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mbedtls/library
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Janos Follath 171a7efd02 Add mbedtls_ecp_read_key 
The private keys used in ECDH differ in the case of Weierstrass and
Montgomery curves. They have different constraints, the former is based
on big endian, the latter little endian byte order. The fundamental
approach is different too:
- Weierstrass keys have to be in the right interval, otherwise they are
  rejected.
- Any byte array of the right size is a valid Montgomery key and it
  needs to be masked before interpreting it as a number.

Historically it was sufficient to use mbedtls_mpi_read_binary() to read
private keys, but as a preparation to improve support for Montgomery
curves we add mbedtls_ecp_read_key() to enable uniform treatment of EC
keys.

For the masking the `mbedtls_mpi_set_bit()` function is used. This is
suboptimal but seems to provide the best trade-off at this time.
Alternatives considered:
- Making a copy of the input buffer (less efficient)
- removing the `const` constraint from the input buffer (breaks the api
and makes it less user friendly)
- applying the mask directly to the limbs (violates the api between the
modules and creates and unwanted dependency)
2019-02-22 15:39:03 +00:00
..
.gitignore Split libs with make + general make cleanups 2015-06-25 10:59:56 +02:00
aes.c Merge development commit 8e76332 into development-psa 2019-01-31 08:20:20 -05:00
aesni.c Warn if using a memory sanitizer on AESNI 2018-04-05 15:37:38 +02:00
arc4.c Rename mbedtls_zeroize to mbedtls_platform_zeroize 2018-04-17 10:00:21 -05:00
aria.c Merge development commit 8e76332 into development-psa 2019-01-31 08:20:20 -05:00
asn1parse.c Rename mbedtls_zeroize to mbedtls_platform_zeroize 2018-04-17 10:00:21 -05:00
asn1write.c Merge development commit 8e76332 into development-psa 2019-01-31 08:20:20 -05:00
base64.c Add comment to integer overflow fix in base64.c 2017-02-15 23:31:07 +02:00
bignum.c Add mbedtls_ecp_read_key 2019-02-22 15:39:03 +00:00
blowfish.c Merge development commit 8e76332 into development-psa 2019-01-31 08:20:20 -05:00
camellia.c Merge development commit 8e76332 into development-psa 2019-01-31 08:20:20 -05:00
ccm.c Merge development commit 8e76332 into development-psa 2019-01-31 08:20:20 -05:00
certs.c Update hardcoded certificates in library/certs.c 2018-11-02 10:52:38 +00:00
chacha20.c Merge development commit 8e76332 into development-psa 2019-01-31 08:20:20 -05:00
chachapoly.c Merge development commit 8e76332 into development-psa 2019-01-31 08:20:20 -05:00
cipher.c cipher: remove unnecessary precondition 2019-02-05 05:11:03 -05:00
cipher_wrap.c Fix style in NUM_CIPHERS definition in cipher_wrap.c 2018-11-22 14:03:39 +00:00
cmac.c Merge remote-tracking branch 'public/pr/1390' into development 2018-06-27 10:51:47 +01:00
CMakeLists.txt Merge development commit f352f7 into development-psa 2019-02-01 07:03:03 -05:00
ctr_drbg.c Merge development commit 8e76332 into development-psa 2019-01-31 08:20:20 -05:00
debug.c Merge development commit 8e76332 into development-psa 2019-01-31 08:20:20 -05:00
des.c Rename mbedtls_zeroize to mbedtls_platform_zeroize 2018-04-17 10:00:21 -05:00
dhm.c Merge development commit 8e76332 into development-psa 2019-01-31 08:20:20 -05:00
ecdh.c Fix mbedtls_ecdh_get_params with new ECDH context 2019-02-22 13:04:23 +01:00
ecdsa.c Merge development commit 8e76332 into development-psa 2019-01-31 08:20:20 -05:00
ecjpake.c Merge development commit 8e76332 into development-psa 2019-01-31 08:20:20 -05:00
ecp.c Add mbedtls_ecp_read_key 2019-02-22 15:39:03 +00:00
ecp_curves.c Merge development commit 8e76332 into development-psa 2019-01-31 08:20:20 -05:00
entropy.c Rename mbedtls_zeroize to mbedtls_platform_zeroize 2018-04-17 10:00:21 -05:00
entropy_poll.c Merge development commit 8e76332 into development-psa 2019-01-31 08:20:20 -05:00
error.c Merge development commit 8e76332 into development-psa 2019-01-31 08:20:20 -05:00
gcm.c Merge development commit 8e76332 into development-psa 2019-01-31 08:20:20 -05:00
havege.c Rename mbedtls_zeroize to mbedtls_platform_zeroize 2018-04-17 10:00:21 -05:00
hkdf.c Fix issue if salt = NULL and salt_len !=0 in mbedtls_hkdf_extract() 2018-07-23 10:34:47 -07:00
