s = 1;
M.n = N->n - ( P255_WIDTH - 1 );
if( M.n > P255_WIDTH + 1 )
M.n = P255_WIDTH + 1;
return( MBEDTLS_ERR_ECP_BAD_INPUT_DATA );
M.p = Mp;
memset( Mp, 0, sizeof Mp );
memcpy( Mp, N->p + P255_WIDTH - 1, M.n * sizeof( mbedtls_mpi_uint ) );
@ -1197,6 +1257,77 @@ cleanup:
}
#endif /* MBEDTLS_ECP_DP_CURVE25519_ENABLED */
#if defined(MBEDTLS_ECP_DP_CURVE448_ENABLED)
/* Size of p448 in terms of mbedtls_mpi_uint */
#define P448_WIDTH ( 448 / 8 / sizeof( mbedtls_mpi_uint ) )
/* Number of limbs fully occupied by 2^224 (max), and limbs used by it (min) */
#define DIV_ROUND_UP( X, Y ) ( ( ( X ) + ( Y ) - 1 ) / ( Y ) )
#define P224_WIDTH_MIN ( 28 / sizeof( mbedtls_mpi_uint ) )
#define P224_WIDTH_MAX DIV_ROUND_UP( 28, sizeof( mbedtls_mpi_uint ) )
#define P224_UNUSED_BITS ( ( P224_WIDTH_MAX * sizeof( mbedtls_mpi_uint ) * 8 ) - 224 )
/*
* Fast quasi-reduction modulo p448 = 2^448 - 2^224 - 1
* Write N as A0 + 2^448 A1 and A1 as B0 + 2^224 B1, and return
* A0 + A1 + B1 + (B0 + B1) * 2^224. This is different to the reference
* implementation of Curve448, which uses its own special 56-bit limbs rather
* than a generic bignum library. We could squeeze some extra speed out on
* 32-bit machines by splitting N up into 32-bit limbs and doing the
* arithmetic using the limbs directly as we do for the NIST primes above,
* but for 64-bit targets it should use half the number of operations if we do
* the reduction with 224-bit limbs, since mpi_add_mpi will then use 64-bit adds.
*/
static int ecp_mod_p448( mbedtls_mpi *N )
{
int ret;
size_t i;
mbedtls_mpi M, Q;
mbedtls_mpi_uint Mp[P448_WIDTH + 1], Qp[P448_WIDTH];
if( N->n <= P448_WIDTH )
return( 0 );
/* M = A1 */
M.s = 1;
M.n = N->n - ( P448_WIDTH );
if( M.n > P448_WIDTH )
/* Shouldn't be called with N larger than 2^896! */
return( MBEDTLS_ERR_ECP_BAD_INPUT_DATA );
M.p = Mp;
memset( Mp, 0, sizeof( Mp ) );
memcpy( Mp, N->p + P448_WIDTH, M.n * sizeof( mbedtls_mpi_uint ) );
/* N = A0 */
for( i = P448_WIDTH; i < N->n; i++ )
N->p[i] = 0;
/* N += A1 */
MBEDTLS_MPI_CHK( mbedtls_mpi_add_mpi( N, N, &M ) );
/* Q = B1, N += B1 */
Q = M;
Q.p = Qp;
memcpy( Qp, Mp, sizeof( Qp ) );
MBEDTLS_MPI_CHK( mbedtls_mpi_shift_r( &Q, 224 ) );
MBEDTLS_MPI_CHK( mbedtls_mpi_add_mpi( N, N, &Q ) );
/* M = (B0 + B1) * 2^224, N += M */
if( sizeof( mbedtls_mpi_uint ) > 4 )
Mp[P224_WIDTH_MIN] &= ( (mbedtls_mpi_uint)-1 ) >> ( P224_UNUSED_BITS );
for( i = P224_WIDTH_MAX; i < M.n; ++i )
Mp[i] = 0;
MBEDTLS_MPI_CHK( mbedtls_mpi_add_mpi( &M, &M, &Q ) );
M.n = P448_WIDTH + 1; /* Make room for shifted carry bit from the addition */
MBEDTLS_MPI_CHK( mbedtls_mpi_shift_l( &M, 224 ) );
MBEDTLS_MPI_CHK( mbedtls_mpi_add_mpi( N, N, &M ) );
cleanup:
return( ret );
}
#endif /* MBEDTLS_ECP_DP_CURVE448_ENABLED */
#if defined(MBEDTLS_ECP_DP_SECP192K1_ENABLED) || \
defined(MBEDTLS_ECP_DP_SECP224K1_ENABLED) || \
defined(MBEDTLS_ECP_DP_SECP256K1_ENABLED)

18
library/entropy.c
View file

@ -35,6 +35,7 @@
#include "mbedtls/entropy.h"
#include "mbedtls/entropy_poll.h"
#include "mbedtls/platform_util.h"
#include <string.h>
@ -59,11 +60,6 @@
#include "mbedtls/havege.h"
#endif
/* Implementation that should never be optimized out by the compiler */
static void mbedtls_zeroize( void *v, size_t n ) {
volatile unsigned char *p = v; while( n-- ) *p++ = 0;
}
#define ENTROPY_MAX_LOOP 256 /**< Maximum amount to loop before error */
void mbedtls_entropy_init( mbedtls_entropy_context *ctx )
@ -140,7 +136,7 @@ void mbedtls_entropy_free( mbedtls_entropy_context *ctx )
ctx->initial_entropy_run = 0;
#endif
ctx->source_count = 0;
mbedtls_zeroize( ctx->source, sizeof( ctx->source ) );
mbedtls_platform_zeroize( ctx->source, sizeof( ctx->source ) );
ctx->accumulator_started = 0;
}
@ -232,7 +228,7 @@ static int entropy_update( mbedtls_entropy_context *ctx, unsigned char source_id
#endif
cleanup:
mbedtls_zeroize( tmp, sizeof( tmp ) );
mbedtls_platform_zeroize( tmp, sizeof( tmp ) );
return( ret );
}
@ -300,7 +296,7 @@ static int entropy_gather_internal( mbedtls_entropy_context *ctx )
ret = MBEDTLS_ERR_ENTROPY_NO_STRONG_SOURCE;
cleanup:
mbedtls_zeroize( buf, sizeof( buf ) );
mbedtls_platform_zeroize( buf, sizeof( buf ) );
return( ret );
}
@ -433,7 +429,7 @@ int mbedtls_entropy_func( void *data, unsigned char *output, size_t len )
ret = 0;
exit:
mbedtls_zeroize( buf, sizeof( buf ) );
mbedtls_platform_zeroize( buf, sizeof( buf ) );
#if defined(MBEDTLS_THREADING_C)
if( mbedtls_mutex_unlock( &ctx->mutex ) != 0 )
@ -486,7 +482,7 @@ int mbedtls_entropy_write_seed_file( mbedtls_entropy_context *ctx, const char *p
ret = 0;
exit:
mbedtls_zeroize( buf, sizeof( buf ) );
mbedtls_platform_zeroize( buf, sizeof( buf ) );
fclose( f );
return( ret );
@ -516,7 +512,7 @@ int mbedtls_entropy_update_seed_file( mbedtls_entropy_context *ctx, const char *
fclose( f );
mbedtls_zeroize( buf, sizeof( buf ) );
mbedtls_platform_zeroize( buf, sizeof( buf ) );
if( ret != 0 )
return( ret );

2
library/entropy_poll.c
View file

@ -44,7 +44,7 @@
#if !defined(MBEDTLS_NO_PLATFORM_ENTROPY)
#if !defined(unix) && !defined(__unix__) && !defined(__unix) && \
!defined(__APPLE__) && !defined(_WIN32)
!defined(__APPLE__) && !defined(_WIN32) && !defined(__QNXNTO__)
#error "Platform entropy sources only work on Unix and Windows, see MBEDTLS_NO_PLATFORM_ENTROPY in config.h"
#endif

18
library/error.c
View file

@ -260,19 +260,19 @@ void mbedtls_strerror( int ret, char *buf, size_t buflen )
if( use_ret == -(MBEDTLS_ERR_ECP_BUFFER_TOO_SMALL) )
mbedtls_snprintf( buf, buflen, "ECP - The buffer is too small to write to" );
if( use_ret == -(MBEDTLS_ERR_ECP_FEATURE_UNAVAILABLE) )
mbedtls_snprintf( buf, buflen, "ECP - Requested curve not available" );
mbedtls_snprintf( buf, buflen, "ECP - The requested feature is not available, for example, the requested curve is not supported" );
if( use_ret == -(MBEDTLS_ERR_ECP_VERIFY_FAILED) )
mbedtls_snprintf( buf, buflen, "ECP - The signature is not valid" );
if( use_ret == -(MBEDTLS_ERR_ECP_ALLOC_FAILED) )
mbedtls_snprintf( buf, buflen, "ECP - Memory allocation failed" );
if( use_ret == -(MBEDTLS_ERR_ECP_RANDOM_FAILED) )
mbedtls_snprintf( buf, buflen, "ECP - Generation of random value, such as (ephemeral) key, failed" );
mbedtls_snprintf( buf, buflen, "ECP - Generation of random value, such as ephemeral key, failed" );
if( use_ret == -(MBEDTLS_ERR_ECP_INVALID_KEY) )
mbedtls_snprintf( buf, buflen, "ECP - Invalid private or public key" );
if( use_ret == -(MBEDTLS_ERR_ECP_SIG_LEN_MISMATCH) )
mbedtls_snprintf( buf, buflen, "ECP - Signature is valid but shorter than the user-supplied length" );
mbedtls_snprintf( buf, buflen, "ECP - The buffer contains a valid signature followed by more data" );
if( use_ret == -(MBEDTLS_ERR_ECP_HW_ACCEL_FAILED) )
mbedtls_snprintf( buf, buflen, "ECP - ECP hardware accelerator failed" );
mbedtls_snprintf( buf, buflen, "ECP - The ECP hardware accelerator failed" );
#endif /* MBEDTLS_ECP_C */
#if defined(MBEDTLS_MD_C)
@ -337,7 +337,7 @@ void mbedtls_strerror( int ret, char *buf, size_t buflen )
if( use_ret == -(MBEDTLS_ERR_PK_FEATURE_UNAVAILABLE) )
mbedtls_snprintf( buf, buflen, "PK - Unavailable feature, e.g. RSA disabled for RSA key" );
if( use_ret == -(MBEDTLS_ERR_PK_SIG_LEN_MISMATCH) )
mbedtls_snprintf( buf, buflen, "PK - The signature is valid but its length is less than expected" );
mbedtls_snprintf( buf, buflen, "PK - The buffer contains a valid signature followed by more data" );
if( use_ret == -(MBEDTLS_ERR_PK_HW_ACCEL_FAILED) )
mbedtls_snprintf( buf, buflen, "PK - PK hardware accelerator failed" );
#endif /* MBEDTLS_PK_C */
@ -482,7 +482,7 @@ void mbedtls_strerror( int ret, char *buf, size_t buflen )
if( use_ret == -(MBEDTLS_ERR_SSL_NO_USABLE_CIPHERSUITE) )
mbedtls_snprintf( buf, buflen, "SSL - None of the common ciphersuites is usable (eg, no suitable certificate, see debug messages)" );
if( use_ret == -(MBEDTLS_ERR_SSL_WANT_READ) )
mbedtls_snprintf( buf, buflen, "SSL - Connection requires a read call" );
mbedtls_snprintf( buf, buflen, "SSL - No data of requested type currently available on underlying transport" );
if( use_ret == -(MBEDTLS_ERR_SSL_WANT_WRITE) )
mbedtls_snprintf( buf, buflen, "SSL - Connection requires a write call" );
if( use_ret == -(MBEDTLS_ERR_SSL_TIMEOUT) )
@ -495,6 +495,8 @@ void mbedtls_strerror( int ret, char *buf, size_t buflen )
mbedtls_snprintf( buf, buflen, "SSL - The alert message received indicates a non-fatal error" );
if( use_ret == -(MBEDTLS_ERR_SSL_INVALID_VERIFY_HASH) )
mbedtls_snprintf( buf, buflen, "SSL - Couldn't set the hash for verifying CertificateVerify" );
if( use_ret == -(MBEDTLS_ERR_SSL_CONTINUE_PROCESSING) )
mbedtls_snprintf( buf, buflen, "SSL - Internal-only message signaling that further message-processing should be done" );
#endif /* MBEDTLS_SSL_TLS_C */
#if defined(MBEDTLS_X509_USE_C) || defined(MBEDTLS_X509_CREATE_C)
@ -760,6 +762,10 @@ void mbedtls_strerror( int ret, char *buf, size_t buflen )
mbedtls_snprintf( buf, buflen, "NET - Buffer is too small to hold the data" );
if( use_ret == -(MBEDTLS_ERR_NET_INVALID_CONTEXT) )
mbedtls_snprintf( buf, buflen, "NET - The context is invalid, eg because it was free()ed" );
if( use_ret == -(MBEDTLS_ERR_NET_POLL_FAILED) )
mbedtls_snprintf( buf, buflen, "NET - Polling the net context failed" );
if( use_ret == -(MBEDTLS_ERR_NET_BAD_INPUT_DATA) )
mbedtls_snprintf( buf, buflen, "NET - Input invalid" );
#endif /* MBEDTLS_NET_C */
#if defined(MBEDTLS_OID_C)

10
library/gcm.c
View file

@ -38,6 +38,7 @@
#if defined(MBEDTLS_GCM_C)
#include "mbedtls/gcm.h"
#include "mbedtls/platform_util.h"
#include <string.h>
@ -80,11 +81,6 @@
}
#endif
/* Implementation that should never be optimized out by the compiler */
static void mbedtls_zeroize( void *v, size_t n ) {
volatile unsigned char *p = v; while( n-- ) *p++ = 0;
}
/*
* Initialize a context
*/
@ -498,7 +494,7 @@ int mbedtls_gcm_auth_decrypt( mbedtls_gcm_context *ctx,
if( diff != 0 )
{
mbedtls_zeroize( output, length );
mbedtls_platform_zeroize( output, length );
return( MBEDTLS_ERR_GCM_AUTH_FAILED );
}
@ -508,7 +504,7 @@ int mbedtls_gcm_auth_decrypt( mbedtls_gcm_context *ctx,
void mbedtls_gcm_free( mbedtls_gcm_context *ctx )
{
mbedtls_cipher_free( &ctx->cipher_ctx );
mbedtls_zeroize( ctx, sizeof( mbedtls_gcm_context ) );
mbedtls_platform_zeroize( ctx, sizeof( mbedtls_gcm_context ) );
}
#endif /* !MBEDTLS_GCM_ALT */

8
library/havege.c
View file

@ -36,14 +36,10 @@
#include "mbedtls/havege.h"
#include "mbedtls/timing.h"
#include "mbedtls/platform_util.h"
#include <string.h>
/* Implementation that should never be optimized out by the compiler */
static void mbedtls_zeroize( void *v, size_t n ) {
volatile unsigned char *p = v; while( n-- ) *p++ = 0;
}
/* ------------------------------------------------------------------------
* On average, one iteration accesses two 8-word blocks in the havege WALK
* table, and generates 16 words in the RES array.
@ -208,7 +204,7 @@ void mbedtls_havege_free( mbedtls_havege_state *hs )
if( hs == NULL )
return;
mbedtls_zeroize( hs, sizeof( mbedtls_havege_state ) );
mbedtls_platform_zeroize( hs, sizeof( mbedtls_havege_state ) );
}
/*

12
library/hmac_drbg.c
View file

@ -34,6 +34,7 @@
#if defined(MBEDTLS_HMAC_DRBG_C)
#include "mbedtls/hmac_drbg.h"
#include "mbedtls/platform_util.h"
#include <string.h>
@ -50,11 +51,6 @@
#endif /* MBEDTLS_SELF_TEST */
#endif /* MBEDTLS_PLATFORM_C */
/* Implementation that should never be optimized out by the compiler */
static void mbedtls_zeroize( void *v, size_t n ) {
volatile unsigned char *p = v; while( n-- ) *p++ = 0;
}
/*
* HMAC_DRBG context initialization
*/
@ -338,7 +334,7 @@ void mbedtls_hmac_drbg_free( mbedtls_hmac_drbg_context *ctx )
mbedtls_mutex_free( &ctx->mutex );
#endif
mbedtls_md_free( &ctx->md_ctx );
mbedtls_zeroize( ctx, sizeof( mbedtls_hmac_drbg_context ) );
mbedtls_platform_zeroize( ctx, sizeof( mbedtls_hmac_drbg_context ) );
}
#if defined(MBEDTLS_FS_IO)
@ -364,7 +360,7 @@ int mbedtls_hmac_drbg_write_seed_file( mbedtls_hmac_drbg_context *ctx, const cha
exit:
fclose( f );
mbedtls_zeroize( buf, sizeof( buf ) );
mbedtls_platform_zeroize( buf, sizeof( buf ) );
return( ret );
}
@ -396,7 +392,7 @@ int mbedtls_hmac_drbg_update_seed_file( mbedtls_hmac_drbg_context *ctx, const ch
fclose( f );
mbedtls_zeroize( buf, sizeof( buf ) );
mbedtls_platform_zeroize( buf, sizeof( buf ) );
if( ret != 0 )
return( ret );

