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48 commits

Author SHA1 Message Date
Bence Szépkúti 1e14827beb Update copyright notices to use Linux Foundation guidance
As a result, the copyright of contributors other than Arm is now
acknowledged, and the years of publishing are no longer tracked in the
source files.

Also remove the now-redundant lines declaring that the files are part of
MbedTLS.

This commit was generated using the following script:

# ========================
#!/bin/sh

# Find files
find '(' -path './.git' -o -path './3rdparty' ')' -prune -o -type f -print | xargs sed -bi '

# Replace copyright attribution line
s/Copyright.*Arm.*/Copyright The Mbed TLS Contributors/I

# Remove redundant declaration and the preceding line
$!N
/This file is part of Mbed TLS/Id
P
D
'
# ========================

Signed-off-by: Bence Szépkúti <bence.szepkuti@arm.com>
2020-08-19 10:35:41 +02:00
Bence Szépkúti c7da1fe381 Add Apache-2.0 headers to all scripts
This commit was generated using the following script:

# ========================
#!/bin/sh

# Find scripts
find -path './.git' -prune -o '(' -name '*.gdb' -o -name '*.pl' -o -name '*.py' -o -name '*.sh' ')' -print | xargs sed -i '

# Remove Mbed TLS declaration if it occurs before the copyright line
1,/Copyright.*Arm/I {
  /This file is part of/,$ {
    /Copyright.*Arm/I! d
  }
}

# Convert non-standard header in scripts/abi_check.py to the format used in the other scripts
/"""/,/"""/ {

  # Cut copyright declaration
  /Copyright.*Arm/I {
    h
    N
    d
  }

  # Paste copyright declaration
  /"""/ {
    x
    /./ {
      s/^/# /    # Add #
      x          # Replace orignal buffer with Copyright declaration
      p          # Print original buffer, insert newline
      i\

      s/.*//     # Clear original buffer
    }
    x
  }
}

/Copyright.*Arm/I {

  # Print copyright declaration
  p

  # Read the two lines immediately following the copyright declaration
  N
  N

  # Insert Apache header if it is missing
  /SPDX/! {
    i\
# 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.

    # Insert Mbed TLS declaration if it is missing
    /This file is part of/! i\
#\
# This file is part of Mbed TLS (https://tls.mbed.org)
  }

  # Clear copyright declaration from buffer
  D
}
'
# ========================

Signed-off-by: Bence Szépkúti <bence.szepkuti@arm.com>
2020-06-15 12:05:47 +02:00
Bence Szépkúti 700ee44545 Add missing copyright dates to scripts and sources
To find any files with a missing copyright declaration, use the following script:

# ========================
#!/bin/sh

# Find files with copyright declarations, and list their file extensions
exts=$(grep -Ril --exclude-dir .git --exclude-dir 3rdparty\
                 --exclude-dir programs/fuzz 'Copyright.*Arm' | sed '
  s/.*\///
  s/.*\./*./
  s/.*/-name "&"/
' | sort -u | sed -n '
  :l
    N
    $!bl
  s/\n/ -o /gp
')

# Find files with file extensions that ususally include copyright extensions,
# but don't include a copyright declaration themselves.
eval "find\
  '(' -path './.git' -o -path './3rdparty' -o -path './programs/fuzz' ')' -prune\
  -o ! -path './tests/data_files/format_pkcs12.fmt'\
     ! -path './programs/psa/psa_constant_names_generated.c'\
     '(' $exts ')' -print" | xargs grep -Li 'Copyright.*Arm'
# ========================

Signed-off-by: Bence Szépkúti <bence.szepkuti@arm.com>
2020-06-15 12:05:46 +02:00
Gilles Peskine 8b022359e8 Pylint: minor code simplifications
Simplify the code in minor ways. Each of this changes fixes a warning
from Pylint 2.4 that doesn't appear with Pylint 1.7.

Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
2020-04-11 20:23:22 +02:00
Gilles Peskine f65ed6f254 Change key types to a 16-bit encoding
All key types now have an encoding on 32 bits where the bottom 16 bits
are zero. Change to using 16 bits only.

Keep 32 bits for key types in storage, but move the significant
half-word from the top to the bottom.

Likewise, change EC curve and DH group families from 32 bits out of
which the top 8 and bottom 16 bits are zero, to 8 bits only.

Reorder psa_core_key_attributes_t to avoid padding.
2020-01-31 10:24:21 +01:00
Gilles Peskine 228abc5773 Define EC curve family constants
Define constants for ECC curve families and DH group families. These
constants have 0x0000 in the lower 16 bits of the key type.

Support these constants in the implementation and in the PSA metadata
tests.

Switch the slot management and secure element driver HAL tests to the
new curve encodings. This requires SE driver code to become slightly
more clever when figuring out the bit-size of an imported EC key since
it now needs to take the data size into account.

Switch some documentation to the new encodings.

Remove the macro PSA_ECC_CURVE_BITS which can no longer be implemented.
2020-01-31 10:15:32 +01:00
Gilles Peskine f8210f2bd5 Test the block size for symmetric keys
Also insist on their category.

