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76 Commits

Author SHA1 Message Date
Simon Butcher
5db13621ec Clarify documentation for AES OFB 
1. Changed reference/link to NIST SP800-38A
 2. Clarified language around AES-OFB usage
 2018-06-11 14:03:22 +01:00
Simon Butcher
00131446be Fix style and formatting for OFB feature 2018-06-11 14:03:22 +01:00
Simon Butcher
ad4e4938d1 Fix AES-OFB support for errors, tests and self-test 
Adds error handling into mbedtls_aes_crypt_ofb for AES errors, a self-test
for the OFB mode using NIST SP 800-38A test vectors and adds a check to
potential return errors in setting the AES encryption key in the OFB test
suite.
 2018-06-11 14:03:22 +01:00
Simon Butcher
76a5b22973 Add OFB block mode to AES-128/192/256 
Adds a new configuration of MBEDTLS_CIPHER_MODE_OFB and OFB mode to AES.
 2018-06-11 14:03:22 +01:00
Simon Butcher
2f3a581567 Merge remote-tracking branch 'public/pr/1178' into development 2018-05-23 16:15:13 +01:00
Mohammad Azim Khan
3f7f8170d6 Check invalid nc_off 
Uninitialized nc_off value >0xf passed by the caller can cause array out-of-bound.
 2018-04-17 23:18:40 +01:00
Andres Amaya Garcia
1f6301b3c8 Rename mbedtls_zeroize to mbedtls_platform_zeroize 2018-04-17 10:00:21 -05:00
Andres Amaya Garcia
e32df087fb Remove individual copies of mbedtls_zeroize() 
This commit removes all the static occurrencies of the function
mbedtls_zeroize() in each of the individual .c modules. Instead the
function has been moved to utils.h that is included in each of the
modules.
 2018-04-17 09:19:05 -05:00
Jaeden Amero
8645e90825 Merge remote-tracking branch 'upstream-restricted/pr/363' into development-proposed 2018-03-28 11:54:28 +01:00
Gilles Peskine
8db3efbc76 Add missing MBEDTLS_DEPRECATED_REMOVED guards 
Add missing MBEDTLS_DEPRECATED_REMOVED guards around the definitions
of mbedtls_aes_decrypt and mbedtls_aes_encrypt.
This fixes the build under -Wmissing-prototypes -Werror.

Fixes #1388
 2018-02-21 19:16:20 +01:00
Gilles Peskine
17196cd3be Merge remote-tracking branch 'upstream-public/pr/964' into development 2018-01-02 16:24:29 +01:00
Hanno Becker
bedc2050b6 Export mbedtls_aes_(en/de)crypt to retain for API compatibility 
The commit f5bf7189d3 made the AES
functions mbedtls_aes_encrypt and mbedtls_aes_decrypt static, changing
the library's API.

This commit reverts this.
 2017-07-27 21:44:33 +01:00
Hanno Becker
ad049a973c Replace #if(n)def by #if (!)defined 2017-06-19 16:31:54 +01:00
Andres Amaya Garcia
d3e7e7d83f Add comment for skipped AES-192 test condition 2017-06-15 16:17:46 +01:00
Andres Amaya Garcia
58f98c23d5 Run AES-192 selftest if available only 
This patch modifies the function mbedtls_aes_selftest() function to
ensure that AES-192 tests are only run if the key size is supported by
the available implementation. This is useful when using MBEDTLS_AES_ALT
as some hardware crypto accelerators might not support AES-192.
 2017-06-14 16:19:42 +01:00
Hanno Becker
177d3cf7bb Rename and document new configuration option for packing AES tables 
This commit renames the new AES table packing option introduced in the
previous MBEDTLS_AES_PACK_TABLES and documents its use and memory vs.
speed tradeoff. It also enhances the documentation of the other
AES-related option MBEDTLS_AES_ROM_TABLES.
 2017-06-09 16:57:44 +01:00
Jussi Kivilinna
2fd1bb8f02 Add option to use smaller AES tables (table sizes reduced by 6144 bytes) 
This patch adds MBEDTLS_AES_SMALL_TABLES option to reduce number of AES
look-up tables and thus save 6 KiB of memory. Enabling this option
cause performance hit MBEDTLS_AES_SMALL_TABLES of ~7% on ARM and ~15%
on x86-64.

Benchmark on Cortex-A7 (armhf):

Before:
  AES-CBC-128              :      14394 Kb/s,          0 cycles/byte
  AES-CBC-192              :      12442 Kb/s,          0 cycles/byte
  AES-CBC-256              :      10958 Kb/s,          0 cycles/byte

After:
  AES-CBC-128              :      13342 Kb/s,          0 cycles/byte
  AES-CBC-192              :      11469 Kb/s,          0 cycles/byte
  AES-CBC-256              :      10058 Kb/s,          0 cycles/byte

Benchmark on Intel Core i5-4570 (x86_64, 3.2 Ghz, no turbo):

Before:
  AES-CBC-128              :     215759 Kb/s,         14 cycles/byte
  AES-CBC-192              :     190884 Kb/s,         16 cycles/byte
  AES-CBC-256              :     171536 Kb/s,         18 cycles/byte