15
library/md.c
View file

@ -33,6 +33,7 @@
#include "mbedtls/md.h"
#include "mbedtls/md_internal.h"
#include "mbedtls/platform_util.h"
#if defined(MBEDTLS_PLATFORM_C)
#include "mbedtls/platform.h"
@ -48,11 +49,6 @@
#include <stdio.h>
#endif
/* Implementation that should never be optimized out by the compiler */
static void mbedtls_zeroize( void *v, size_t n ) {
volatile unsigned char *p = v; while( n-- ) *p++ = 0;
}
/*
* Reminder: update profiles in x509_crt.c when adding a new hash!
*/
@ -193,11 +189,12 @@ void mbedtls_md_free( mbedtls_md_context_t *ctx )
if( ctx->hmac_ctx != NULL )
{
mbedtls_zeroize( ctx->hmac_ctx, 2 * ctx->md_info->block_size );
mbedtls_platform_zeroize( ctx->hmac_ctx,
2 * ctx->md_info->block_size );
mbedtls_free( ctx->hmac_ctx );
}
mbedtls_zeroize( ctx, sizeof( mbedtls_md_context_t ) );
mbedtls_platform_zeroize( ctx, sizeof( mbedtls_md_context_t ) );
}
int mbedtls_md_clone( mbedtls_md_context_t *dst,
@ -311,7 +308,7 @@ int mbedtls_md_file( const mbedtls_md_info_t *md_info, const char *path, unsigne
ret = md_info->finish_func( ctx.md_ctx, output );
cleanup:
mbedtls_zeroize( buf, sizeof( buf ) );
mbedtls_platform_zeroize( buf, sizeof( buf ) );
fclose( f );
mbedtls_md_free( &ctx );
@ -361,7 +358,7 @@ int mbedtls_md_hmac_starts( mbedtls_md_context_t *ctx, const unsigned char *key,
goto cleanup;
cleanup:
mbedtls_zeroize( sum, sizeof( sum ) );
mbedtls_platform_zeroize( sum, sizeof( sum ) );
return( ret );
}

8
library/md2.c
View file

@ -34,6 +34,7 @@
#if defined(MBEDTLS_MD2_C)
#include "mbedtls/md2.h"
#include "mbedtls/platform_util.h"
#include <string.h>
@ -48,11 +49,6 @@
#if !defined(MBEDTLS_MD2_ALT)
/* Implementation that should never be optimized out by the compiler */
static void mbedtls_zeroize( void *v, size_t n ) {
volatile unsigned char *p = v; while( n-- ) *p++ = 0;
}
static const unsigned char PI_SUBST[256] =
{
0x29, 0x2E, 0x43, 0xC9, 0xA2, 0xD8, 0x7C, 0x01, 0x3D, 0x36,
@ -93,7 +89,7 @@ void mbedtls_md2_free( mbedtls_md2_context *ctx )
if( ctx == NULL )
return;
mbedtls_zeroize( ctx, sizeof( mbedtls_md2_context ) );
mbedtls_platform_zeroize( ctx, sizeof( mbedtls_md2_context ) );
}
void mbedtls_md2_clone( mbedtls_md2_context *dst,

8
library/md4.c
View file

@ -34,6 +34,7 @@
#if defined(MBEDTLS_MD4_C)
#include "mbedtls/md4.h"
#include "mbedtls/platform_util.h"
#include <string.h>
@ -48,11 +49,6 @@
#if !defined(MBEDTLS_MD4_ALT)
/* Implementation that should never be optimized out by the compiler */
static void mbedtls_zeroize( void *v, size_t n ) {
volatile unsigned char *p = v; while( n-- ) *p++ = 0;
}
/*
* 32-bit integer manipulation macros (little endian)
*/
@ -86,7 +82,7 @@ void mbedtls_md4_free( mbedtls_md4_context *ctx )
if( ctx == NULL )
return;
mbedtls_zeroize( ctx, sizeof( mbedtls_md4_context ) );
mbedtls_platform_zeroize( ctx, sizeof( mbedtls_md4_context ) );
}
void mbedtls_md4_clone( mbedtls_md4_context *dst,

8
library/md5.c
View file

@ -33,6 +33,7 @@
#if defined(MBEDTLS_MD5_C)
#include "mbedtls/md5.h"
#include "mbedtls/platform_util.h"
#include <string.h>
@ -47,11 +48,6 @@
#if !defined(MBEDTLS_MD5_ALT)
/* Implementation that should never be optimized out by the compiler */
static void mbedtls_zeroize( void *v, size_t n ) {
volatile unsigned char *p = v; while( n-- ) *p++ = 0;
}
/*
* 32-bit integer manipulation macros (little endian)
*/
@ -85,7 +81,7 @@ void mbedtls_md5_free( mbedtls_md5_context *ctx )
if( ctx == NULL )
return;
mbedtls_zeroize( ctx, sizeof( mbedtls_md5_context ) );
mbedtls_platform_zeroize( ctx, sizeof( mbedtls_md5_context ) );
}
void mbedtls_md5_clone( mbedtls_md5_context *dst,

49
library/memory_buffer_alloc.c
View file

@ -31,6 +31,7 @@
/* No need for the header guard as MBEDTLS_MEMORY_BUFFER_ALLOC_C
is dependent upon MBEDTLS_PLATFORM_C */
#include "mbedtls/platform.h"
#include "mbedtls/platform_util.h"
#include <string.h>
@ -42,11 +43,6 @@
#include "mbedtls/threading.h"
#endif
/* Implementation that should never be optimized out by the compiler */
static void mbedtls_zeroize( void *v, size_t n ) {
volatile unsigned char *p = v; while( n-- ) *p++ = 0;
}
#define MAGIC1 0xFF00AA55
#define MAGIC2 0xEE119966
#define MAX_BT 20
@ -113,7 +109,7 @@ static void debug_header( memory_header *hdr )
#endif
}
static void debug_chain()
static void debug_chain( void )
{
memory_header *cur = heap.first;
@ -180,11 +176,11 @@ static int verify_header( memory_header *hdr )
return( 0 );
}
static int verify_chain()
static int verify_chain( void )
{
memory_header *prv = heap.first, *cur = heap.first->next;
memory_header *prv = heap.first, *cur;
if( verify_header( heap.first ) != 0 )
if( prv == NULL || verify_header( prv ) != 0 )
{
#if defined(MBEDTLS_MEMORY_DEBUG)
mbedtls_fprintf( stderr, "FATAL: verification of first header "
@ -202,6 +198,8 @@ static int verify_chain()
return( 1 );
}
cur = heap.first->next;
while( cur != NULL )
{
if( verify_header( cur ) != 0 )
@ -245,7 +243,9 @@ static void *buffer_alloc_calloc( size_t n, size_t size )
original_len = len = n * size;
if( n != 0 && len / n != size )
if( n == 0 || size == 0 || len / n != size )
return( NULL );
else if( len > (size_t)-MBEDTLS_MEMORY_ALIGN_MULTIPLE )
return( NULL );
if( len % MBEDTLS_MEMORY_ALIGN_MULTIPLE )
@ -386,7 +386,7 @@ static void buffer_alloc_free( void *ptr )
if( ptr == NULL || heap.buf == NULL || heap.first == NULL )
return;
if( p < heap.buf || p > heap.buf + heap.len )
if( p < heap.buf || p >= heap.buf + heap.len )
{
#if defined(MBEDTLS_MEMORY_DEBUG)
mbedtls_fprintf( stderr, "FATAL: mbedtls_free() outside of managed "
@ -500,13 +500,13 @@ void mbedtls_memory_buffer_set_verify( int verify )
heap.verify = verify;
}
int mbedtls_memory_buffer_alloc_verify()
int mbedtls_memory_buffer_alloc_verify( void )
{
return verify_chain();
}
#if defined(MBEDTLS_MEMORY_DEBUG)
void mbedtls_memory_buffer_alloc_status()
void mbedtls_memory_buffer_alloc_status( void )
{
mbedtls_fprintf( stderr,
"Current use: %zu blocks / %zu bytes, max: %zu blocks / "
@ -570,8 +570,7 @@ static void buffer_alloc_free_mutexed( void *ptr )
void mbedtls_memory_buffer_alloc_init( unsigned char *buf, size_t len )
{
memset( &heap, 0, sizeof(buffer_alloc_ctx) );
memset( buf, 0, len );
memset( &heap, 0, sizeof( buffer_alloc_ctx ) );
#if defined(MBEDTLS_THREADING_C)
mbedtls_mutex_init( &heap.mutex );
@ -581,31 +580,35 @@ void mbedtls_memory_buffer_alloc_init( unsigned char *buf, size_t len )
mbedtls_platform_set_calloc_free( buffer_alloc_calloc, buffer_alloc_free );
#endif
if( (size_t) buf % MBEDTLS_MEMORY_ALIGN_MULTIPLE )
if( len < sizeof( memory_header ) + MBEDTLS_MEMORY_ALIGN_MULTIPLE )
return;
else if( (size_t)buf % MBEDTLS_MEMORY_ALIGN_MULTIPLE )
{
/* Adjust len first since buf is used in the computation */
len -= MBEDTLS_MEMORY_ALIGN_MULTIPLE
- (size_t) buf % MBEDTLS_MEMORY_ALIGN_MULTIPLE;
- (size_t)buf % MBEDTLS_MEMORY_ALIGN_MULTIPLE;
buf += MBEDTLS_MEMORY_ALIGN_MULTIPLE
- (size_t) buf % MBEDTLS_MEMORY_ALIGN_MULTIPLE;
- (size_t)buf % MBEDTLS_MEMORY_ALIGN_MULTIPLE;
}
memset( buf, 0, len );
heap.buf = buf;
heap.len = len;
heap.first = (memory_header *) buf;
heap.first->size = len - sizeof(memory_header);
heap.first = (memory_header *)buf;
heap.first->size = len - sizeof( memory_header );
heap.first->magic1 = MAGIC1;
heap.first->magic2 = MAGIC2;
heap.first_free = heap.first;
}
void mbedtls_memory_buffer_alloc_free()
void mbedtls_memory_buffer_alloc_free( void )
{
#if defined(MBEDTLS_THREADING_C)
mbedtls_mutex_free( &heap.mutex );
#endif
mbedtls_zeroize( &heap, sizeof(buffer_alloc_ctx) );
mbedtls_platform_zeroize( &heap, sizeof(buffer_alloc_ctx) );
}
#if defined(MBEDTLS_SELF_TEST)
@ -620,7 +623,7 @@ static int check_pointer( void *p )
return( 0 );
}
static int check_all_free( )
static int check_all_free( void )
{
if(
#if defined(MBEDTLS_MEMORY_DEBUG)

78
library/net_sockets.c
View file

@ -28,7 +28,7 @@
#if defined(MBEDTLS_NET_C)
#if !defined(unix) && !defined(__unix__) && !defined(__unix) && \
!defined(__APPLE__) && !defined(_WIN32)
!defined(__APPLE__) && !defined(_WIN32) && !defined(__QNXNTO__)
#error "This module only works on Unix and Windows, see MBEDTLS_NET_C in config.h"
#endif
@ -45,6 +45,8 @@
#if (defined(_WIN32) || defined(_WIN32_WCE)) && !defined(EFIX64) && \
!defined(EFI32)
#define IS_EINTR( ret ) ( ( ret ) == WSAEINTR )
#ifdef _WIN32_WINNT
#undef _WIN32_WINNT
#endif
@ -82,6 +84,8 @@ static int wsa_init_done = 0;
#include <netdb.h>
#include <errno.h>
#define IS_EINTR( ret ) ( ( ret ) == EINTR )
#endif /* ( _WIN32 || _WIN32_WCE ) && !EFIX64 && !EFI32 */
/* Some MS functions want int and MSVC warns if we pass size_t,
@ -271,7 +275,7 @@ static int net_would_block( const mbedtls_net_context *ctx )
static int net_would_block( const mbedtls_net_context *ctx )
{
int err = errno;
/*
* Never return 'WOULD BLOCK' on a non-blocking socket
*/
@ -438,6 +442,72 @@ int mbedtls_net_set_nonblock( mbedtls_net_context *ctx )
#endif
}
/*
* Check if data is available on the socket
*/
int mbedtls_net_poll( mbedtls_net_context *ctx, uint32_t rw, uint32_t timeout )
{
int ret;
struct timeval tv;
fd_set read_fds;
fd_set write_fds;
int fd = ctx->fd;
if( fd < 0 )
return( MBEDTLS_ERR_NET_INVALID_CONTEXT );
#if defined(__has_feature)
#if __has_feature(memory_sanitizer)
/* Ensure that memory sanitizers consider read_fds and write_fds as
* initialized even on platforms such as Glibc/x86_64 where FD_ZERO
* is implemented in assembly. */
memset( &read_fds, 0, sizeof( read_fds ) );
memset( &write_fds, 0, sizeof( write_fds ) );
#endif
#endif
FD_ZERO( &read_fds );
if( rw & MBEDTLS_NET_POLL_READ )
{
rw &= ~MBEDTLS_NET_POLL_READ;
FD_SET( fd, &read_fds );
}
FD_ZERO( &write_fds );
if( rw & MBEDTLS_NET_POLL_WRITE )
{
rw &= ~MBEDTLS_NET_POLL_WRITE;
FD_SET( fd, &write_fds );
}
if( rw != 0 )
return( MBEDTLS_ERR_NET_BAD_INPUT_DATA );
tv.tv_sec = timeout / 1000;
tv.tv_usec = ( timeout % 1000 ) * 1000;
do
{
ret = select( fd + 1, &read_fds, &write_fds, NULL,
timeout == (uint32_t) -1 ? NULL : &tv );
}
while( IS_EINTR( ret ) );
if( ret < 0 )
return( MBEDTLS_ERR_NET_POLL_FAILED );
ret = 0;
if( FD_ISSET( fd, &read_fds ) )
ret |= MBEDTLS_NET_POLL_READ;
if( FD_ISSET( fd, &write_fds ) )
ret |= MBEDTLS_NET_POLL_WRITE;
return( ret );
}
/*
* Portable usleep helper
*/
@ -497,8 +567,8 @@ int mbedtls_net_recv( void *ctx, unsigned char *buf, size_t len )
/*
* Read at most 'len' characters, blocking for at most 'timeout' ms
*/
int mbedtls_net_recv_timeout( void *ctx, unsigned char *buf, size_t len,
uint32_t timeout )
int mbedtls_net_recv_timeout( void *ctx, unsigned char *buf,
size_t len, uint32_t timeout )
{
int ret;
struct timeval tv;

33
library/pem.c
View file

@ -33,6 +33,7 @@
#include "mbedtls/aes.h"
#include "mbedtls/md5.h"
#include "mbedtls/cipher.h"
#include "mbedtls/platform_util.h"
#include <string.h>
@ -45,11 +46,6 @@
#endif
#if defined(MBEDTLS_PEM_PARSE_C)
/* Implementation that should never be optimized out by the compiler */
static void mbedtls_zeroize( void *v, size_t n ) {
volatile unsigned char *p = v; while( n-- ) *p++ = 0;
}
void mbedtls_pem_init( mbedtls_pem_context *ctx )
{
memset( ctx, 0, sizeof( mbedtls_pem_context ) );
@ -135,7 +131,7 @@ static int pem_pbkdf1( unsigned char *key, size_t keylen,
exit:
mbedtls_md5_free( &md5_ctx );
mbedtls_zeroize( md5sum, 16 );
mbedtls_platform_zeroize( md5sum, 16 );
return( ret );
}
@ -164,7 +160,7 @@ static int pem_des_decrypt( unsigned char des_iv[8],
exit:
mbedtls_des_free( &des_ctx );
mbedtls_zeroize( des_key, 8 );
mbedtls_platform_zeroize( des_key, 8 );
return( ret );
}
@ -192,7 +188,7 @@ static int pem_des3_decrypt( unsigned char des3_iv[8],
exit:
mbedtls_des3_free( &des3_ctx );
mbedtls_zeroize( des3_key, 24 );
mbedtls_platform_zeroize( des3_key, 24 );
return( ret );
}
@ -222,7 +218,7 @@ static int pem_aes_decrypt( unsigned char aes_iv[16], unsigned int keylen,
exit:
mbedtls_aes_free( &aes_ctx );
mbedtls_zeroize( aes_key, keylen );
mbedtls_platform_zeroize( aes_key, keylen );
return( ret );
}
@ -359,7 +355,7 @@ int mbedtls_pem_read_buffer( mbedtls_pem_context *ctx, const char *header, const
if( ( ret = mbedtls_base64_decode( buf, len, &len, s1, s2 - s1 ) ) != 0 )
{
mbedtls_zeroize( buf, len );
mbedtls_platform_zeroize( buf, len );
mbedtls_free( buf );
return( MBEDTLS_ERR_PEM_INVALID_DATA + ret );
}
@ -370,7 +366,7 @@ int mbedtls_pem_read_buffer( mbedtls_pem_context *ctx, const char *header, const
( defined(MBEDTLS_DES_C) || defined(MBEDTLS_AES_C) )
if( pwd == NULL )
{
mbedtls_zeroize( buf, len );
mbedtls_platform_zeroize( buf, len );
mbedtls_free( buf );
return( MBEDTLS_ERR_PEM_PASSWORD_REQUIRED );
}
@ -403,16 +399,16 @@ int mbedtls_pem_read_buffer( mbedtls_pem_context *ctx, const char *header, const
* The result will be ASN.1 starting with a SEQUENCE tag, with 1 to 3
* length bytes (allow 4 to be sure) in all known use cases.
*
* Use that as heurisitic to try detecting password mismatchs.
* Use that as a heuristic to try to detect password mismatches.
*/
if( len <= 2 || buf[0] != 0x30 || buf[1] > 0x83 )
{
mbedtls_zeroize( buf, len );
mbedtls_platform_zeroize( buf, len );
mbedtls_free( buf );
return( MBEDTLS_ERR_PEM_PASSWORD_MISMATCH );
}
#else
mbedtls_zeroize( buf, len );
mbedtls_platform_zeroize( buf, len );
mbedtls_free( buf );
return( MBEDTLS_ERR_PEM_FEATURE_UNAVAILABLE );
#endif /* MBEDTLS_MD5_C && MBEDTLS_CIPHER_MODE_CBC &&
@ -428,11 +424,11 @@ int mbedtls_pem_read_buffer( mbedtls_pem_context *ctx, const char *header, const
void mbedtls_pem_free( mbedtls_pem_context *ctx )
{
if( ctx->buf != NULL )
mbedtls_zeroize( ctx->buf, ctx->buflen );
mbedtls_platform_zeroize( ctx->buf, ctx->buflen );
mbedtls_free( ctx->buf );
mbedtls_free( ctx->info );
mbedtls_zeroize( ctx, sizeof( mbedtls_pem_context ) );
mbedtls_platform_zeroize( ctx, sizeof( mbedtls_pem_context ) );
}
#endif /* MBEDTLS_PEM_PARSE_C */
@ -442,7 +438,7 @@ int mbedtls_pem_write_buffer( const char *header, const char *footer,
unsigned char *buf, size_t buf_len, size_t *olen )
{
int ret;
unsigned char *encode_buf, *c, *p = buf;
unsigned char *encode_buf = NULL, *c, *p = buf;
size_t len = 0, use_len, add_len = 0;
mbedtls_base64_encode( NULL, 0, &use_len, der_data, der_len );
@ -454,7 +450,8 @@ int mbedtls_pem_write_buffer( const char *header, const char *footer,
return( MBEDTLS_ERR_BASE64_BUFFER_TOO_SMALL );
}
if( ( encode_buf = mbedtls_calloc( 1, use_len ) ) == NULL )
if( use_len != 0 &&
( ( encode_buf = mbedtls_calloc( 1, use_len ) ) == NULL ) )
return( MBEDTLS_ERR_PEM_ALLOC_FAILED );
if( ( ret = mbedtls_base64_encode( encode_buf, use_len, &use_len, der_data,