hmac_drbg.c Merge development commit 8e76332 into development-psa 2019-01-31 08:20:20 -05:00
Makefile Merge development commit f352f7 into development-psa 2019-02-01 07:03:03 -05:00
md.c Rename mbedtls_zeroize to mbedtls_platform_zeroize 2018-04-17 10:00:21 -05:00
md2.c Rename mbedtls_zeroize to mbedtls_platform_zeroize 2018-04-17 10:00:21 -05:00
md4.c Rename mbedtls_zeroize to mbedtls_platform_zeroize 2018-04-17 10:00:21 -05:00
md5.c Fix Lucky 13 cache attack on MD/SHA padding 2018-07-05 10:47:00 +02:00
md_wrap.c New MD API: rename functions from _ext to _ret 2018-01-22 11:54:42 +01:00
memory_buffer_alloc.c Fix braces in mbedtls_memory_buffer_alloc_status() 2018-06-12 16:56:04 +01:00
net_sockets.c Merge remote-tracking branch 'public/pr/1198' into development 2018-07-24 17:20:17 +01:00
nist_kw.c Merge development commit 8e76332 into development-psa 2019-01-31 08:20:20 -05:00
oid.c pkcs5v2: add support for additional hmacSHA algorithms 2018-02-08 17:18:15 +08:00
padlock.c Change main license to Apache 2.0 2015-09-04 14:21:07 +02:00
pem.c Merge development commit 8e76332 into development-psa 2019-01-31 08:20:20 -05:00
pk.c pk: restructure precondition check 2019-02-05 05:09:05 -05:00
pk_wrap.c Fix outdated comment in ecdsa_verify_wrap() 2019-01-29 08:26:15 +00:00
pkcs5.c Merge development commit 8e76332 into development-psa 2019-01-31 08:20:20 -05:00
pkcs11.c Change main license to Apache 2.0 2015-09-04 14:21:07 +02:00
pkcs12.c Merge development commit 8e76332 into development-psa 2019-01-31 08:20:20 -05:00
pkparse.c Merge development commit 8e76332 into development-psa 2019-01-31 08:20:20 -05:00
pkwrite.c Merge development-psa commit 80b5662 into development-psa-merged branch 2019-02-05 06:02:51 -05:00
platform.c Merge remote-tracking branch 'origin/pr/1551' into development 2019-01-30 13:24:55 +00:00
platform_util.c Merge development commit 8e76332 into development-psa 2019-01-31 08:20:20 -05:00
poly1305.c Merge development commit 8e76332 into development-psa 2019-01-31 08:20:20 -05:00
ripemd160.c Rename mbedtls_zeroize to mbedtls_platform_zeroize 2018-04-17 10:00:21 -05:00
rsa.c rsa: Enable use of zero-length null output 2019-02-11 03:39:51 -05:00
rsa_internal.c Bignum: Deprecate mbedtls_mpi_is_prime() 2018-10-09 16:36:53 +01:00
sha1.c Merge development commit 8e76332 into development-psa 2019-01-31 08:20:20 -05:00
sha256.c Merge development commit 8e76332 into development-psa 2019-01-31 08:20:20 -05:00
sha512.c Merge development commit 8e76332 into development-psa 2019-01-31 08:20:20 -05:00
ssl_cache.c Address PR review comments 2017-10-29 17:53:52 +02:00
ssl_ciphersuites.c Merge remote-tracking branch 'upstream-public/pr/1378' into development 2018-08-10 10:59:53 +01:00
ssl_cli.c Merge development commit 8e76332 into development-psa 2019-01-31 08:20:20 -05:00
ssl_cookie.c Rename mbedtls_zeroize to mbedtls_platform_zeroize 2018-04-17 10:00:21 -05:00
ssl_srv.c Merge development commit f352f7 into development-psa 2019-02-01 07:03:03 -05:00
ssl_ticket.c Merge development commit 8e76332 into development-psa 2019-01-31 08:20:20 -05:00
ssl_tls.c Merge development-psa commit 80b5662 into development-psa-merged branch 2019-02-05 06:02:51 -05:00
threading.c Don't declare and define gmtime()-mutex on Windows platforms 2018-09-06 12:09:56 +01:00
timing.c Merge remote-tracking branch 'public/pr/1777' into development-proposed 2018-11-04 18:51:36 +00:00
version.c Fix missing void argument declarations #678 2016-11-04 23:05:56 +01:00
version_features.c Define MBEDTLS_ECDH_LEGACY_CONTEXT in config.h 2019-02-22 13:04:20 +01:00
x509.c Fix #2370, minor typos and spelling mistakes 2019-01-24 10:37:40 +01:00
x509_create.c Break overly long line in library/x509_create.c 2018-11-02 10:52:38 +00:00
x509_crl.c Rename mbedtls_zeroize to mbedtls_platform_zeroize 2018-04-17 10:00:21 -05:00
x509_crt.c Merge development commit f352f7 into development-psa 2019-02-01 07:03:03 -05:00
x509_csr.c Merge development commit 8e76332 into development-psa 2019-01-31 08:20:20 -05:00
x509write_crt.c Rename mbedtls_zeroize to mbedtls_platform_zeroize 2018-04-17 10:00:21 -05:00
x509write_csr.c x509: remove unnecessary calls to psa_hash_abort 2018-11-22 11:53:04 -05:00
xtea.c Rename mbedtls_zeroize to mbedtls_platform_zeroize 2018-04-17 10:00:21 -05:00