Fix a missing implementation of PSA_BLOCK_CIPHER_BLOCK_SIZE for
ChaCha20.
2019-12-12 09:00:27 +01:00
Gilles Peskine 325584889d Add option to show what values are tested
This is useful to inspect what the script does manually, in particular
to check that expected values do get tested. --keep-c provides the
same information but in a way that's harder to access.
2019-12-11 11:03:07 +01:00
Gilles Peskine 49af2d3a4f Support non-ASCII characters in headers
Filter out non-ASCII characters in automatically processed headers.

Do this in a way that minimizes the code change: keep manipulating
strings, but strip off non-ASCII characters when reading lines, which
should only remove characters in comments that we don't parse anyway.
2019-12-11 11:03:07 +01:00
Gilles Peskine 7a894f2142 Move backward compatibility aliases to their own header
Move backward compatibility aliases to a separate header. Reserve
crypto_extra.h for implementation-specific extensions that we intend
to keep supporting.

This is better documentation for users. New users should simply ignore
backward compatibility aliases, and old users can look at
crypto_compat.h to see what is deprecated without bothering about new
features appearing in crypto_extra.h.

This facilitates maintenance because scripts such as
generate_psa_constants that want to ignore backward compability
aliases can simply exclude crypto_compat.h from their parsing.
2019-11-26 18:20:58 +01:00
Gilles Peskine 8fa1348276 Enumerate metadata test functions explicitly
When gathering test cases from test_suite_psa_crypto_metadata, look up
the test function explicitly. This way test_psa_constant_names will
error out if we add a new test function that needs coverage here.

This change highlights an omission in the previous version:
asymmetric_signature_wildcard was silently ignored as a source of
algorithm expressions to test. Fix that.
2019-11-25 17:10:12 +01:00
Gilles Peskine 7961668738 Support key agreement
Key agreement algorithms were excluded back when they were constructed
with a macro conveying the key agreement itself taking the KDF as an
argument, because that was hard to support. Now the encoding has
changed and key agreement algorithms are constructed with
PSA_ALG_KEY_AGREEMENT taking two arguments, one that identifies the
raw key agreement and one that identifies the KDF. This is easy to
process, so add support.
2019-11-25 15:44:24 +01:00
Gilles Peskine 2bcfc714d2 Error out if a test case uses an unknown macro name
Insist that test cases must only use macro names that are declared in
a header. This may catch errors such as not parsing the intended
files.

Make this check easily overridden in a derived class.
2019-11-25 15:44:24 +01:00
Gilles Peskine 98a710c5b2 Fix the collection of ECC curves and DH groups
PSA_ECC_CURVE_xxx and PSA_DH_GROUP_xxx were not collected from
headers, only from test suites.
2019-11-25 15:44:23 +01:00
Gilles Peskine 8c8694c14d add_test_case_line: data-driven dispatch
No behavior change.
2019-11-25 15:44:23 +01:00
Gilles Peskine 84a45817a4 Allow gather_inputs to work with a derived Inputs class
No behavior change.
2019-11-25 15:44:23 +01:00
Gilles Peskine a5000f1dc6 Make a class for error data
No behavior change.
2019-11-25 15:44:23 +01:00
Gilles Peskine 2460933a6f Move test running and reporting functions into their own class
This makes the structure of the code more apparent.

No behavior change.
2019-11-25 15:44:23 +01:00
Gilles Peskine b86b6d32f9 Path options that affect run_c as separate arguments
No behavior change.
2019-11-25 15:44:23 +01:00
Gilles Peskine c231711dbc Move value collection into its own function
No behavior change.
2019-11-25 15:44:21 +01:00
Gilles Peskine ffe2d6e71b Move the type_word->name_set mapping into its own method
No behavior change.
2019-11-25 15:44:04 +01:00
Gilles Peskine 4408dfd0fc Minor docstring improvements
No behavior change.
2019-11-22 17:44:25 +01:00
Gilles Peskine 69f93b5040 Move the names of input files to global variables
No behavior change.
2019-11-21 16:49:50 +01:00
Gilles Peskine 8f5a5018e8 Describe options in alphabetical order
No behavior change.
2019-11-21 16:49:10 +01:00
Gilles Peskine 5a6dc895f2 Simplify expression normalization
No need to split lines, or remove whitespace after removing
whitespace. No behavior change.
2019-11-21 16:48:47 +01:00
Gilles Peskine 5a994c15f4 More readable code around expression generation
FOO(BAR) is an expression, not a name.
Pack expression generation into a method.
No behavior change.
2019-11-21 16:46:51 +01:00
Gilles Peskine 1983512803 Add backward compatibility alias for PSA_ERROR_CORRUPTION_DETECTED
This was renamed from PSA_ERROR_TAMPERING_DETECTED. Add a backward
compatibility alias in case somebody was already using it.
2019-09-06 17:48:56 +02:00
Gilles Peskine 5c196fb599 Readability improvements
No indented semantic change.
2019-09-06 17:35:51 +02:00
Unknown e2e19959d7 Rename AEAD macro to not use double underscores
This pattern (identifiers containing a double underscore anywhere in them)
is reserved.
2019-08-21 03:33:04 -04:00
Gilles Peskine a3b93ff893 Make docstring style consistent
Use PEP 257 indented docstring style, mostly: always with """, with the
terminating """ on a separate line if the docstring is more than one
line, and with all lines indented to the opening """.