9
library/pk.c
View file

@ -29,6 +29,8 @@
#include "mbedtls/pk.h"
#include "mbedtls/pk_internal.h"
#include "mbedtls/platform_util.h"
#if defined(MBEDTLS_RSA_C)
#include "mbedtls/rsa.h"
#endif
@ -42,11 +44,6 @@
#include <limits.h>
#include <stdint.h>
/* Implementation that should never be optimized out by the compiler */
static void mbedtls_zeroize( void *v, size_t n ) {
volatile unsigned char *p = v; while( n-- ) *p++ = 0;
}
/*
* Initialise a mbedtls_pk_context
*/
@ -69,7 +66,7 @@ void mbedtls_pk_free( mbedtls_pk_context *ctx )
ctx->pk_info->ctx_free_func( ctx->pk_ctx );
mbedtls_zeroize( ctx, sizeof( mbedtls_pk_context ) );
mbedtls_platform_zeroize( ctx, sizeof( mbedtls_pk_context ) );
}
/*

18
library/pk_wrap.c
View file

@ -41,6 +41,10 @@
#include "mbedtls/ecdsa.h"
#endif
#if defined(MBEDTLS_PK_RSA_ALT_SUPPORT)
#include "mbedtls/platform_util.h"
#endif
#if defined(MBEDTLS_PLATFORM_C)
#include "mbedtls/platform.h"
#else
@ -52,13 +56,6 @@
#include <limits.h>
#include <stdint.h>
#if defined(MBEDTLS_PK_RSA_ALT_SUPPORT)
/* Implementation that should never be optimized out by the compiler */
static void mbedtls_zeroize( void *v, size_t n ) {
volatile unsigned char *p = v; while( n-- ) *p++ = 0;
}
#endif
#if defined(MBEDTLS_RSA_C)
static int rsa_can_do( mbedtls_pk_type_t type )
{
@ -93,6 +90,11 @@ static int rsa_verify_wrap( void *ctx, mbedtls_md_type_t md_alg,
(unsigned int) hash_len, hash, sig ) ) != 0 )
return( ret );
/* The buffer contains a valid signature followed by extra data.
* We have a special error code for that so that so that callers can
* use mbedtls_pk_verify() to check "Does the buffer start with a
* valid signature?" and not just "Does the buffer contain a valid
* signature?". */
if( sig_len > rsa_len )
return( MBEDTLS_ERR_PK_SIG_LEN_MISMATCH );
@ -493,7 +495,7 @@ static void *rsa_alt_alloc_wrap( void )
static void rsa_alt_free_wrap( void *ctx )
{
mbedtls_zeroize( ctx, sizeof( mbedtls_rsa_alt_context ) );
mbedtls_platform_zeroize( ctx, sizeof( mbedtls_rsa_alt_context ) );
mbedtls_free( ctx );
}

20
library/pkcs12.c
View file

@ -36,6 +36,7 @@
#include "mbedtls/pkcs12.h"
#include "mbedtls/asn1.h"
#include "mbedtls/cipher.h"
#include "mbedtls/platform_util.h"
#include <string.h>
@ -47,11 +48,6 @@
#include "mbedtls/des.h"
#endif
/* Implementation that should never be optimized out by the compiler */
static void mbedtls_zeroize( void *v, size_t n ) {
volatile unsigned char *p = v; while( n-- ) *p++ = 0;
}
static int pkcs12_parse_pbe_params( mbedtls_asn1_buf *params,
mbedtls_asn1_buf *salt, int *iterations )
{
@ -166,7 +162,7 @@ int mbedtls_pkcs12_pbe_sha1_rc4_128( mbedtls_asn1_buf *pbe_params, int mode,
goto exit;
exit:
mbedtls_zeroize( key, sizeof( key ) );
mbedtls_platform_zeroize( key, sizeof( key ) );
mbedtls_arc4_free( &ctx );
return( ret );
@ -223,8 +219,8 @@ int mbedtls_pkcs12_pbe( mbedtls_asn1_buf *pbe_params, int mode,
ret = MBEDTLS_ERR_PKCS12_PASSWORD_MISMATCH;
exit:
mbedtls_zeroize( key, sizeof( key ) );
mbedtls_zeroize( iv, sizeof( iv ) );
mbedtls_platform_zeroize( key, sizeof( key ) );
mbedtls_platform_zeroize( iv, sizeof( iv ) );
mbedtls_cipher_free( &cipher_ctx );
return( ret );
@ -352,10 +348,10 @@ int mbedtls_pkcs12_derivation( unsigned char *data, size_t datalen,
ret = 0;
exit:
mbedtls_zeroize( salt_block, sizeof( salt_block ) );
mbedtls_zeroize( pwd_block, sizeof( pwd_block ) );
mbedtls_zeroize( hash_block, sizeof( hash_block ) );
mbedtls_zeroize( hash_output, sizeof( hash_output ) );
mbedtls_platform_zeroize( salt_block, sizeof( salt_block ) );
mbedtls_platform_zeroize( pwd_block, sizeof( pwd_block ) );
mbedtls_platform_zeroize( hash_block, sizeof( hash_block ) );
mbedtls_platform_zeroize( hash_output, sizeof( hash_output ) );
mbedtls_md_free( &md_ctx );

20
library/pkcs5.c
View file

@ -38,9 +38,12 @@
#if defined(MBEDTLS_PKCS5_C)
#include "mbedtls/pkcs5.h"
#if defined(MBEDTLS_ASN1_PARSE_C)
#include "mbedtls/asn1.h"
#include "mbedtls/cipher.h"
#include "mbedtls/oid.h"
#endif /* MBEDTLS_ASN1_PARSE_C */
#include <string.h>
@ -51,6 +54,22 @@
#define mbedtls_printf printf
#endif
#if !defined(MBEDTLS_ASN1_PARSE_C)
int mbedtls_pkcs5_pbes2( const mbedtls_asn1_buf *pbe_params, int mode,
const unsigned char *pwd, size_t pwdlen,
const unsigned char *data, size_t datalen,
unsigned char *output )
{
((void) pbe_params);
((void) mode);
((void) pwd);
((void) pwdlen);
((void) data);
((void) datalen);
((void) output);
return( MBEDTLS_ERR_PKCS5_FEATURE_UNAVAILABLE );
}
#else
static int pkcs5_parse_pbkdf2_params( const mbedtls_asn1_buf *params,
mbedtls_asn1_buf *salt, int *iterations,
int *keylen, mbedtls_md_type_t *md_type )
@ -211,6 +230,7 @@ exit:
return( ret );
}
#endif /* MBEDTLS_ASN1_PARSE_C */
int mbedtls_pkcs5_pbkdf2_hmac( mbedtls_md_context_t *ctx, const unsigned char *password,
size_t plen, const unsigned char *salt, size_t slen,

27
library/pkparse.c
View file

@ -30,6 +30,7 @@
#include "mbedtls/pk.h"
#include "mbedtls/asn1.h"
#include "mbedtls/oid.h"
#include "mbedtls/platform_util.h"
#include <string.h>
@ -60,14 +61,6 @@
#define mbedtls_free free
#endif
#if defined(MBEDTLS_FS_IO) || \
defined(MBEDTLS_PKCS12_C) || defined(MBEDTLS_PKCS5_C)
/* Implementation that should never be optimized out by the compiler */
static void mbedtls_zeroize( void *v, size_t n ) {
volatile unsigned char *p = v; while( n-- ) *p++ = 0;
}
#endif
#if defined(MBEDTLS_FS_IO)
/*
* Load all data from a file into a given buffer.
@ -105,7 +98,7 @@ int mbedtls_pk_load_file( const char *path, unsigned char **buf, size_t *n )
{
fclose( f );
mbedtls_zeroize( *buf, *n );
mbedtls_platform_zeroize( *buf, *n );
mbedtls_free( *buf );
return( MBEDTLS_ERR_PK_FILE_IO_ERROR );
@ -140,7 +133,7 @@ int mbedtls_pk_parse_keyfile( mbedtls_pk_context *ctx,
ret = mbedtls_pk_parse_key( ctx, buf, n,
(const unsigned char *) pwd, strlen( pwd ) );
mbedtls_zeroize( buf, n );
mbedtls_platform_zeroize( buf, n );
mbedtls_free( buf );
return( ret );
@ -160,7 +153,7 @@ int mbedtls_pk_parse_public_keyfile( mbedtls_pk_context *ctx, const char *path )
ret = mbedtls_pk_parse_public_key( ctx, buf, n );
mbedtls_zeroize( buf, n );
mbedtls_platform_zeroize( buf, n );
mbedtls_free( buf );
return( ret );
@ -181,6 +174,10 @@ static int pk_get_ecparams( unsigned char **p, const unsigned char *end,
{
int ret;
if ( end - *p < 1 )
return( MBEDTLS_ERR_PK_KEY_INVALID_FORMAT +
MBEDTLS_ERR_ASN1_OUT_OF_DATA );
/* Tag may be either OID or SEQUENCE */
params->tag = **p;
if( params->tag != MBEDTLS_ASN1_OID
@ -857,7 +854,10 @@ static int pk_parse_key_sec1_der( mbedtls_ecp_keypair *eck,
mbedtls_ecp_keypair_free( eck );
return( MBEDTLS_ERR_PK_KEY_INVALID_FORMAT + ret );
}
}
if( p != end )
{
/*
* Is 'publickey' present? If not, or if we can't read it (eg because it
* is compressed), create it from the private key.
@ -1277,6 +1277,9 @@ int mbedtls_pk_parse_key( mbedtls_pk_context *pk,
{
unsigned char *key_copy;
if( keylen == 0 )
return( MBEDTLS_ERR_PK_KEY_INVALID_FORMAT );
if( ( key_copy = mbedtls_calloc( 1, keylen ) ) == NULL )
return( MBEDTLS_ERR_PK_ALLOC_FAILED );
@ -1285,7 +1288,7 @@ int mbedtls_pk_parse_key( mbedtls_pk_context *pk,
ret = pk_parse_key_pkcs8_encrypted_der( pk, key_copy, keylen,
pwd, pwdlen );
mbedtls_zeroize( key_copy, keylen );
mbedtls_platform_zeroize( key_copy, keylen );
mbedtls_free( key_copy );
}

13
library/platform.c
View file

@ -28,14 +28,7 @@
#if defined(MBEDTLS_PLATFORM_C)
#include "mbedtls/platform.h"
#if defined(MBEDTLS_ENTROPY_NV_SEED) && \
!defined(MBEDTLS_PLATFORM_NO_STD_FUNCTIONS) && defined(MBEDTLS_FS_IO)
/* Implementation that should never be optimized out by the compiler */
static void mbedtls_zeroize( void *v, size_t n ) {
volatile unsigned char *p = (unsigned char*)v; while( n-- ) *p++ = 0;
}
#endif
#include "mbedtls/platform_util.h"
#if defined(MBEDTLS_PLATFORM_MEMORY)
#if !defined(MBEDTLS_PLATFORM_STD_CALLOC)
@ -82,7 +75,7 @@ int mbedtls_platform_win32_snprintf( char *s, size_t n, const char *fmt, ... )
return( -1 );
va_start( argp, fmt );
#if defined(_TRUNCATE)
#if defined(_TRUNCATE) && !defined(__MINGW32__)
ret = _vsnprintf_s( s, n, _TRUNCATE, fmt, argp );
#else
ret = _vsnprintf( s, n, fmt, argp );
@ -241,7 +234,7 @@ int mbedtls_platform_std_nv_seed_read( unsigned char *buf, size_t buf_len )
if( ( n = fread( buf, 1, buf_len, file ) ) != buf_len )
{
fclose( file );
mbedtls_zeroize( buf, buf_len );
mbedtls_platform_zeroize( buf, buf_len );
return( -1 );
}

67
library/platform_util.c Normal file
View file

@ -0,0 +1,67 @@
/*
* Common and shared functions used by multiple modules in the Mbed TLS
* library.
*
* Copyright (C) 2018, Arm Limited, All Rights Reserved
* SPDX-License-Identifier: Apache-2.0
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may
* not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* This file is part of Mbed TLS (https://tls.mbed.org)
*/
#if !defined(MBEDTLS_CONFIG_FILE)
#include "mbedtls/config.h"
#else
#include MBEDTLS_CONFIG_FILE
#endif
#include "mbedtls/platform_util.h"
#include <stddef.h>
#include <string.h>
#if !defined(MBEDTLS_PLATFORM_ZEROIZE_ALT)
/*
* This implementation should never be optimized out by the compiler
*
* This implementation for mbedtls_platform_zeroize() was inspired from Colin
* Percival's blog article at:
*
* http://www.daemonology.net/blog/2014-09-04-how-to-zero-a-buffer.html
*
* It uses a volatile function pointer to the standard memset(). Because the
* pointer is volatile the compiler expects it to change at
* any time and will not optimize out the call that could potentially perform
* other operations on the input buffer instead of just setting it to 0.
* Nevertheless, as pointed out by davidtgoldblatt on Hacker News
* (refer to http://www.daemonology.net/blog/2014-09-05-erratum.html for
* details), optimizations of the following form are still possible:
*
* if( memset_func != memset )
* memset_func( buf, 0, len );
*
* Note that it is extremely difficult to guarantee that
* mbedtls_platform_zeroize() will not be optimized out by aggressive compilers
* in a portable way. For this reason, Mbed TLS also provides the configuration
* option MBEDTLS_PLATFORM_ZEROIZE_ALT, which allows users to configure
* mbedtls_platform_zeroize() to use a suitable implementation for their
* platform and needs.
*/
static void * (* const volatile memset_func)( void *, int, size_t ) = memset;
void mbedtls_platform_zeroize( void *buf, size_t len )
{
memset_func( buf, 0, len );
}
#endif /* MBEDTLS_PLATFORM_ZEROIZE_ALT */

8
library/ripemd160.c
View file

@ -34,6 +34,7 @@
#if defined(MBEDTLS_RIPEMD160_C)
#include "mbedtls/ripemd160.h"
#include "mbedtls/platform_util.h"
#include <string.h>
@ -71,11 +72,6 @@
}
#endif
/* Implementation that should never be optimized out by the compiler */
static void mbedtls_zeroize( void *v, size_t n ) {
volatile unsigned char *p = v; while( n-- ) *p++ = 0;
}
void mbedtls_ripemd160_init( mbedtls_ripemd160_context *ctx )
{
memset( ctx, 0, sizeof( mbedtls_ripemd160_context ) );
@ -86,7 +82,7 @@ void mbedtls_ripemd160_free( mbedtls_ripemd160_context *ctx )
if( ctx == NULL )
return;
mbedtls_zeroize( ctx, sizeof( mbedtls_ripemd160_context ) );
mbedtls_platform_zeroize( ctx, sizeof( mbedtls_ripemd160_context ) );
}
void mbedtls_ripemd160_clone( mbedtls_ripemd160_context *dst,

