arm-trusted-firmware/drivers/auth
Antonio Nino Diaz b621fb503c tbbr: Use constant-time bcmp() to compare hashes
To avoid timing side-channel attacks, it is needed to use a constant
time memory comparison function when comparing hashes. The affected
code only cheks for equality so it isn't needed to use any variant of
memcmp(), bcmp() is enough.

Also, timingsafe_bcmp() is as fast as memcmp() when the two compared
regions are equal, so this change incurrs no performance hit in said
case. In case they are unequal, the boot sequence wouldn't continue as
normal, so performance is not an issue.

Change-Id: I1c7c70ddfa4438e6031c8814411fef79fd3bb4df
Signed-off-by: Antonio Nino Diaz <antonio.ninodiaz@arm.com>
2017-01-24 14:42:13 +00:00
..
mbedtls tbbr: Use constant-time bcmp() to compare hashes 2017-01-24 14:42:13 +00:00
tbbr TBB: add non-volatile counter support 2016-03-31 13:29:17 +01:00
auth_mod.c tbbr: Fix updating of Non-Trusted NV counter 2016-12-15 14:12:35 +00:00
crypto_mod.c TBB: add authentication framework 2015-06-25 08:53:26 +01:00
img_parser_mod.c TBB: add authentication framework 2015-06-25 08:53:26 +01:00