After:
  AES-CBC-128              :     185108 Kb/s,         16 cycles/byte
  AES-CBC-192              :     162839 Kb/s,         19 cycles/byte
  AES-CBC-256              :     144700 Kb/s,         21 cycles/byte
 2017-06-07 15:29:31 +01:00
Andres AG
f5bf7189d3 Change return type of AES decrypt and encrypt 
This patch modifies the following 2 functions in the AES module to
change the return type from void to int:
    * mbedtls_aes_encrypt() -> mbedtls_internal_aes_encrypt()
    * mbedtls_aes_decrypt() -> mbedtls_internal_aes_decrypt()
This change is necessary to allow users of MBEDTLS_AES_ALT,
MBEDTLS_AES_DECRYPT_ALT and MBEDTLS_AES_ENCRYPT_ALT to return an error
code when replacing the default with their own implementation, e.g.
a hardware crypto accelerator.
 2017-05-16 10:22:37 +01:00
Jussi Kivilinna
4b541bec0f Fix unused variable in AES selftest when CBC and CFB disabled (#393) 
This commit fixes following warning:

> CC:  aes.c
> aes.c: In function 'mbedtls_aes_self_test':
> aes.c:1225:19: error: unused variable 'iv' [-Werror=unused-variable]
>      unsigned char iv[16];
>                    ^
> cc1: all warnings being treated as errors
 2016-06-22 16:48:16 +01:00
Simon Butcher
88ffc089bc Adds casts to zeroize functions to allow building as C++ 2016-05-23 14:29:32 +01:00
Manuel Pégourié-Gonnard
37ff14062e Change main license to Apache 2.0 2015-09-04 14:21:07 +02:00
Manuel Pégourié-Gonnard
6fb8187279 Update date in copyright line 2015-07-28 17:11:58 +02:00
Manuel Pégourié-Gonnard
b8186a5e54 Rename len to bitlen in function parameters 
Clarify a few comments too.
 2015-06-18 14:58:58 +02:00
Manuel Pégourié-Gonnard
c730ed3f2d Rename boolean functions to be clearer 2015-06-02 10:38:50 +01:00
Manuel Pégourié-Gonnard
31993f271d Add per-function override for AES 2015-05-12 15:41:08 +02:00
Manuel Pégourié-Gonnard
2cf5a7c98e The Great Renaming 
A simple execution of tmp/invoke-rename.pl
 2015-04-08 13:25:31 +02:00
Manuel Pégourié-Gonnard
7f8099773e Rename include directory to mbedtls 2015-03-10 11:23:56 +00:00
Manuel Pégourié-Gonnard
fe44643b0e Rename website and repository 2015-03-06 13:17:10 +00:00
Rich Evans
00ab47026b cleanup library and some basic tests. Includes, add guards to includes 2015-02-10 11:28:46 +00:00
Manuel Pégourié-Gonnard
860b51642d Fix url again 2015-01-28 17:12:07 +00:00
Manuel Pégourié-Gonnard
ceedb8292e Fix possible portability issue 
The & 0xFF should not be necessary on platforms with 8-bit chars, but one user
reported having problems with his compiler on such a platform.
 2015-01-28 15:28:30 +01:00
Manuel Pégourié-Gonnard
085ab040aa Fix website url to use https. 2015-01-23 11:06:27 +00:00
Manuel Pégourié-Gonnard
9698f5852c Remove maintainer line. 2015-01-23 10:59:00 +00:00
Manuel Pégourié-Gonnard
19f6b5dfaa Remove redundant "all rights reserved" 2015-01-23 10:54:00 +00:00
Manuel Pégourié-Gonnard
a658a4051b Update copyright 2015-01-23 09:55:24 +00:00
Manuel Pégourié-Gonnard
967a2a5f8c Change name to mbed TLS in the copyright notice 2015-01-22 14:28:16 +00:00
Paul Bakker
c7ea99af4f Add _init() and _free() for cipher modules 2014-07-09 10:19:22 +02:00
Paul Bakker
66d5d076f7 Fix formatting in various code to match spacing from coding style 2014-06-17 17:06:47 +02:00
Paul Bakker
3461772559 Introduce polarssl_zeroize() instead of memset() for zeroization 2014-06-14 16:46:03 +02:00
Manuel Pégourié-Gonnard
afd5a08e33 Minor tune-up in aes code 
un-duplicate a check, and remove useless default case, mainly so that these
lines don't appear as uncovered
 2014-06-12 21:15:55 +02:00
Paul Bakker
b9e4e2c97a Fix formatting: fix some 'easy' > 80 length lines 2014-05-01 14:18:25 +02:00
Paul Bakker
9af723cee7 Fix formatting: remove trailing spaces, #endif with comments (> 10 lines) 2014-05-01 13:03:14 +02:00
Manuel Pégourié-Gonnard
cef4ad2509 Adapt sources to configurable config.h name 2014-04-30 16:40:20 +02:00
Manuel Pégourié-Gonnard
1ec220b002 Add missing #ifdefs in aes.h 2014-03-13 19:25:06 +01:00
Paul Bakker
7dc4c44267 Library files moved to use platform layer 2014-02-06 13:20:16 +01:00
Paul Bakker
556efba51c Added AES CFB8 mode 2014-01-24 15:38:12 +01:00
Paul Bakker
0d0de92156 Only specify done label in aes.c when AES-NI is possible 2013-12-30 15:29:04 +01:00
Manuel Pégourié-Gonnard
bfa3c9a85f Remove temporary code 2013-12-30 13:53:58 +01:00
Manuel Pégourié-Gonnard
47a3536a31 Add AES-NI key expansion for 128 bits 2013-12-29 13:28:59 +01:00
Manuel Pégourié-Gonnard
01e31bbffb Add support for key inversion using AES-NI 2013-12-28 16:22:08 +01:00