194
library/rsa.c
View file

@ -48,6 +48,7 @@
#include "mbedtls/rsa.h"
#include "mbedtls/rsa_internal.h"
#include "mbedtls/oid.h"
#include "mbedtls/platform_util.h"
#include <string.h>
@ -70,11 +71,7 @@
#if !defined(MBEDTLS_RSA_ALT)
/* Implementation that should never be optimized out by the compiler */
static void mbedtls_zeroize( void *v, size_t n ) {
volatile unsigned char *p = (unsigned char*)v; while( n-- ) *p++ = 0;
}
#if defined(MBEDTLS_PKCS1_V15)
/* constant-time buffer comparison */
static inline int mbedtls_safer_memcmp( const void *a, const void *b, size_t n )
{
@ -88,6 +85,7 @@ static inline int mbedtls_safer_memcmp( const void *a, const void *b, size_t n )
return( diff );
}
#endif /* MBEDTLS_PKCS1_V15 */
int mbedtls_rsa_import( mbedtls_rsa_context *ctx,
const mbedtls_mpi *N,
@ -493,6 +491,9 @@ size_t mbedtls_rsa_get_len( const mbedtls_rsa_context *ctx )
/*
* Generate an RSA keypair
*
* This generation method follows the RSA key pair generation procedure of
* FIPS 186-4 if 2^16 < exponent < 2^256 and nbits = 2048 or nbits = 3072.
*/
int mbedtls_rsa_gen_key( mbedtls_rsa_context *ctx,
int (*f_rng)(void *, unsigned char *, size_t),
@ -500,7 +501,7 @@ int mbedtls_rsa_gen_key( mbedtls_rsa_context *ctx,
unsigned int nbits, int exponent )
{
int ret;
mbedtls_mpi H, G;
mbedtls_mpi H, G, L;
if( f_rng == NULL || nbits < 128 || exponent < 3 )
return( MBEDTLS_ERR_RSA_BAD_INPUT_DATA );
@ -510,10 +511,13 @@ int mbedtls_rsa_gen_key( mbedtls_rsa_context *ctx,
mbedtls_mpi_init( &H );
mbedtls_mpi_init( &G );
mbedtls_mpi_init( &L );
/*
* find primes P and Q with Q < P so that:
* GCD( E, (P-1)*(Q-1) ) == 1
* 1. |P-Q| > 2^( nbits / 2 - 100 )
* 2. GCD( E, (P-1)*(Q-1) ) == 1
* 3. E^-1 mod LCM(P-1, Q-1) > 2^( nbits / 2 )
*/
MBEDTLS_MPI_CHK( mbedtls_mpi_lset( &ctx->E, exponent ) );
@ -525,40 +529,51 @@ int mbedtls_rsa_gen_key( mbedtls_rsa_context *ctx,
MBEDTLS_MPI_CHK( mbedtls_mpi_gen_prime( &ctx->Q, nbits >> 1, 0,
f_rng, p_rng ) );
if( mbedtls_mpi_cmp_mpi( &ctx->P, &ctx->Q ) == 0 )
/* make sure the difference between p and q is not too small (FIPS 186-4 §B.3.3 step 5.4) */
MBEDTLS_MPI_CHK( mbedtls_mpi_sub_mpi( &H, &ctx->P, &ctx->Q ) );
if( mbedtls_mpi_bitlen( &H ) <= ( ( nbits >= 200 ) ? ( ( nbits >> 1 ) - 99 ) : 0 ) )
continue;
MBEDTLS_MPI_CHK( mbedtls_mpi_mul_mpi( &ctx->N, &ctx->P, &ctx->Q ) );
if( mbedtls_mpi_bitlen( &ctx->N ) != nbits )
continue;
if( mbedtls_mpi_cmp_mpi( &ctx->P, &ctx->Q ) < 0 )
/* not required by any standards, but some users rely on the fact that P > Q */
if( H.s < 0 )
mbedtls_mpi_swap( &ctx->P, &ctx->Q );
/* Temporarily replace P,Q by P-1, Q-1 */
MBEDTLS_MPI_CHK( mbedtls_mpi_sub_int( &ctx->P, &ctx->P, 1 ) );
MBEDTLS_MPI_CHK( mbedtls_mpi_sub_int( &ctx->Q, &ctx->Q, 1 ) );
MBEDTLS_MPI_CHK( mbedtls_mpi_mul_mpi( &H, &ctx->P, &ctx->Q ) );
/* check GCD( E, (P-1)*(Q-1) ) == 1 (FIPS 186-4 §B.3.1 criterion 2(a)) */
MBEDTLS_MPI_CHK( mbedtls_mpi_gcd( &G, &ctx->E, &H ) );
if( mbedtls_mpi_cmp_int( &G, 1 ) != 0 )
continue;
/* compute smallest possible D = E^-1 mod LCM(P-1, Q-1) (FIPS 186-4 §B.3.1 criterion 3(b)) */
MBEDTLS_MPI_CHK( mbedtls_mpi_gcd( &G, &ctx->P, &ctx->Q ) );
MBEDTLS_MPI_CHK( mbedtls_mpi_div_mpi( &L, NULL, &H, &G ) );
MBEDTLS_MPI_CHK( mbedtls_mpi_inv_mod( &ctx->D, &ctx->E, &L ) );
if( mbedtls_mpi_bitlen( &ctx->D ) <= ( ( nbits + 1 ) / 2 ) ) // (FIPS 186-4 §B.3.1 criterion 3(a))
continue;
break;
}
while( mbedtls_mpi_cmp_int( &G, 1 ) != 0 );
while( 1 );
/* Restore P,Q */
MBEDTLS_MPI_CHK( mbedtls_mpi_add_int( &ctx->P, &ctx->P, 1 ) );
MBEDTLS_MPI_CHK( mbedtls_mpi_add_int( &ctx->Q, &ctx->Q, 1 ) );
MBEDTLS_MPI_CHK( mbedtls_mpi_mul_mpi( &ctx->N, &ctx->P, &ctx->Q ) );
ctx->len = mbedtls_mpi_size( &ctx->N );
#if !defined(MBEDTLS_RSA_NO_CRT)
/*
* D = E^-1 mod ((P-1)*(Q-1))
* DP = D mod (P - 1)
* DQ = D mod (Q - 1)
* QP = Q^-1 mod P
*/
MBEDTLS_MPI_CHK( mbedtls_mpi_inv_mod( &ctx->D, &ctx->E, &H ) );
#if !defined(MBEDTLS_RSA_NO_CRT)
MBEDTLS_MPI_CHK( mbedtls_rsa_deduce_crt( &ctx->P, &ctx->Q, &ctx->D,
&ctx->DP, &ctx->DQ, &ctx->QP ) );
#endif /* MBEDTLS_RSA_NO_CRT */
@ -570,6 +585,7 @@ cleanup:
mbedtls_mpi_free( &H );
mbedtls_mpi_free( &G );
mbedtls_mpi_free( &L );
if( ret != 0 )
{
@ -773,16 +789,38 @@ int mbedtls_rsa_private( mbedtls_rsa_context *ctx,
{
int ret;
size_t olen;
mbedtls_mpi T, T1, T2;
/* Temporary holding the result */
mbedtls_mpi T;
/* Temporaries holding P-1, Q-1 and the
* exponent blinding factor, respectively. */
mbedtls_mpi P1, Q1, R;
#if defined(MBEDTLS_RSA_NO_CRT)
mbedtls_mpi D_blind;
mbedtls_mpi *D = &ctx->D;
#else
#if !defined(MBEDTLS_RSA_NO_CRT)
/* Temporaries holding the results mod p resp. mod q. */
mbedtls_mpi TP, TQ;
/* Temporaries holding the blinded exponents for
* the mod p resp. mod q computation (if used). */
mbedtls_mpi DP_blind, DQ_blind;
/* Pointers to actual exponents to be used - either the unblinded
* or the blinded ones, depending on the presence of a PRNG. */
mbedtls_mpi *DP = &ctx->DP;
mbedtls_mpi *DQ = &ctx->DQ;
#endif
#else
/* Temporary holding the blinded exponent (if used). */
mbedtls_mpi D_blind;
/* Pointer to actual exponent to be used - either the unblinded
* or the blinded one, depending on the presence of a PRNG. */
mbedtls_mpi *D = &ctx->D;
#endif /* MBEDTLS_RSA_NO_CRT */
/* Temporaries holding the initial input and the double
* checked result; should be the same in the end. */
mbedtls_mpi I, C;
if( rsa_check_context( ctx, 1 /* private key checks */,
f_rng != NULL /* blinding y/n */ ) != 0 )
@ -790,8 +828,17 @@ int mbedtls_rsa_private( mbedtls_rsa_context *ctx,
return( MBEDTLS_ERR_RSA_BAD_INPUT_DATA );
}
mbedtls_mpi_init( &T ); mbedtls_mpi_init( &T1 ); mbedtls_mpi_init( &T2 );
mbedtls_mpi_init( &P1 ); mbedtls_mpi_init( &Q1 ); mbedtls_mpi_init( &R );
#if defined(MBEDTLS_THREADING_C)
if( ( ret = mbedtls_mutex_lock( &ctx->mutex ) ) != 0 )
return( ret );
#endif
/* MPI Initialization */
mbedtls_mpi_init( &T );
mbedtls_mpi_init( &P1 );
mbedtls_mpi_init( &Q1 );
mbedtls_mpi_init( &R );
if( f_rng != NULL )
{
@ -803,12 +850,15 @@ int mbedtls_rsa_private( mbedtls_rsa_context *ctx,
#endif
}
#if defined(MBEDTLS_THREADING_C)
if( ( ret = mbedtls_mutex_lock( &ctx->mutex ) ) != 0 )
return( ret );
#if !defined(MBEDTLS_RSA_NO_CRT)
mbedtls_mpi_init( &TP ); mbedtls_mpi_init( &TQ );
#endif
mbedtls_mpi_init( &I );
mbedtls_mpi_init( &C );
/* End of MPI initialization */
MBEDTLS_MPI_CHK( mbedtls_mpi_read_binary( &T, input, ctx->len ) );
if( mbedtls_mpi_cmp_mpi( &T, &ctx->N ) >= 0 )
{
@ -816,6 +866,8 @@ int mbedtls_rsa_private( mbedtls_rsa_context *ctx,
goto cleanup;
}
MBEDTLS_MPI_CHK( mbedtls_mpi_copy( &I, &T ) );
if( f_rng != NULL )
{
/*
@ -874,24 +926,25 @@ int mbedtls_rsa_private( mbedtls_rsa_context *ctx,
/*
* Faster decryption using the CRT
*
* T1 = input ^ dP mod P
* T2 = input ^ dQ mod Q
* TP = input ^ dP mod P
* TQ = input ^ dQ mod Q
*/
MBEDTLS_MPI_CHK( mbedtls_mpi_exp_mod( &T1, &T, DP, &ctx->P, &ctx->RP ) );
MBEDTLS_MPI_CHK( mbedtls_mpi_exp_mod( &T2, &T, DQ, &ctx->Q, &ctx->RQ ) );
MBEDTLS_MPI_CHK( mbedtls_mpi_exp_mod( &TP, &T, DP, &ctx->P, &ctx->RP ) );
MBEDTLS_MPI_CHK( mbedtls_mpi_exp_mod( &TQ, &T, DQ, &ctx->Q, &ctx->RQ ) );
/*
* T = (T1 - T2) * (Q^-1 mod P) mod P
* T = (TP - TQ) * (Q^-1 mod P) mod P
*/
MBEDTLS_MPI_CHK( mbedtls_mpi_sub_mpi( &T, &T1, &T2 ) );
MBEDTLS_MPI_CHK( mbedtls_mpi_mul_mpi( &T1, &T, &ctx->QP ) );
MBEDTLS_MPI_CHK( mbedtls_mpi_mod_mpi( &T, &T1, &ctx->P ) );
MBEDTLS_MPI_CHK( mbedtls_mpi_sub_mpi( &T, &TP, &TQ ) );
MBEDTLS_MPI_CHK( mbedtls_mpi_mul_mpi( &TP, &T, &ctx->QP ) );
MBEDTLS_MPI_CHK( mbedtls_mpi_mod_mpi( &T, &TP, &ctx->P ) );
/*
* T = T2 + T * Q
* T = TQ + T * Q
*/
MBEDTLS_MPI_CHK( mbedtls_mpi_mul_mpi( &T1, &T, &ctx->Q ) );
MBEDTLS_MPI_CHK( mbedtls_mpi_add_mpi( &T, &T2, &T1 ) );
MBEDTLS_MPI_CHK( mbedtls_mpi_mul_mpi( &TP, &T, &ctx->Q ) );
MBEDTLS_MPI_CHK( mbedtls_mpi_add_mpi( &T, &TQ, &TP ) );
#endif /* MBEDTLS_RSA_NO_CRT */
if( f_rng != NULL )
@ -904,6 +957,15 @@ int mbedtls_rsa_private( mbedtls_rsa_context *ctx,
MBEDTLS_MPI_CHK( mbedtls_mpi_mod_mpi( &T, &T, &ctx->N ) );
}
/* Verify the result to prevent glitching attacks. */
MBEDTLS_MPI_CHK( mbedtls_mpi_exp_mod( &C, &T, &ctx->E,
&ctx->N, &ctx->RN ) );
if( mbedtls_mpi_cmp_mpi( &C, &I ) != 0 )
{
ret = MBEDTLS_ERR_RSA_VERIFY_FAILED;
goto cleanup;
}
olen = ctx->len;
MBEDTLS_MPI_CHK( mbedtls_mpi_write_binary( &T, output, olen ) );
@ -913,8 +975,9 @@ cleanup:
return( MBEDTLS_ERR_THREADING_MUTEX_ERROR );
#endif
mbedtls_mpi_free( &T ); mbedtls_mpi_free( &T1 ); mbedtls_mpi_free( &T2 );
mbedtls_mpi_free( &P1 ); mbedtls_mpi_free( &Q1 ); mbedtls_mpi_free( &R );
mbedtls_mpi_free( &P1 );
mbedtls_mpi_free( &Q1 );
mbedtls_mpi_free( &R );
if( f_rng != NULL )
{
@ -926,6 +989,15 @@ cleanup:
#endif
}
mbedtls_mpi_free( &T );
#if !defined(MBEDTLS_RSA_NO_CRT)
mbedtls_mpi_free( &TP ); mbedtls_mpi_free( &TQ );
#endif
mbedtls_mpi_free( &C );
mbedtls_mpi_free( &I );
if( ret != 0 )
return( MBEDTLS_ERR_RSA_PRIVATE_FAILED + ret );
@ -984,7 +1056,7 @@ static int mgf_mask( unsigned char *dst, size_t dlen, unsigned char *src,
}
exit:
mbedtls_zeroize( mask, sizeof( mask ) );
mbedtls_platform_zeroize( mask, sizeof( mask ) );
return( ret );
}
@ -1298,8 +1370,8 @@ int mbedtls_rsa_rsaes_oaep_decrypt( mbedtls_rsa_context *ctx,
ret = 0;
cleanup:
mbedtls_zeroize( buf, sizeof( buf ) );
mbedtls_zeroize( lhash, sizeof( lhash ) );
mbedtls_platform_zeroize( buf, sizeof( buf ) );
mbedtls_platform_zeroize( lhash, sizeof( lhash ) );
return( ret );
}
@ -1396,7 +1468,7 @@ int mbedtls_rsa_rsaes_pkcs1_v15_decrypt( mbedtls_rsa_context *ctx,
ret = 0;
cleanup:
mbedtls_zeroize( buf, sizeof( buf ) );
mbedtls_platform_zeroize( buf, sizeof( buf ) );
return( ret );
}
@ -1527,7 +1599,7 @@ int mbedtls_rsa_rsassa_pss_sign( mbedtls_rsa_context *ctx,
p += hlen;
*p++ = 0xBC;
mbedtls_zeroize( salt, sizeof( salt ) );
mbedtls_platform_zeroize( salt, sizeof( salt ) );
exit:
mbedtls_md_free( &md_ctx );
@ -1669,7 +1741,7 @@ static int rsa_rsassa_pkcs1_v15_encode( mbedtls_md_type_t md_alg,
* after the initial bounds check. */
if( p != dst + dst_len )
{
mbedtls_zeroize( dst, dst_len );
mbedtls_platform_zeroize( dst, dst_len );
return( MBEDTLS_ERR_RSA_BAD_INPUT_DATA );
}
@ -2006,13 +2078,13 @@ cleanup:
if( encoded != NULL )
{
mbedtls_zeroize( encoded, sig_len );
mbedtls_platform_zeroize( encoded, sig_len );
mbedtls_free( encoded );
}
if( encoded_expected != NULL )
{
mbedtls_zeroize( encoded_expected, sig_len );
mbedtls_platform_zeroize( encoded_expected, sig_len );
mbedtls_free( encoded_expected );
}
@ -2222,7 +2294,8 @@ int mbedtls_rsa_self_test( int verbose )
if( verbose != 0 )
mbedtls_printf( "failed\n" );
return( 1 );
ret = 1;
goto cleanup;
}
if( verbose != 0 )
@ -2237,7 +2310,8 @@ int mbedtls_rsa_self_test( int verbose )
if( verbose != 0 )
mbedtls_printf( "failed\n" );
return( 1 );
ret = 1;
goto cleanup;
}
if( verbose != 0 )
@ -2250,7 +2324,8 @@ int mbedtls_rsa_self_test( int verbose )
if( verbose != 0 )
mbedtls_printf( "failed\n" );
return( 1 );
ret = 1;
goto cleanup;
}
if( memcmp( rsa_decrypted, rsa_plaintext, len ) != 0 )
@ -2258,7 +2333,8 @@ int mbedtls_rsa_self_test( int verbose )
if( verbose != 0 )
mbedtls_printf( "failed\n" );
return( 1 );
ret = 1;
goto cleanup;
}
if( verbose != 0 )
@ -2283,7 +2359,8 @@ int mbedtls_rsa_self_test( int verbose )
if( verbose != 0 )
mbedtls_printf( "failed\n" );
return( 1 );
ret = 1;
goto cleanup;
}
if( verbose != 0 )
@ -2296,7 +2373,8 @@ int mbedtls_rsa_self_test( int verbose )
if( verbose != 0 )
mbedtls_printf( "failed\n" );
return( 1 );
ret = 1;
goto cleanup;
}
if( verbose != 0 )

