Commit Graph

37 Commits

Author SHA1 Message Date
Janos Follath
e3d882ad4a Remove unnecessary flag from CMAC context 2016-10-11 13:38:36 +01:00
Simon Butcher
6b0774ab1a Fix issues in CMAC in repeated updates
Successive calls to mbedtls_cipher_cmac_update() which weren't block aligned
were failing, which is fixed by this commit.
2016-10-11 12:25:04 +01:00
Simon Butcher
420be4ea04 Fix bracketing in cmac.c
The bracketing in some expressions where an assignment was being made in an if statement in cmac.c had been accidentally broken and was causing compiler warnings with armcc.
2016-10-07 12:55:43 +01:00
Andres AG
a592dcc1c6 Clean up of formatting, and potential integer overflow fix 2016-10-06 15:23:39 +01:00
Simon Butcher
d241f1cf17 Fixes following review
Fixes issue of not zeroing entire block on reset and conditional compilation.
2016-10-06 12:53:33 +01:00
Simon Butcher
69283e51d5 Clean up and minor fixes following review
Minor fixes following review including:
    * formatting changes including indentation and code style
    * corrections
    * removal of debug code
    * clarification of code through variable renaming
    * memory leak
    * compiler warnings
2016-10-06 12:49:58 +01:00
Simon Butcher
94ffde7b0a Fix CMAC interface for doxygen
Parameters didn't match the function definition.
2016-10-05 15:33:53 +01:00
Simon Butcher
327398ad3a Refactor and change CMAC interface
Change the CMAC interface to match the mbedtls_md_hmac_xxxx() interface. This
changes the overall design of the CMAC interface to make it more consistent with
the existing HMAC interface, and will allow incremental updates of input data
rather than requiring all data to be presented at once, which is what the
current interface requires.
2016-10-05 14:19:18 +01:00
Brian Murray
8b4111c516 Fix build failure for thread config 2016-10-05 14:19:17 +01:00
Brian Murray
72b69e3808 Minor fixes to comments 2016-10-05 14:19:17 +01:00
Brian Murray
53e23b684f Minor CMAC fixes for merge 2016-10-05 14:19:17 +01:00
Brian Murray
9ce2e091de cleaned up indentation and braket issues in mbedtls_cmac_verify 2016-10-05 14:19:17 +01:00
Brian Murray
ae1cb12d82 Changed test function to inline to pass tests/scripts/check-names.sh 2016-10-05 14:19:17 +01:00
Brian Murray
0cf14c10d4 Fixed some build warnings 2016-10-05 14:19:17 +01:00
Brian Murray
6a3c0d2d67 Do not zeroize null pointer 2016-10-05 14:19:17 +01:00
Brian Murray
4b64ab6664 Removed unneed memsets and fixed spacing 2016-10-05 14:19:16 +01:00
Brian Murray
87e4040bb9 No CMAC minimum tag length is specified by NIST SP800-38B A
Minor Typo Changes
2016-10-05 14:19:16 +01:00
Brian Murray
617634e656 cmac.c whitespace cleanup 2016-10-05 14:19:16 +01:00
Brian Murray
2cfa5072ed better handling of failed calloc 2016-10-05 14:19:16 +01:00
Brian Murray
57863ad7ed selftest supports cmac if only MBEDTLS_DES_C is defined
Other minor typo fixes
2016-10-05 14:19:16 +01:00
Brian Murray
9044b0295c More cleanup of CMAC self tests 2016-10-05 14:19:16 +01:00
Brian Murray
b439d4556d Only compile AES CMAC PRF support if MBEDTLS_AES_C is defined and other cleanups 2016-10-05 14:19:16 +01:00
Brian Murray
0f6af73599 More cleanup of CMAC selftests 2016-10-05 14:19:15 +01:00
Brian Murray
00dc5f0fc8 Fixed CMAC tag length 2016-10-05 14:19:15 +01:00
Brian Murray
b0c3c43dec CMAC support for cipher with 64bit blocks (DES/3DES) 2016-10-05 14:19:15 +01:00
Manuel Pégourié-Gonnard
7b555f2928 cmac: more cosmetic changes 2016-10-05 14:19:15 +01:00
Manuel Pégourié-Gonnard
ab9c5fd9b3 cmac: avoid useless wrapping of function
probably a leftover from an earlier stage
2016-10-05 14:19:15 +01:00
Manuel Pégourié-Gonnard
d18c70708e cmac: reduce visibility of macros
The #undef is usefull for people who want to to amalgamated releases
2016-10-05 14:19:15 +01:00
Manuel Pégourié-Gonnard
2c06306364 cmac: some more padding-related tune-ups
- use one less temporary buffer
- pedantic: in_len + 15 was a potential overflow
- use a more explicit name instead of 'flag'
- Mn was a bit misleading
2016-10-05 14:19:14 +01:00
Manuel Pégourié-Gonnard
d2c3d3eddb cmac: clean up padding function and comments 2016-10-05 14:19:14 +01:00
Manuel Pégourié-Gonnard
475f06f609 cmac: make subkey gen more constant-time
The previous version had secret-dependent memory accesses. While it was
probably not an issue in practice cause the two bytes of the array are
probably on the same cache line anyway, as a matter of principle this should
be avoided.
2016-10-05 14:19:14 +01:00
Manuel Pégourié-Gonnard
d6cf75474b cmac: zeroize sensitive intermediate values 2016-10-05 14:19:14 +01:00
Manuel Pégourié-Gonnard
a610b4c04b cmac: factor multiply by u to its own function
We're doing exactly the same operation for K1 and K2.
2016-10-05 14:19:14 +01:00
Manuel Pégourié-Gonnard
3da5402a89 cmac: fix whitespace/codingstyle issues 2016-10-05 14:19:14 +01:00
Manuel Pégourié-Gonnard
690083c21d cmac: improve argument order and naming
- always use the pattern "buffer, length"
- avoid using unqualified "length" as a name when there are more than one
2016-10-05 14:19:14 +01:00
Robert Cragie
3d23b1d5ed Line endings wrong 2016-10-05 14:19:14 +01:00
Robert Cragie
dc5c7b98ac Add support for AES-128-CMAC and AES-CMAC-PRF-128 2016-10-05 14:19:13 +01:00