This commit does not change the text to keep the first paragraph single-line.
2019-06-03 11:23:56 +02:00
Gilles Peskine 54f544581a Pacify Pylint
Pass Pylint by cleaning up the code where possible and silencing
Pylint where I know better.

No behavior change.
2019-05-29 09:58:59 +02:00
Gilles Peskine 42a0a0aeea Obey Python naming and method structure conventions
* Rename internal methods and fields to start with an underscore.
* Rename global constants to uppercase.
* Change methods that don't use self to be class methods or static
  methods as appropriate.

No behavior change in this commit.
2019-05-29 09:58:59 +02:00
Gilles Peskine dcaefae849 Parametrize Diffie-Hellman keys by a group identifier
Parametrize finite-field Diffie-Hellman key types with a DH group
identifier, in the same way elliptic curve keys are parametrized with
an EC curve identifier.

Define the DH groups from the TLS registry (these are the groups from
RFC 7919).

Replicate the macro definitions and the metadata tests from elliptic
curve identifiers to DH group identifiers.

Define PSA_DH_GROUP_CUSTOM as an implementation-specific extension for
which domain parameters are used to specify the group.
2019-05-16 19:51:10 +02:00
Gilles Peskine 882e57ecba psa_constant_names: support key agreement algorithms 2019-04-18 09:42:21 +02:00
Jaeden Amero 5e6d24c5e1 psa: Add backwards compatible error codes
Add deprecated error codes to help transition between the previous
version of the PSA Crypto specification and the current one.
2019-02-21 11:49:15 +00:00
Gilles Peskine c4cd2adae8 test_psa_constant_names: fix uses of C integer types
Some of the types may in principle be wider than `unsigned`, so use
`unsigned long` in printf.

Add support for signed types: a status is a signed value, and
preferentially printed in decimal.
2019-02-13 18:46:51 +01:00
Darryl Green b8fe06820b Document that ECDH and FFDH are excluded only temporarily 2019-02-06 13:44:30 +00:00
Darryl Green 61b7f61d5e Change unknown hash algorithm value
0x010000ff corresponds to PSA_ALG_ANY_HASH, so this collides and
isn't an unknown algorithm.
2019-02-05 09:21:28 +00:00
Darryl Green ec07950e53 Exclude ECDH and FFDH key agreement algorithms for now 2019-01-29 16:08:46 +00:00
Gilles Peskine 95ab71a19a test_psa_constant_names: make tmp files easier to recognize 2019-01-29 16:08:46 +00:00
Gilles Peskine 17542086ab Recognize kdf_alg as KDF algorithm parameter name 2019-01-29 16:08:46 +00:00
Gilles Peskine 6d194bd92b Read constant names from crypto_extra.h as well as crypto_values.h
test_psa_constant_names.py was originally written before the split of
crypto.h into crypto_values.h and more, so it now needs to read
crypto_values.h as well.

In both generate_psa_constants.py and test_psa_constant_names.py, read
crypto_extra.h as well. We don't currently define any value there, but
it's plausible that we will one day.
2019-01-29 16:08:46 +00:00
Gilles Peskine c68ce9637a Exclude full-length-algorithm macros from testing
Calls to PSA_ALG_AEAD_WITH_DEFAULT_TAG_LENGTH and
PSA_ALG_FULL_LENGTH_MAC are not in canonical form, so exclude them
from the list of constructor macros to test.
2019-01-29 16:08:46 +00:00
Gilles Peskine 434899fccd Test truncated MAC and AEAD algorithms
For MAC and AEAD algorithms, test the algorithm truncated to certain
lengths (1 and 63 bytes).
2019-01-29 16:08:46 +00:00
Gilles Peskine f96ed6615c Fix bug in distribute_arguments for multi-argument macros 2019-01-29 16:08:46 +00:00
Gilles Peskine cf9c18e696 Add option to keep the temporary C files
Useful for debugging and for reviewing what test cases are generated.
2019-01-29 16:08:45 +00:00
Gilles Peskine a0a315c815 Add location information to input processing exceptions
If parsing fails, report the input file name and line number.

If distribute_arguments fails, report for what name.
2019-01-29 16:08:45 +00:00
Gilles Peskine 2482702d15 Test program for psa_constant_names
Test psa_constant_names on many inputs. For each input, find out the
numerical value by compiling and running a C program, pass the
numerical value to psa_constant_names and compare the output with the
original input.

Gather inputs by parsing psa/crypto.h and
test_suite_psa_crypto_metadata.data. For macros that take an argument,
list some possible arguments using the parsed data.
2019-01-29 16:07:45 +00:00