8
library/sha1.c
View file

@ -33,6 +33,7 @@
#if defined(MBEDTLS_SHA1_C)
#include "mbedtls/sha1.h"
#include "mbedtls/platform_util.h"
#include <string.h>
@ -47,11 +48,6 @@
#if !defined(MBEDTLS_SHA1_ALT)
/* Implementation that should never be optimized out by the compiler */
static void mbedtls_zeroize( void *v, size_t n ) {
volatile unsigned char *p = (unsigned char*)v; while( n-- ) *p++ = 0;
}
/*
* 32-bit integer manipulation macros (big endian)
*/
@ -85,7 +81,7 @@ void mbedtls_sha1_free( mbedtls_sha1_context *ctx )
if( ctx == NULL )
return;
mbedtls_zeroize( ctx, sizeof( mbedtls_sha1_context ) );
mbedtls_platform_zeroize( ctx, sizeof( mbedtls_sha1_context ) );
}
void mbedtls_sha1_clone( mbedtls_sha1_context *dst,

8
library/sha256.c
View file

@ -33,6 +33,7 @@
#if defined(MBEDTLS_SHA256_C)
#include "mbedtls/sha256.h"
#include "mbedtls/platform_util.h"
#include <string.h>
@ -50,11 +51,6 @@
#if !defined(MBEDTLS_SHA256_ALT)
/* Implementation that should never be optimized out by the compiler */
static void mbedtls_zeroize( void *v, size_t n ) {
volatile unsigned char *p = v; while( n-- ) *p++ = 0;
}
/*
* 32-bit integer manipulation macros (big endian)
*/
@ -88,7 +84,7 @@ void mbedtls_sha256_free( mbedtls_sha256_context *ctx )
if( ctx == NULL )
return;
mbedtls_zeroize( ctx, sizeof( mbedtls_sha256_context ) );
mbedtls_platform_zeroize( ctx, sizeof( mbedtls_sha256_context ) );
}
void mbedtls_sha256_clone( mbedtls_sha256_context *dst,

8
library/sha512.c
View file

@ -33,6 +33,7 @@
#if defined(MBEDTLS_SHA512_C)
#include "mbedtls/sha512.h"
#include "mbedtls/platform_util.h"
#if defined(_MSC_VER) || defined(__WATCOMC__)
#define UL64(x) x##ui64
@ -56,11 +57,6 @@
#if !defined(MBEDTLS_SHA512_ALT)
/* Implementation that should never be optimized out by the compiler */
static void mbedtls_zeroize( void *v, size_t n ) {
volatile unsigned char *p = v; while( n-- ) *p++ = 0;
}
/*
* 64-bit integer manipulation macros (big endian)
*/
@ -102,7 +98,7 @@ void mbedtls_sha512_free( mbedtls_sha512_context *ctx )
if( ctx == NULL )
return;
mbedtls_zeroize( ctx, sizeof( mbedtls_sha512_context ) );
mbedtls_platform_zeroize( ctx, sizeof( mbedtls_sha512_context ) );
}
void mbedtls_sha512_clone( mbedtls_sha512_context *dst,

189
library/ssl_cli.c
View file

@ -48,10 +48,7 @@
#endif
#if defined(MBEDTLS_SSL_SESSION_TICKETS)
/* Implementation that should never be optimized out by the compiler */
static void mbedtls_zeroize( void *v, size_t n ) {
volatile unsigned char *p = v; while( n-- ) *p++ = 0;
}
#include "mbedtls/platform_util.h"
#endif
#if defined(MBEDTLS_SSL_SERVER_NAME_INDICATION)
@ -355,7 +352,7 @@ static void ssl_write_supported_point_formats_ext( mbedtls_ssl_context *ssl,
*olen = 6;
}
#endif /* MBEDTLS_ECDH_C || MBEDTLS_ECDSA_C ||
#endif /* MBEDTLS_ECDH_C || MBEDTLS_ECDSA_C ||
MBEDTLS_KEY_EXCHANGE_ECJPAKE_ENABLED */
#if defined(MBEDTLS_KEY_EXCHANGE_ECJPAKE_ENABLED)
@ -717,6 +714,49 @@ static int ssl_generate_random( mbedtls_ssl_context *ssl )
return( 0 );
}
/**
* \brief Validate cipher suite against config in SSL context.
*
* \param suite_info cipher suite to validate
* \param ssl SSL context
* \param min_minor_ver Minimal minor version to accept a cipher suite
* \param max_minor_ver Maximal minor version to accept a cipher suite
*
* \return 0 if valid, else 1
*/
static int ssl_validate_ciphersuite( const mbedtls_ssl_ciphersuite_t * suite_info,
const mbedtls_ssl_context * ssl,
int min_minor_ver, int max_minor_ver )
{
(void) ssl;
if( suite_info == NULL )
return( 1 );
if( suite_info->min_minor_ver > max_minor_ver ||
suite_info->max_minor_ver < min_minor_ver )
return( 1 );
#if defined(MBEDTLS_SSL_PROTO_DTLS)
if( ssl->conf->transport == MBEDTLS_SSL_TRANSPORT_DATAGRAM &&
( suite_info->flags & MBEDTLS_CIPHERSUITE_NODTLS ) )
return( 1 );
#endif
#if defined(MBEDTLS_ARC4_C)
if( ssl->conf->arc4_disabled == MBEDTLS_SSL_ARC4_DISABLED &&
suite_info->cipher == MBEDTLS_CIPHER_ARC4_128 )
return( 1 );
#endif
#if defined(MBEDTLS_KEY_EXCHANGE_ECJPAKE_ENABLED)
if( suite_info->key_exchange == MBEDTLS_KEY_EXCHANGE_ECJPAKE &&
mbedtls_ecjpake_check( &ssl->handshake->ecjpake_ctx ) != 0 )
return( 1 );
#endif
return( 0 );
}
static int ssl_write_client_hello( mbedtls_ssl_context *ssl )
{
int ret;
@ -869,31 +909,11 @@ static int ssl_write_client_hello( mbedtls_ssl_context *ssl )
{
ciphersuite_info = mbedtls_ssl_ciphersuite_from_id( ciphersuites[i] );
if( ciphersuite_info == NULL )
if( ssl_validate_ciphersuite( ciphersuite_info, ssl,
ssl->conf->min_minor_ver,
ssl->conf->max_minor_ver ) != 0 )
continue;
if( ciphersuite_info->min_minor_ver > ssl->conf->max_minor_ver ||
ciphersuite_info->max_minor_ver < ssl->conf->min_minor_ver )
continue;
#if defined(MBEDTLS_SSL_PROTO_DTLS)
if( ssl->conf->transport == MBEDTLS_SSL_TRANSPORT_DATAGRAM &&
( ciphersuite_info->flags & MBEDTLS_CIPHERSUITE_NODTLS ) )
continue;
#endif
#if defined(MBEDTLS_ARC4_C)
if( ssl->conf->arc4_disabled == MBEDTLS_SSL_ARC4_DISABLED &&
ciphersuite_info->cipher == MBEDTLS_CIPHER_ARC4_128 )
continue;
#endif
#if defined(MBEDTLS_KEY_EXCHANGE_ECJPAKE_ENABLED)
if( ciphersuite_info->key_exchange == MBEDTLS_KEY_EXCHANGE_ECJPAKE &&
mbedtls_ecjpake_check( &ssl->handshake->ecjpake_ctx ) != 0 )
continue;
#endif
MBEDTLS_SSL_DEBUG_MSG( 3, ( "client hello, add ciphersuite: %04x",
ciphersuites[i] ) );
@ -902,6 +922,8 @@ static int ssl_write_client_hello( mbedtls_ssl_context *ssl )
*p++ = (unsigned char)( ciphersuites[i] );
}
MBEDTLS_SSL_DEBUG_MSG( 3, ( "client hello, got %d ciphersuites (excluding SCSVs)", n ) );
/*
* Add TLS_EMPTY_RENEGOTIATION_INFO_SCSV
*/
@ -909,6 +931,7 @@ static int ssl_write_client_hello( mbedtls_ssl_context *ssl )
if( ssl->renego_status == MBEDTLS_SSL_INITIAL_HANDSHAKE )
#endif
{
MBEDTLS_SSL_DEBUG_MSG( 3, ( "adding EMPTY_RENEGOTIATION_INFO_SCSV" ) );
*p++ = (unsigned char)( MBEDTLS_SSL_EMPTY_RENEGOTIATION_INFO >> 8 );
*p++ = (unsigned char)( MBEDTLS_SSL_EMPTY_RENEGOTIATION_INFO );
n++;
@ -928,8 +951,6 @@ static int ssl_write_client_hello( mbedtls_ssl_context *ssl )
*q++ = (unsigned char)( n >> 7 );
*q++ = (unsigned char)( n << 1 );
MBEDTLS_SSL_DEBUG_MSG( 3, ( "client hello, got %d ciphersuites", n ) );
#if defined(MBEDTLS_ZLIB_SUPPORT)
offer_compress = 1;
#else
@ -937,7 +958,7 @@ static int ssl_write_client_hello( mbedtls_ssl_context *ssl )
#endif
/*
* We don't support compression with DTLS right now: is many records come
* We don't support compression with DTLS right now: if many records come
* in the same datagram, uncompressing one could overwrite the next one.
* We don't want to add complexity for handling that case unless there is
* an actual need for it.
@ -1260,7 +1281,7 @@ static int ssl_parse_supported_point_formats_ext( mbedtls_ssl_context *ssl,
MBEDTLS_SSL_ALERT_MSG_HANDSHAKE_FAILURE );
return( MBEDTLS_ERR_SSL_BAD_HS_SERVER_HELLO );
}
#endif /* MBEDTLS_ECDH_C || MBEDTLS_ECDSA_C ||
#endif /* MBEDTLS_ECDH_C || MBEDTLS_ECDSA_C ||
MBEDTLS_KEY_EXCHANGE_ECJPAKE_ENABLED */
#if defined(MBEDTLS_KEY_EXCHANGE_ECJPAKE_ENABLED)
@ -1689,22 +1710,9 @@ static int ssl_parse_server_hello( mbedtls_ssl_context *ssl )
MBEDTLS_SSL_DEBUG_MSG( 3, ( "server hello, chosen ciphersuite: %04x", i ) );
MBEDTLS_SSL_DEBUG_MSG( 3, ( "server hello, compress alg.: %d", buf[37 + n] ) );
suite_info = mbedtls_ssl_ciphersuite_from_id( ssl->session_negotiate->ciphersuite );
if( suite_info == NULL
#if defined(MBEDTLS_ARC4_C)
|| ( ssl->conf->arc4_disabled &&
suite_info->cipher == MBEDTLS_CIPHER_ARC4_128 )
#endif
)
{
MBEDTLS_SSL_DEBUG_MSG( 1, ( "bad server hello message" ) );
mbedtls_ssl_send_alert_message( ssl, MBEDTLS_SSL_ALERT_LEVEL_FATAL,
MBEDTLS_SSL_ALERT_MSG_ILLEGAL_PARAMETER );
return( MBEDTLS_ERR_SSL_BAD_HS_SERVER_HELLO );
}
MBEDTLS_SSL_DEBUG_MSG( 3, ( "server hello, chosen ciphersuite: %s", suite_info->name ) );
/*
* Perform cipher suite validation in same way as in ssl_write_client_hello.
*/
i = 0;
while( 1 )
{
@ -1723,6 +1731,17 @@ static int ssl_parse_server_hello( mbedtls_ssl_context *ssl )
}
}
suite_info = mbedtls_ssl_ciphersuite_from_id( ssl->session_negotiate->ciphersuite );
if( ssl_validate_ciphersuite( suite_info, ssl, ssl->minor_ver, ssl->minor_ver ) != 0 )
{
MBEDTLS_SSL_DEBUG_MSG( 1, ( "bad server hello message" ) );
mbedtls_ssl_send_alert_message( ssl, MBEDTLS_SSL_ALERT_LEVEL_FATAL,
MBEDTLS_SSL_ALERT_MSG_ILLEGAL_PARAMETER );
return( MBEDTLS_ERR_SSL_BAD_HS_SERVER_HELLO );
}
MBEDTLS_SSL_DEBUG_MSG( 3, ( "server hello, chosen ciphersuite: %s", suite_info->name ) );
if( comp != MBEDTLS_SSL_COMPRESS_NULL
#if defined(MBEDTLS_ZLIB_SUPPORT)
&& comp != MBEDTLS_SSL_COMPRESS_DEFLATE
@ -2057,10 +2076,16 @@ static int ssl_parse_server_psk_hint( mbedtls_ssl_context *ssl,
*
* opaque psk_identity_hint<0..2^16-1>;
*/
if( (*p) > end - 2 )
{
MBEDTLS_SSL_DEBUG_MSG( 1, ( "bad server key exchange message "
"(psk_identity_hint length)" ) );
return( MBEDTLS_ERR_SSL_BAD_HS_SERVER_KEY_EXCHANGE );
}
len = (*p)[0] << 8 | (*p)[1];
*p += 2;
if( (*p) + len > end )
if( (*p) > end - len )
{
MBEDTLS_SSL_DEBUG_MSG( 1, ( "bad server key exchange message "
"(psk_identity_hint length)" ) );
@ -2478,10 +2503,18 @@ static int ssl_parse_server_key_exchange( mbedtls_ssl_context *ssl )
/*
* Read signature
*/
if( p > end - 2 )
{
MBEDTLS_SSL_DEBUG_MSG( 1, ( "bad server key exchange message" ) );
mbedtls_ssl_send_alert_message( ssl, MBEDTLS_SSL_ALERT_LEVEL_FATAL,
MBEDTLS_SSL_ALERT_MSG_DECODE_ERROR );
return( MBEDTLS_ERR_SSL_BAD_HS_SERVER_KEY_EXCHANGE );
}
sig_len = ( p[0] << 8 ) | p[1];
p += 2;
if( end != p + sig_len )
if( p != end - sig_len )
{
MBEDTLS_SSL_DEBUG_MSG( 1, ( "bad server key exchange message" ) );
mbedtls_ssl_send_alert_message( ssl, MBEDTLS_SSL_ALERT_LEVEL_FATAL,
@ -2658,10 +2691,27 @@ static int ssl_parse_certificate_request( mbedtls_ssl_context *ssl )
buf = ssl->in_msg;
/* certificate_types */
if( ssl->in_hslen <= mbedtls_ssl_hs_hdr_len( ssl ) )
{
MBEDTLS_SSL_DEBUG_MSG( 1, ( "bad certificate request message" ) );
mbedtls_ssl_send_alert_message( ssl, MBEDTLS_SSL_ALERT_LEVEL_FATAL,
MBEDTLS_SSL_ALERT_MSG_DECODE_ERROR );
return( MBEDTLS_ERR_SSL_BAD_HS_CERTIFICATE_REQUEST );
}
cert_type_len = buf[mbedtls_ssl_hs_hdr_len( ssl )];
n = cert_type_len;
if( ssl->in_hslen < mbedtls_ssl_hs_hdr_len( ssl ) + 2 + n )
/*
* In the subsequent code there are two paths that read from buf:
* * the length of the signature algorithms field (if minor version of
* SSL is 3),
* * distinguished name length otherwise.
* Both reach at most the index:
* ...hdr_len + 2 + n,
* therefore the buffer length at this point must be greater than that
* regardless of the actual code path.
*/
if( ssl->in_hslen <= mbedtls_ssl_hs_hdr_len( ssl ) + 2 + n )
{
MBEDTLS_SSL_DEBUG_MSG( 1, ( "bad certificate request message" ) );
mbedtls_ssl_send_alert_message( ssl, MBEDTLS_SSL_ALERT_LEVEL_FATAL,
@ -2676,9 +2726,32 @@ static int ssl_parse_certificate_request( mbedtls_ssl_context *ssl )
size_t sig_alg_len = ( ( buf[mbedtls_ssl_hs_hdr_len( ssl ) + 1 + n] << 8 )
| ( buf[mbedtls_ssl_hs_hdr_len( ssl ) + 2 + n] ) );
#if defined(MBEDTLS_DEBUG_C)
unsigned char* sig_alg = buf + mbedtls_ssl_hs_hdr_len( ssl ) + 3 + n;
unsigned char* sig_alg;
size_t i;
#endif
/*
* The furthest access in buf is in the loop few lines below:
* sig_alg[i + 1],
* where:
* sig_alg = buf + ...hdr_len + 3 + n,
* max(i) = sig_alg_len - 1.
* Therefore the furthest access is:
* buf[...hdr_len + 3 + n + sig_alg_len - 1 + 1],
* which reduces to:
* buf[...hdr_len + 3 + n + sig_alg_len],
* which is one less than we need the buf to be.
*/
if( ssl->in_hslen <= mbedtls_ssl_hs_hdr_len( ssl ) + 3 + n + sig_alg_len )
{
MBEDTLS_SSL_DEBUG_MSG( 1, ( "bad certificate request message" ) );
mbedtls_ssl_send_alert_message( ssl, MBEDTLS_SSL_ALERT_LEVEL_FATAL,
MBEDTLS_SSL_ALERT_MSG_DECODE_ERROR );
return( MBEDTLS_ERR_SSL_BAD_HS_CERTIFICATE_REQUEST );
}
#if defined(MBEDTLS_DEBUG_C)
sig_alg = buf + mbedtls_ssl_hs_hdr_len( ssl ) + 3 + n;
for( i = 0; i < sig_alg_len; i += 2 )
{
MBEDTLS_SSL_DEBUG_MSG( 3, ( "Supported Signature Algorithm found: %d"
@ -2687,14 +2760,6 @@ static int ssl_parse_certificate_request( mbedtls_ssl_context *ssl )
#endif
n += 2 + sig_alg_len;
if( ssl->in_hslen < mbedtls_ssl_hs_hdr_len( ssl ) + 2 + n )
{
MBEDTLS_SSL_DEBUG_MSG( 1, ( "bad certificate request message" ) );
mbedtls_ssl_send_alert_message( ssl, MBEDTLS_SSL_ALERT_LEVEL_FATAL,
MBEDTLS_SSL_ALERT_MSG_DECODE_ERROR );
return( MBEDTLS_ERR_SSL_BAD_HS_CERTIFICATE_REQUEST );
}
}
#endif /* MBEDTLS_SSL_PROTO_TLS1_2 */
@ -3274,8 +3339,8 @@ static int ssl_parse_new_session_ticket( mbedtls_ssl_context *ssl )
if( ticket_len == 0 )
return( 0 );
mbedtls_zeroize( ssl->session_negotiate->ticket,
ssl->session_negotiate->ticket_len );
mbedtls_platform_zeroize( ssl->session_negotiate->ticket,
ssl->session_negotiate->ticket_len );
mbedtls_free( ssl->session_negotiate->ticket );
ssl->session_negotiate->ticket = NULL;
ssl->session_negotiate->ticket_len = 0;

10
library/ssl_cookie.c
View file

@ -40,14 +40,10 @@
#include "mbedtls/ssl_cookie.h"
#include "mbedtls/ssl_internal.h"
#include "mbedtls/platform_util.h"
#include <string.h>
/* Implementation that should never be optimized out by the compiler */
static void mbedtls_zeroize( void *v, size_t n ) {
volatile unsigned char *p = v; while( n-- ) *p++ = 0;
}
/*
* If DTLS is in use, then at least one of SHA-1, SHA-256, SHA-512 is
* available. Try SHA-256 first, 512 wastes resources since we need to stay
@ -101,7 +97,7 @@ void mbedtls_ssl_cookie_free( mbedtls_ssl_cookie_ctx *ctx )
mbedtls_mutex_free( &ctx->mutex );
#endif
mbedtls_zeroize( ctx, sizeof( mbedtls_ssl_cookie_ctx ) );
mbedtls_platform_zeroize( ctx, sizeof( mbedtls_ssl_cookie_ctx ) );
}
int mbedtls_ssl_cookie_setup( mbedtls_ssl_cookie_ctx *ctx,
@ -122,7 +118,7 @@ int mbedtls_ssl_cookie_setup( mbedtls_ssl_cookie_ctx *ctx,
if( ret != 0 )
return( ret );
mbedtls_zeroize( key, sizeof( key ) );
mbedtls_platform_zeroize( key, sizeof( key ) );
return( 0 );
}

26
library/ssl_srv.c
View file

@ -38,6 +38,7 @@
#include "mbedtls/debug.h"
#include "mbedtls/ssl.h"
#include "mbedtls/ssl_internal.h"
#include "mbedtls/platform_util.h"
#include <string.h>
@ -49,13 +50,6 @@
#include "mbedtls/platform_time.h"
#endif
#if defined(MBEDTLS_SSL_SESSION_TICKETS)
/* Implementation that should never be optimized out by the compiler */
static void mbedtls_zeroize( void *v, size_t n ) {
volatile unsigned char *p = v; while( n-- ) *p++ = 0;
}
#endif
#if defined(MBEDTLS_SSL_DTLS_HELLO_VERIFY)
int mbedtls_ssl_set_client_transport_id( mbedtls_ssl_context *ssl,
const unsigned char *info,
@ -553,7 +547,7 @@ static int ssl_parse_session_ticket_ext( mbedtls_ssl_context *ssl,
memcpy( ssl->session_negotiate, &session, sizeof( mbedtls_ssl_session ) );
/* Zeroize instead of free as we copied the content */
mbedtls_zeroize( &session, sizeof( mbedtls_ssl_session ) );
mbedtls_platform_zeroize( &session, sizeof( mbedtls_ssl_session ) );
MBEDTLS_SSL_DEBUG_MSG( 3, ( "session successfully restored from ticket" ) );
@ -793,7 +787,7 @@ static int ssl_ciphersuite_match( mbedtls_ssl_context *ssl, int suite_id,
const mbedtls_ssl_ciphersuite_t *suite_info;
#if defined(MBEDTLS_SSL_PROTO_TLS1_2) && \
defined(MBEDTLS_KEY_EXCHANGE__WITH_CERT__ENABLED)
defined(MBEDTLS_KEY_EXCHANGE__WITH_CERT__ENABLED)
mbedtls_pk_type_t sig_type;
#endif
@ -2961,7 +2955,7 @@ static int ssl_write_server_key_exchange( mbedtls_ssl_context *ssl )
return( ret );
}
#if defined(MBEDTLS_KEY_EXCHANGE__WITH_SERVER_SIGNATURE__ENABLED)
#if defined(MBEDTLS_KEY_EXCHANGE__WITH_SERVER_SIGNATURE__ENABLED)
dig_signed = p;
dig_signed_len = len;
#endif
@ -3050,7 +3044,7 @@ curve_matching_done:
/*
* 3.1: Choose hash algorithm:
* A: For TLS 1.2, obey signature-hash-algorithm extension
* A: For TLS 1.2, obey signature-hash-algorithm extension
* to choose appropriate hash.
* B: For SSL3, TLS1.0, TLS1.1 and ECDHE_ECDSA, use SHA1
* (RFC 4492, Sec. 5.4)
@ -3071,7 +3065,7 @@ curve_matching_done:
sig_alg ) ) == MBEDTLS_MD_NONE )
{
MBEDTLS_SSL_DEBUG_MSG( 1, ( "should never happen" ) );
/* (... because we choose a cipher suite
/* (... because we choose a cipher suite
* only if there is a matching hash.) */
return( MBEDTLS_ERR_SSL_INTERNAL_ERROR );
}
@ -3750,7 +3744,10 @@ static int ssl_parse_certificate_verify( mbedtls_ssl_context *ssl )
/* Read the message without adding it to the checksum */
do {
if( ( ret = mbedtls_ssl_read_record_layer( ssl ) ) != 0 )
do ret = mbedtls_ssl_read_record_layer( ssl );
while( ret == MBEDTLS_ERR_SSL_CONTINUE_PROCESSING );
if( ret != 0 )
{
MBEDTLS_SSL_DEBUG_RET( 1, ( "mbedtls_ssl_read_record_layer" ), ret );
return( ret );
@ -3758,7 +3755,8 @@ static int ssl_parse_certificate_verify( mbedtls_ssl_context *ssl )
ret = mbedtls_ssl_handle_message_type( ssl );
} while( MBEDTLS_ERR_SSL_NON_FATAL == ret );
} while( MBEDTLS_ERR_SSL_NON_FATAL == ret ||
MBEDTLS_ERR_SSL_CONTINUE_PROCESSING == ret );
if( 0 != ret )
{

10
library/ssl_ticket.c
View file

@ -36,14 +36,10 @@
#endif
#include "mbedtls/ssl_ticket.h"
#include "mbedtls/platform_util.h"
#include <string.h>
/* Implementation that should never be optimized out by the compiler */
static void mbedtls_zeroize( void *v, size_t n ) {
volatile unsigned char *p = v; while( n-- ) *p++ = 0;
}
/*
* Initialze context
*/
@ -83,7 +79,7 @@ static int ssl_ticket_gen_key( mbedtls_ssl_ticket_context *ctx,
mbedtls_cipher_get_key_bitlen( &key->ctx ),
MBEDTLS_ENCRYPT );
mbedtls_zeroize( buf, sizeof( buf ) );
mbedtls_platform_zeroize( buf, sizeof( buf ) );
return( ret );
}
@ -483,7 +479,7 @@ void mbedtls_ssl_ticket_free( mbedtls_ssl_ticket_context *ctx )
mbedtls_mutex_free( &ctx->mutex );
#endif
mbedtls_zeroize( ctx, sizeof( mbedtls_ssl_ticket_context ) );
mbedtls_platform_zeroize( ctx, sizeof( mbedtls_ssl_ticket_context ) );
}
#endif /* MBEDTLS_SSL_TICKET_C */

493
library/ssl_tls.c
View file

@ -46,6 +46,7 @@
#include "mbedtls/debug.h"
#include "mbedtls/ssl.h"
#include "mbedtls/ssl_internal.h"
#include "mbedtls/platform_util.h"
#include <string.h>
@ -53,11 +54,6 @@
#include "mbedtls/oid.h"
#endif
/* Implementation that should never be optimized out by the compiler */
static void mbedtls_zeroize( void *v, size_t n ) {
volatile unsigned char *p = v; while( n-- ) *p++ = 0;
}
/* Length of the "epoch" field in the record header */
static inline size_t ssl_ep_len( const mbedtls_ssl_context *ssl )
{
@ -269,8 +265,8 @@ exit:
mbedtls_md5_free( &md5 );
mbedtls_sha1_free( &sha1 );
mbedtls_zeroize( padding, sizeof( padding ) );
mbedtls_zeroize( sha1sum, sizeof( sha1sum ) );
mbedtls_platform_zeroize( padding, sizeof( padding ) );
mbedtls_platform_zeroize( sha1sum, sizeof( sha1sum ) );
return( ret );
}
@ -367,8 +363,8 @@ static int tls1_prf( const unsigned char *secret, size_t slen,
mbedtls_md_free( &md_ctx );
mbedtls_zeroize( tmp, sizeof( tmp ) );
mbedtls_zeroize( h_i, sizeof( h_i ) );
mbedtls_platform_zeroize( tmp, sizeof( tmp ) );
mbedtls_platform_zeroize( h_i, sizeof( h_i ) );
return( 0 );
}
@ -432,8 +428,8 @@ static int tls_prf_generic( mbedtls_md_type_t md_type,
mbedtls_md_free( &md_ctx );
mbedtls_zeroize( tmp, sizeof( tmp ) );
mbedtls_zeroize( h_i, sizeof( h_i ) );
mbedtls_platform_zeroize( tmp, sizeof( tmp ) );
mbedtls_platform_zeroize( h_i, sizeof( h_i ) );
return( 0 );
}
@ -642,7 +638,8 @@ int mbedtls_ssl_derive_keys( mbedtls_ssl_context *ssl )
return( ret );
}
mbedtls_zeroize( handshake->premaster, sizeof(handshake->premaster) );
mbedtls_platform_zeroize( handshake->premaster,
sizeof(handshake->premaster) );
}
else
MBEDTLS_SSL_DEBUG_MSG( 3, ( "no premaster (session resumed)" ) );
@ -653,7 +650,7 @@ int mbedtls_ssl_derive_keys( mbedtls_ssl_context *ssl )
memcpy( tmp, handshake->randbytes, 64 );
memcpy( handshake->randbytes, tmp + 32, 32 );
memcpy( handshake->randbytes + 32, tmp, 32 );
mbedtls_zeroize( tmp, sizeof( tmp ) );
mbedtls_platform_zeroize( tmp, sizeof( tmp ) );
/*
* SSLv3:
@ -681,7 +678,8 @@ int mbedtls_ssl_derive_keys( mbedtls_ssl_context *ssl )
MBEDTLS_SSL_DEBUG_BUF( 4, "random bytes", handshake->randbytes, 64 );
MBEDTLS_SSL_DEBUG_BUF( 4, "key block", keyblk, 256 );
mbedtls_zeroize( handshake->randbytes, sizeof( handshake->randbytes ) );
mbedtls_platform_zeroize( handshake->randbytes,
sizeof( handshake->randbytes ) );
/*
* Determine the appropriate key, IV and MAC length.
@ -855,8 +853,13 @@ int mbedtls_ssl_derive_keys( mbedtls_ssl_context *ssl )
defined(MBEDTLS_SSL_PROTO_TLS1_2)
if( ssl->minor_ver >= MBEDTLS_SSL_MINOR_VERSION_1 )
{
mbedtls_md_hmac_starts( &transform->md_ctx_enc, mac_enc, mac_key_len );
mbedtls_md_hmac_starts( &transform->md_ctx_dec, mac_dec, mac_key_len );
/* For HMAC-based ciphersuites, initialize the HMAC transforms.
For AEAD-based ciphersuites, there is nothing to do here. */
if( mac_key_len != 0 )
{
mbedtls_md_hmac_starts( &transform->md_ctx_enc, mac_enc, mac_key_len );
mbedtls_md_hmac_starts( &transform->md_ctx_dec, mac_dec, mac_key_len );
}
}
else
#endif
@ -943,7 +946,7 @@ int mbedtls_ssl_derive_keys( mbedtls_ssl_context *ssl )
}
#endif /* MBEDTLS_CIPHER_MODE_CBC */
mbedtls_zeroize( keyblk, sizeof( keyblk ) );
mbedtls_platform_zeroize( keyblk, sizeof( keyblk ) );
#if defined(MBEDTLS_ZLIB_SUPPORT)
// Initialize compression
@ -2103,6 +2106,7 @@ static int ssl_compress_buf( mbedtls_ssl_context *ssl )
{
int ret;
unsigned char *msg_post = ssl->out_msg;
ptrdiff_t bytes_written = ssl->out_msg - ssl->out_buf;
size_t len_pre = ssl->out_msglen;
unsigned char *msg_pre = ssl->compress_buf;
@ -2122,7 +2126,7 @@ static int ssl_compress_buf( mbedtls_ssl_context *ssl )
ssl->transform_out->ctx_deflate.next_in = msg_pre;
ssl->transform_out->ctx_deflate.avail_in = len_pre;
ssl->transform_out->ctx_deflate.next_out = msg_post;
ssl->transform_out->ctx_deflate.avail_out = MBEDTLS_SSL_BUFFER_LEN;
ssl->transform_out->ctx_deflate.avail_out = MBEDTLS_SSL_BUFFER_LEN - bytes_written;
ret = deflate( &ssl->transform_out->ctx_deflate, Z_SYNC_FLUSH );
if( ret != Z_OK )
@ -2132,7 +2136,7 @@ static int ssl_compress_buf( mbedtls_ssl_context *ssl )
}
ssl->out_msglen = MBEDTLS_SSL_BUFFER_LEN -
ssl->transform_out->ctx_deflate.avail_out;
ssl->transform_out->ctx_deflate.avail_out - bytes_written;
MBEDTLS_SSL_DEBUG_MSG( 3, ( "after compression: msglen = %d, ",
ssl->out_msglen ) );
@ -2149,6 +2153,7 @@ static int ssl_decompress_buf( mbedtls_ssl_context *ssl )
{
int ret;
unsigned char *msg_post = ssl->in_msg;
ptrdiff_t header_bytes = ssl->in_msg - ssl->in_buf;
size_t len_pre = ssl->in_msglen;
unsigned char *msg_pre = ssl->compress_buf;
@ -2168,7 +2173,8 @@ static int ssl_decompress_buf( mbedtls_ssl_context *ssl )
ssl->transform_in->ctx_inflate.next_in = msg_pre;
ssl->transform_in->ctx_inflate.avail_in = len_pre;
ssl->transform_in->ctx_inflate.next_out = msg_post;
ssl->transform_in->ctx_inflate.avail_out = MBEDTLS_SSL_MAX_CONTENT_LEN;
ssl->transform_in->ctx_inflate.avail_out = MBEDTLS_SSL_BUFFER_LEN -
header_bytes;
ret = inflate( &ssl->transform_in->ctx_inflate, Z_SYNC_FLUSH );
if( ret != Z_OK )
@ -2177,8 +2183,8 @@ static int ssl_decompress_buf( mbedtls_ssl_context *ssl )
return( MBEDTLS_ERR_SSL_COMPRESSION_FAILED );
}
ssl->in_msglen = MBEDTLS_SSL_MAX_CONTENT_LEN -
ssl->transform_in->ctx_inflate.avail_out;
ssl->in_msglen = MBEDTLS_SSL_BUFFER_LEN -
ssl->transform_in->ctx_inflate.avail_out - header_bytes;
MBEDTLS_SSL_DEBUG_MSG( 3, ( "after decompression: msglen = %d, ",
ssl->in_msglen ) );
@ -2332,7 +2338,10 @@ int mbedtls_ssl_fetch_input( mbedtls_ssl_context *ssl, size_t nb_want )
* that will end up being dropped.
*/
if( ssl_check_timer( ssl ) != 0 )
{
MBEDTLS_SSL_DEBUG_MSG( 2, ( "timer has expired" ) );
ret = MBEDTLS_ERR_SSL_TIMEOUT;
}
else
{
len = MBEDTLS_SSL_BUFFER_LEN - ( ssl->in_hdr - ssl->in_buf );
@ -2434,6 +2443,14 @@ int mbedtls_ssl_fetch_input( mbedtls_ssl_context *ssl, size_t nb_want )
if( ret < 0 )
return( ret );
if ( (size_t)ret > len || ( INT_MAX > SIZE_MAX && ret > SIZE_MAX ) )
{
MBEDTLS_SSL_DEBUG_MSG( 1,
( "f_recv returned %d bytes but only %lu were requested",
ret, (unsigned long)len ) );
return( MBEDTLS_ERR_SSL_INTERNAL_ERROR );
}
ssl->in_left += ret;
}
}
@ -2481,6 +2498,14 @@ int mbedtls_ssl_flush_output( mbedtls_ssl_context *ssl )
if( ret <= 0 )
return( ret );
if( (size_t)ret > ssl->out_left || ( INT_MAX > SIZE_MAX && ret > SIZE_MAX ) )
{
MBEDTLS_SSL_DEBUG_MSG( 1,
( "f_send returned %d bytes but only %lu bytes were sent",
ret, (unsigned long)ssl->out_left ) );
return( MBEDTLS_ERR_SSL_INTERNAL_ERROR );
}
ssl->out_left -= ret;
}
@ -3064,7 +3089,7 @@ static int ssl_reassemble_dtls_handshake( mbedtls_ssl_context *ssl )
if( ssl_bitmask_check( bitmask, msg_len ) != 0 )
{
MBEDTLS_SSL_DEBUG_MSG( 2, ( "message is not complete yet" ) );
return( MBEDTLS_ERR_SSL_WANT_READ );
return( MBEDTLS_ERR_SSL_CONTINUE_PROCESSING );
}
MBEDTLS_SSL_DEBUG_MSG( 2, ( "handshake message completed" ) );
@ -3141,9 +3166,11 @@ int mbedtls_ssl_prepare_handshake_record( mbedtls_ssl_context *ssl )
int ret;
unsigned int recv_msg_seq = ( ssl->in_msg[4] << 8 ) | ssl->in_msg[5];
/* ssl->handshake is NULL when receiving ClientHello for renego */
if( ssl->handshake != NULL &&
recv_msg_seq != ssl->handshake->in_msg_seq )
( ( ssl->state != MBEDTLS_SSL_HANDSHAKE_OVER &&
recv_msg_seq != ssl->handshake->in_msg_seq ) ||
( ssl->state == MBEDTLS_SSL_HANDSHAKE_OVER &&
ssl->in_msg[0] != MBEDTLS_SSL_HS_CLIENT_HELLO ) ) )
{
/* Retransmit only on last message from previous flight, to avoid
* too many retransmissions.
@ -3170,7 +3197,7 @@ int mbedtls_ssl_prepare_handshake_record( mbedtls_ssl_context *ssl )
ssl->handshake->in_msg_seq ) );
}
return( MBEDTLS_ERR_SSL_WANT_READ );
return( MBEDTLS_ERR_SSL_CONTINUE_PROCESSING );
}
/* Wait until message completion to increment in_msg_seq */
@ -3573,81 +3600,23 @@ static int ssl_parse_record_header( mbedtls_ssl_context *ssl )
return( MBEDTLS_ERR_SSL_INVALID_RECORD );
}
/* Check length against bounds of the current transform and version */
if( ssl->transform_in == NULL )
{
if( ssl->in_msglen < 1 ||
ssl->in_msglen > MBEDTLS_SSL_MAX_CONTENT_LEN )
{
MBEDTLS_SSL_DEBUG_MSG( 1, ( "bad message length" ) );
return( MBEDTLS_ERR_SSL_INVALID_RECORD );
}
}
else
{
if( ssl->in_msglen < ssl->transform_in->minlen )
{
MBEDTLS_SSL_DEBUG_MSG( 1, ( "bad message length" ) );
return( MBEDTLS_ERR_SSL_INVALID_RECORD );
}
#if defined(MBEDTLS_SSL_PROTO_SSL3)
if( ssl->minor_ver == MBEDTLS_SSL_MINOR_VERSION_0 &&
ssl->in_msglen > ssl->transform_in->minlen + MBEDTLS_SSL_MAX_CONTENT_LEN )
{
MBEDTLS_SSL_DEBUG_MSG( 1, ( "bad message length" ) );
return( MBEDTLS_ERR_SSL_INVALID_RECORD );
}
#endif
#if defined(MBEDTLS_SSL_PROTO_TLS1) || defined(MBEDTLS_SSL_PROTO_TLS1_1) || \
defined(MBEDTLS_SSL_PROTO_TLS1_2)
/*
* TLS encrypted messages can have up to 256 bytes of padding
*/
if( ssl->minor_ver >= MBEDTLS_SSL_MINOR_VERSION_1 &&
ssl->in_msglen > ssl->transform_in->minlen +
MBEDTLS_SSL_MAX_CONTENT_LEN + 256 )
{
MBEDTLS_SSL_DEBUG_MSG( 1, ( "bad message length" ) );
return( MBEDTLS_ERR_SSL_INVALID_RECORD );
}
#endif
}
/*
* DTLS-related tests done last, because most of them may result in
* silently dropping the record (but not the whole datagram), and we only
* want to consider that after ensuring that the "basic" fields (type,
* version, length) are sane.
* DTLS-related tests.
* Check epoch before checking length constraint because
* the latter varies with the epoch. E.g., if a ChangeCipherSpec
* message gets duplicated before the corresponding Finished message,
* the second ChangeCipherSpec should be discarded because it belongs
* to an old epoch, but not because its length is shorter than
* the minimum record length for packets using the new record transform.
* Note that these two kinds of failures are handled differently,
* as an unexpected record is silently skipped but an invalid
* record leads to the entire datagram being dropped.
*/
#if defined(MBEDTLS_SSL_PROTO_DTLS)
if( ssl->conf->transport == MBEDTLS_SSL_TRANSPORT_DATAGRAM )
{
unsigned int rec_epoch = ( ssl->in_ctr[0] << 8 ) | ssl->in_ctr[1];
/* Drop unexpected ChangeCipherSpec messages */
if( ssl->in_msgtype == MBEDTLS_SSL_MSG_CHANGE_CIPHER_SPEC &&
ssl->state != MBEDTLS_SSL_CLIENT_CHANGE_CIPHER_SPEC &&
ssl->state != MBEDTLS_SSL_SERVER_CHANGE_CIPHER_SPEC )
{
MBEDTLS_SSL_DEBUG_MSG( 1, ( "dropping unexpected ChangeCipherSpec" ) );
return( MBEDTLS_ERR_SSL_UNEXPECTED_RECORD );
}
/* Drop unexpected ApplicationData records,
* except at the beginning of renegotiations */
if( ssl->in_msgtype == MBEDTLS_SSL_MSG_APPLICATION_DATA &&
ssl->state != MBEDTLS_SSL_HANDSHAKE_OVER
#if defined(MBEDTLS_SSL_RENEGOTIATION)
&& ! ( ssl->renego_status == MBEDTLS_SSL_RENEGOTIATION_IN_PROGRESS &&
ssl->state == MBEDTLS_SSL_SERVER_HELLO )
#endif
)
{
MBEDTLS_SSL_DEBUG_MSG( 1, ( "dropping unexpected ApplicationData" ) );
return( MBEDTLS_ERR_SSL_UNEXPECTED_RECORD );
}
/* Check epoch (and sequence number) with DTLS */
if( rec_epoch != ssl->in_epoch )
{
@ -3687,9 +3656,74 @@ static int ssl_parse_record_header( mbedtls_ssl_context *ssl )
return( MBEDTLS_ERR_SSL_UNEXPECTED_RECORD );
}
#endif
/* Drop unexpected ChangeCipherSpec messages */
if( ssl->in_msgtype == MBEDTLS_SSL_MSG_CHANGE_CIPHER_SPEC &&
ssl->state != MBEDTLS_SSL_CLIENT_CHANGE_CIPHER_SPEC &&
ssl->state != MBEDTLS_SSL_SERVER_CHANGE_CIPHER_SPEC )
{
MBEDTLS_SSL_DEBUG_MSG( 1, ( "dropping unexpected ChangeCipherSpec" ) );
return( MBEDTLS_ERR_SSL_UNEXPECTED_RECORD );
}
/* Drop unexpected ApplicationData records,
* except at the beginning of renegotiations */
if( ssl->in_msgtype == MBEDTLS_SSL_MSG_APPLICATION_DATA &&
ssl->state != MBEDTLS_SSL_HANDSHAKE_OVER
#if defined(MBEDTLS_SSL_RENEGOTIATION)
&& ! ( ssl->renego_status == MBEDTLS_SSL_RENEGOTIATION_IN_PROGRESS &&
ssl->state == MBEDTLS_SSL_SERVER_HELLO )
#endif
)
{
MBEDTLS_SSL_DEBUG_MSG( 1, ( "dropping unexpected ApplicationData" ) );
return( MBEDTLS_ERR_SSL_UNEXPECTED_RECORD );
}
}
#endif /* MBEDTLS_SSL_PROTO_DTLS */
/* Check length against bounds of the current transform and version */
if( ssl->transform_in == NULL )
{
if( ssl->in_msglen < 1 ||
ssl->in_msglen > MBEDTLS_SSL_MAX_CONTENT_LEN )
{
MBEDTLS_SSL_DEBUG_MSG( 1, ( "bad message length" ) );
return( MBEDTLS_ERR_SSL_INVALID_RECORD );
}
}
else
{
if( ssl->in_msglen < ssl->transform_in->minlen )
{
MBEDTLS_SSL_DEBUG_MSG( 1, ( "bad message length" ) );
return( MBEDTLS_ERR_SSL_INVALID_RECORD );
}
#if defined(MBEDTLS_SSL_PROTO_SSL3)
if( ssl->minor_ver == MBEDTLS_SSL_MINOR_VERSION_0 &&
ssl->in_msglen > ssl->transform_in->minlen + MBEDTLS_SSL_MAX_CONTENT_LEN )
{
MBEDTLS_SSL_DEBUG_MSG( 1, ( "bad message length" ) );
return( MBEDTLS_ERR_SSL_INVALID_RECORD );
}
#endif
#if defined(MBEDTLS_SSL_PROTO_TLS1) || defined(MBEDTLS_SSL_PROTO_TLS1_1) || \
defined(MBEDTLS_SSL_PROTO_TLS1_2)
/*
* TLS encrypted messages can have up to 256 bytes of padding
*/
if( ssl->minor_ver >= MBEDTLS_SSL_MINOR_VERSION_1 &&
ssl->in_msglen > ssl->transform_in->minlen +
MBEDTLS_SSL_MAX_CONTENT_LEN + 256 )
{
MBEDTLS_SSL_DEBUG_MSG( 1, ( "bad message length" ) );
return( MBEDTLS_ERR_SSL_INVALID_RECORD );
}
#endif
}
return( 0 );
}
@ -3778,7 +3812,10 @@ int mbedtls_ssl_read_record( mbedtls_ssl_context *ssl )
{
do {
if( ( ret = mbedtls_ssl_read_record_layer( ssl ) ) != 0 )
do ret = mbedtls_ssl_read_record_layer( ssl );
while( ret == MBEDTLS_ERR_SSL_CONTINUE_PROCESSING );
if( ret != 0 )
{
MBEDTLS_SSL_DEBUG_RET( 1, ( "mbedtls_ssl_read_record_layer" ), ret );
return( ret );
@ -3786,11 +3823,12 @@ int mbedtls_ssl_read_record( mbedtls_ssl_context *ssl )
ret = mbedtls_ssl_handle_message_type( ssl );
} while( MBEDTLS_ERR_SSL_NON_FATAL == ret );
} while( MBEDTLS_ERR_SSL_NON_FATAL == ret ||
MBEDTLS_ERR_SSL_CONTINUE_PROCESSING == ret );
if( 0 != ret )
{
MBEDTLS_SSL_DEBUG_RET( 1, ( "mbedtls_ssl_read_record_layer" ), ret );
MBEDTLS_SSL_DEBUG_RET( 1, ( "mbedtls_ssl_handle_message_type" ), ret );
return( ret );
}
@ -3828,11 +3866,6 @@ int mbedtls_ssl_read_record_layer( mbedtls_ssl_context *ssl )
* (2) Alert messages:
* Consume whole record content, in_msglen = 0.
*
* NOTE: This needs to be fixed, since like for
* handshake messages it is allowed to have
* multiple alerts witin a single record.
* Internal reference IOTSSL-1321.
*
* (3) Change cipher spec:
* Consume whole record content, in_msglen = 0.
*
@ -3860,12 +3893,12 @@ int mbedtls_ssl_read_record_layer( mbedtls_ssl_context *ssl )
*/
/* Notes:
* (1) in_hslen is *NOT* necessarily the size of the
* (1) in_hslen is not necessarily the size of the
* current handshake content: If DTLS handshake
* fragmentation is used, that's the fragment
* size instead. Using the total handshake message
* size here is FAULTY and should be changed at
* some point. Internal reference IOTSSL-1414.
* size here is faulty and should be changed at
* some point.
* (2) While it doesn't seem to cause problems, one
* has to be very careful not to assume that in_hslen
* is always <= in_msglen in a sensible communication.
@ -3916,12 +3949,6 @@ int mbedtls_ssl_read_record_layer( mbedtls_ssl_context *ssl )
return( 0 );
}
/* Need to fetch a new record */
#if defined(MBEDTLS_SSL_PROTO_DTLS)
read_record_header:
#endif
/* Current record either fully processed or to be discarded. */
if( ( ret = mbedtls_ssl_fetch_input( ssl, mbedtls_ssl_hdr_len( ssl ) ) ) != 0 )
@ -3956,7 +3983,7 @@ read_record_header:
}
/* Get next record */
goto read_record_header;
return( MBEDTLS_ERR_SSL_CONTINUE_PROCESSING );
}
#endif
return( ret );
@ -3975,7 +4002,13 @@ read_record_header:
/* Done reading this record, get ready for the next one */
#if defined(MBEDTLS_SSL_PROTO_DTLS)
if( ssl->conf->transport == MBEDTLS_SSL_TRANSPORT_DATAGRAM )
{
ssl->next_record_offset = ssl->in_msglen + mbedtls_ssl_hdr_len( ssl );
if( ssl->next_record_offset < ssl->in_left )
{
MBEDTLS_SSL_DEBUG_MSG( 3, ( "more than one record within datagram" ) );
}
}
else
#endif
ssl->in_left = 0;
@ -4022,7 +4055,7 @@ read_record_header:
ssl->in_left = 0;
MBEDTLS_SSL_DEBUG_MSG( 1, ( "discarding invalid record (mac)" ) );
goto read_record_header;
return( MBEDTLS_ERR_SSL_CONTINUE_PROCESSING );
}
return( ret );
@ -4043,46 +4076,6 @@ read_record_header:
}
}
/*
* When we sent the last flight of the handshake, we MUST respond to a
* retransmit of the peer's previous flight with a retransmit. (In
* practice, only the Finished message will make it, other messages
* including CCS use the old transform so they're dropped as invalid.)
*
* If the record we received is not a handshake message, however, it
* means the peer received our last flight so we can clean up
* handshake info.
*
* This check needs to be done before prepare_handshake() due to an edge
* case: if the client immediately requests renegotiation, this
* finishes the current handshake first, avoiding the new ClientHello
* being mistaken for an ancient message in the current handshake.
*/
#if defined(MBEDTLS_SSL_PROTO_DTLS)
if( ssl->conf->transport == MBEDTLS_SSL_TRANSPORT_DATAGRAM &&
ssl->handshake != NULL &&
ssl->state == MBEDTLS_SSL_HANDSHAKE_OVER )
{
if( ssl->in_msgtype == MBEDTLS_SSL_MSG_HANDSHAKE &&
ssl->in_msg[0] == MBEDTLS_SSL_HS_FINISHED )
{
MBEDTLS_SSL_DEBUG_MSG( 2, ( "received retransmit of last flight" ) );
if( ( ret = mbedtls_ssl_resend( ssl ) ) != 0 )
{
MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_resend", ret );
return( ret );
}
return( MBEDTLS_ERR_SSL_WANT_READ );
}
else
{
ssl_handshake_wrapup_free_hs_transform( ssl );
}
}
#endif
return( 0 );
}
@ -4127,7 +4120,7 @@ int mbedtls_ssl_handle_message_type( mbedtls_ssl_context *ssl )
if( ssl->in_msg[0] == MBEDTLS_SSL_ALERT_LEVEL_WARNING &&
ssl->in_msg[1] == MBEDTLS_SSL_ALERT_MSG_NO_RENEGOTIATION )
{
MBEDTLS_SSL_DEBUG_MSG( 2, ( "is a SSLv3 no_cert" ) );
MBEDTLS_SSL_DEBUG_MSG( 2, ( "is a SSLv3 no renegotiation alert" ) );
/* Will be handled when trying to parse ServerHello */
return( 0 );
}
@ -4149,6 +4142,15 @@ int mbedtls_ssl_handle_message_type( mbedtls_ssl_context *ssl )
return MBEDTLS_ERR_SSL_NON_FATAL;
}
#if defined(MBEDTLS_SSL_PROTO_DTLS)
if( ssl->conf->transport == MBEDTLS_SSL_TRANSPORT_DATAGRAM &&
ssl->handshake != NULL &&
ssl->state == MBEDTLS_SSL_HANDSHAKE_OVER )
{
ssl_handshake_wrapup_free_hs_transform( ssl );
}
#endif
return( 0 );
}
@ -5026,9 +5028,9 @@ static void ssl_calc_finished_ssl(
mbedtls_md5_free( &md5 );
mbedtls_sha1_free( &sha1 );
mbedtls_zeroize( padbuf, sizeof( padbuf ) );
mbedtls_zeroize( md5sum, sizeof( md5sum ) );
mbedtls_zeroize( sha1sum, sizeof( sha1sum ) );
mbedtls_platform_zeroize( padbuf, sizeof( padbuf ) );
mbedtls_platform_zeroize( md5sum, sizeof( md5sum ) );
mbedtls_platform_zeroize( sha1sum, sizeof( sha1sum ) );
MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= calc finished" ) );
}
@ -5087,7 +5089,7 @@ static void ssl_calc_finished_tls(
mbedtls_md5_free( &md5 );
mbedtls_sha1_free( &sha1 );
mbedtls_zeroize( padbuf, sizeof( padbuf ) );
mbedtls_platform_zeroize( padbuf, sizeof( padbuf ) );
MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= calc finished" ) );
}
@ -5137,7 +5139,7 @@ static void ssl_calc_finished_tls_sha256(
mbedtls_sha256_free( &sha256 );
mbedtls_zeroize( padbuf, sizeof( padbuf ) );
mbedtls_platform_zeroize( padbuf, sizeof( padbuf ) );
MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= calc finished" ) );
}
@ -5186,7 +5188,7 @@ static void ssl_calc_finished_tls_sha384(
mbedtls_sha512_free( &sha512 );
mbedtls_zeroize( padbuf, sizeof( padbuf ) );
mbedtls_platform_zeroize( padbuf, sizeof( padbuf ) );
MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= calc finished" ) );
}
@ -6105,7 +6107,7 @@ int mbedtls_ssl_conf_psk( mbedtls_ssl_config *conf,
if( conf->psk != NULL )
{
mbedtls_zeroize( conf->psk, conf->psk_len );
mbedtls_platform_zeroize( conf->psk, conf->psk_len );
mbedtls_free( conf->psk );
conf->psk = NULL;
@ -6148,7 +6150,8 @@ int mbedtls_ssl_set_hs_psk( mbedtls_ssl_context *ssl,
if( ssl->handshake->psk != NULL )
{
mbedtls_zeroize( ssl->handshake->psk, ssl->handshake->psk_len );
mbedtls_platform_zeroize( ssl->handshake->psk,
ssl->handshake->psk_len );
mbedtls_free( ssl->handshake->psk );
ssl->handshake->psk_len = 0;
}
@ -6278,7 +6281,7 @@ int mbedtls_ssl_set_hostname( mbedtls_ssl_context *ssl, const char *hostname )
if( ssl->hostname != NULL )
{
mbedtls_zeroize( ssl->hostname, strlen( ssl->hostname ) );
mbedtls_platform_zeroize( ssl->hostname, strlen( ssl->hostname ) );
mbedtls_free( ssl->hostname );
}
@ -6485,6 +6488,61 @@ size_t mbedtls_ssl_get_bytes_avail( const mbedtls_ssl_context *ssl )
return( ssl->in_offt == NULL ? 0 : ssl->in_msglen );
}
int mbedtls_ssl_check_pending( const mbedtls_ssl_context *ssl )
{
/*
* Case A: We're currently holding back
* a message for further processing.
*/
if( ssl->keep_current_message == 1 )
{
MBEDTLS_SSL_DEBUG_MSG( 3, ( "ssl_check_pending: record held back for processing" ) );
return( 1 );
}
/*
* Case B: Further records are pending in the current datagram.
*/
#if defined(MBEDTLS_SSL_PROTO_DTLS)
if( ssl->conf->transport == MBEDTLS_SSL_TRANSPORT_DATAGRAM &&
ssl->in_left > ssl->next_record_offset )
{
MBEDTLS_SSL_DEBUG_MSG( 3, ( "ssl_check_pending: more records within current datagram" ) );
return( 1 );
}
#endif /* MBEDTLS_SSL_PROTO_DTLS */
/*
* Case C: A handshake message is being processed.
*/
if( ssl->in_hslen > 0 && ssl->in_hslen < ssl->in_msglen )
{
MBEDTLS_SSL_DEBUG_MSG( 3, ( "ssl_check_pending: more handshake messages within current record" ) );
return( 1 );
}
/*
* Case D: An application data message is being processed
*/
if( ssl->in_offt != NULL )
{
MBEDTLS_SSL_DEBUG_MSG( 3, ( "ssl_check_pending: application data record is being processed" ) );
return( 1 );
}
/*
* In all other cases, the rest of the message can be dropped.
* As in ssl_read_record_layer, this needs to be adapted if
* we implement support for multiple alerts in single records.
*/
MBEDTLS_SSL_DEBUG_MSG( 3, ( "ssl_check_pending: nothing pending" ) );
return( 0 );
}
uint32_t mbedtls_ssl_get_verify_result( const mbedtls_ssl_context *ssl )
{
if( ssl->session != NULL )
@ -6892,42 +6950,8 @@ int mbedtls_ssl_read( mbedtls_ssl_context *ssl, unsigned char *buf, size_t len )
}
}
/*
* TODO
*
* The logic should be streamlined here:
*
* Instead of
*
* - Manually checking whether ssl->in_offt is NULL
* - Fetching a new record if yes
* - Setting ssl->in_offt if one finds an application record
* - Resetting keep_current_message after handling the application data
*
* one should
*
* - Adapt read_record to set ssl->in_offt automatically
* when a new application data record is processed.
* - Always call mbedtls_ssl_read_record here.
*
* This way, the logic of ssl_read would be much clearer:
*
* (1) Always call record layer and see what kind of record is on
* and have it ready for consumption (in particular, in_offt
* properly set for application data records).
* (2) If it's application data (either freshly fetched
* or something already being partially processed),
* serve the read request from it.
* (3) If it's something different from application data,
* handle it accordingly, e.g. potentially start a
* renegotiation.
*
* This will also remove the need to manually reset
* ssl->keep_current_message = 0 below.
*
*/
if( ssl->in_offt == NULL )
/* Loop as long as no application data record is available */
while( ssl->in_offt == NULL )
{
/* Start timer if not already running */
if( ssl->f_get_timer != NULL &&
@ -6981,7 +7005,9 @@ int mbedtls_ssl_read( mbedtls_ssl_context *ssl, unsigned char *buf, size_t len )
/* With DTLS, drop the packet (probably from last handshake) */
#if defined(MBEDTLS_SSL_PROTO_DTLS)
if( ssl->conf->transport == MBEDTLS_SSL_TRANSPORT_DATAGRAM )
return( MBEDTLS_ERR_SSL_WANT_READ );
{
continue;
}
#endif
return( MBEDTLS_ERR_SSL_UNEXPECTED_MESSAGE );
}
@ -6996,7 +7022,9 @@ int mbedtls_ssl_read( mbedtls_ssl_context *ssl, unsigned char *buf, size_t len )
/* With DTLS, drop the packet (probably from last handshake) */
#if defined(MBEDTLS_SSL_PROTO_DTLS)
if( ssl->conf->transport == MBEDTLS_SSL_TRANSPORT_DATAGRAM )
return( MBEDTLS_ERR_SSL_WANT_READ );
{
continue;
}
#endif
return( MBEDTLS_ERR_SSL_UNEXPECTED_MESSAGE );
}
@ -7069,7 +7097,25 @@ int mbedtls_ssl_read( mbedtls_ssl_context *ssl, unsigned char *buf, size_t len )
}
}
return( MBEDTLS_ERR_SSL_WANT_READ );
/* At this point, we don't know whether the renegotiation has been
* completed or not. The cases to consider are the following:
* 1) The renegotiation is complete. In this case, no new record
* has been read yet.
* 2) The renegotiation is incomplete because the client received
* an application data record while awaiting the ServerHello.
* 3) The renegotiation is incomplete because the client received
* a non-handshake, non-application data message while awaiting
* the ServerHello.
* In each of these case, looping will be the proper action:
* - For 1), the next iteration will read a new record and check
* if it's application data.
* - For 2), the loop condition isn't satisfied as application data
* is present, hence continue is the same as break
* - For 3), the loop condition is satisfied and read_record
* will re-deliver the message that was held back by the client
* when expecting the ServerHello.
*/
continue;
}
#if defined(MBEDTLS_SSL_RENEGOTIATION)
else if( ssl->renego_status == MBEDTLS_SSL_RENEGOTIATION_PENDING )
@ -7324,7 +7370,7 @@ void mbedtls_ssl_transform_free( mbedtls_ssl_transform *transform )
mbedtls_md_free( &transform->md_ctx_enc );
mbedtls_md_free( &transform->md_ctx_dec );
mbedtls_zeroize( transform, sizeof( mbedtls_ssl_transform ) );
mbedtls_platform_zeroize( transform, sizeof( mbedtls_ssl_transform ) );
}
#if defined(MBEDTLS_X509_CRT_PARSE_C)
@ -7384,7 +7430,7 @@ void mbedtls_ssl_handshake_free( mbedtls_ssl_handshake_params *handshake )
#if defined(MBEDTLS_KEY_EXCHANGE__SOME__PSK_ENABLED)
if( handshake->psk != NULL )
{
mbedtls_zeroize( handshake->psk, handshake->psk_len );
mbedtls_platform_zeroize( handshake->psk, handshake->psk_len );
mbedtls_free( handshake->psk );
}
#endif
@ -7414,7 +7460,8 @@ void mbedtls_ssl_handshake_free( mbedtls_ssl_handshake_params *handshake )
ssl_flight_free( handshake->flight );
#endif
mbedtls_zeroize( handshake, sizeof( mbedtls_ssl_handshake_params ) );
mbedtls_platform_zeroize( handshake,
sizeof( mbedtls_ssl_handshake_params ) );
}
void mbedtls_ssl_session_free( mbedtls_ssl_session *session )
@ -7434,7 +7481,7 @@ void mbedtls_ssl_session_free( mbedtls_ssl_session *session )
mbedtls_free( session->ticket );
#endif
mbedtls_zeroize( session, sizeof( mbedtls_ssl_session ) );
mbedtls_platform_zeroize( session, sizeof( mbedtls_ssl_session ) );
}
/*
@ -7449,20 +7496,20 @@ void mbedtls_ssl_free( mbedtls_ssl_context *ssl )
if( ssl->out_buf != NULL )
{
mbedtls_zeroize( ssl->out_buf, MBEDTLS_SSL_BUFFER_LEN );
mbedtls_platform_zeroize( ssl->out_buf, MBEDTLS_SSL_BUFFER_LEN );
mbedtls_free( ssl->out_buf );
}
if( ssl->in_buf != NULL )
{
mbedtls_zeroize( ssl->in_buf, MBEDTLS_SSL_BUFFER_LEN );
mbedtls_platform_zeroize( ssl->in_buf, MBEDTLS_SSL_BUFFER_LEN );
mbedtls_free( ssl->in_buf );
}
#if defined(MBEDTLS_ZLIB_SUPPORT)
if( ssl->compress_buf != NULL )
{
mbedtls_zeroize( ssl->compress_buf, MBEDTLS_SSL_BUFFER_LEN );
mbedtls_platform_zeroize( ssl->compress_buf, MBEDTLS_SSL_BUFFER_LEN );
mbedtls_free( ssl->compress_buf );
}
#endif
@ -7493,7 +7540,7 @@ void mbedtls_ssl_free( mbedtls_ssl_context *ssl )
#if defined(MBEDTLS_X509_CRT_PARSE_C)
if( ssl->hostname != NULL )
{
mbedtls_zeroize( ssl->hostname, strlen( ssl->hostname ) );
mbedtls_platform_zeroize( ssl->hostname, strlen( ssl->hostname ) );
mbedtls_free( ssl->hostname );
}
#endif
@ -7513,7 +7560,7 @@ void mbedtls_ssl_free( mbedtls_ssl_context *ssl )
MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= free" ) );
/* Actually clear after last debug message */
mbedtls_zeroize( ssl, sizeof( mbedtls_ssl_context ) );
mbedtls_platform_zeroize( ssl, sizeof( mbedtls_ssl_context ) );
}
/*
@ -7685,8 +7732,14 @@ int mbedtls_ssl_config_defaults( mbedtls_ssl_config *conf,
* Default
*/
default:
conf->min_major_ver = MBEDTLS_SSL_MAJOR_VERSION_3;
conf->min_minor_ver = MBEDTLS_SSL_MINOR_VERSION_1; /* TLS 1.0 */
conf->min_major_ver = ( MBEDTLS_SSL_MIN_MAJOR_VERSION >
MBEDTLS_SSL_MIN_VALID_MAJOR_VERSION ) ?
MBEDTLS_SSL_MIN_MAJOR_VERSION :
MBEDTLS_SSL_MIN_VALID_MAJOR_VERSION;
conf->min_minor_ver = ( MBEDTLS_SSL_MIN_MINOR_VERSION >
MBEDTLS_SSL_MIN_VALID_MINOR_VERSION ) ?
MBEDTLS_SSL_MIN_MINOR_VERSION :
MBEDTLS_SSL_MIN_VALID_MINOR_VERSION;
conf->max_major_ver = MBEDTLS_SSL_MAX_MAJOR_VERSION;
conf->max_minor_ver = MBEDTLS_SSL_MAX_MINOR_VERSION;
@ -7734,11 +7787,17 @@ void mbedtls_ssl_config_free( mbedtls_ssl_config *conf )
#if defined(MBEDTLS_KEY_EXCHANGE__SOME__PSK_ENABLED)
if( conf->psk != NULL )
{
mbedtls_zeroize( conf->psk, conf->psk_len );
mbedtls_zeroize( conf->psk_identity, conf->psk_identity_len );
mbedtls_platform_zeroize( conf->psk, conf->psk_len );
mbedtls_free( conf->psk );
mbedtls_free( conf->psk_identity );
conf->psk = NULL;
conf->psk_len = 0;
}
if( conf->psk_identity != NULL )
{
mbedtls_platform_zeroize( conf->psk_identity, conf->psk_identity_len );
mbedtls_free( conf->psk_identity );
conf->psk_identity = NULL;
conf->psk_identity_len = 0;
}
#endif
@ -7747,7 +7806,7 @@ void mbedtls_ssl_config_free( mbedtls_ssl_config *conf )
ssl_key_cert_free( conf->key_cert );
#endif
mbedtls_zeroize( conf, sizeof( mbedtls_ssl_config ) );
mbedtls_platform_zeroize( conf, sizeof( mbedtls_ssl_config ) );
}
#if defined(MBEDTLS_PK_C) && \

12
library/threading.c
View file

@ -111,8 +111,12 @@ void mbedtls_threading_set_alt( void (*mutex_init)( mbedtls_threading_mutex_t *
mbedtls_mutex_lock = mutex_lock;
mbedtls_mutex_unlock = mutex_unlock;
#if defined(MBEDTLS_FS_IO)
mbedtls_mutex_init( &mbedtls_threading_readdir_mutex );
#endif
#if defined(MBEDTLS_HAVE_TIME_DATE)
mbedtls_mutex_init( &mbedtls_threading_gmtime_mutex );
#endif
}
/*
@ -120,8 +124,12 @@ void mbedtls_threading_set_alt( void (*mutex_init)( mbedtls_threading_mutex_t *
*/
void mbedtls_threading_free_alt( void )
{
#if defined(MBEDTLS_FS_IO)
mbedtls_mutex_free( &mbedtls_threading_readdir_mutex );
#endif
#if defined(MBEDTLS_HAVE_TIME_DATE)
mbedtls_mutex_free( &mbedtls_threading_gmtime_mutex );
#endif
}
#endif /* MBEDTLS_THREADING_ALT */
@ -131,7 +139,11 @@ void mbedtls_threading_free_alt( void )
#ifndef MUTEX_INIT
#define MUTEX_INIT
#endif
#if defined(MBEDTLS_FS_IO)
mbedtls_threading_mutex_t mbedtls_threading_readdir_mutex MUTEX_INIT;
#endif
#if defined(MBEDTLS_HAVE_TIME_DATE)
mbedtls_threading_mutex_t mbedtls_threading_gmtime_mutex MUTEX_INIT;
#endif
#endif /* MBEDTLS_THREADING_C */

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