diff options
author | Mark Haines <mark.haines@matrix.org> | 2015-03-03 15:08:56 +0000 |
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committer | Mark Haines <mark.haines@matrix.org> | 2015-03-03 15:08:56 +0000 |
commit | 8123ce62094bf88a4107506d7acd3e8e2866bc1f (patch) | |
tree | e7c4284ffbe620deebefc6c1a2db7d77c880553a /include/axolotl | |
parent | 2f2e0340ae46fb37421e13108fae71e710b5515b (diff) |
Constant time comparison for mac
Diffstat (limited to 'include/axolotl')
-rw-r--r-- | include/axolotl/memory.hh | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/include/axolotl/memory.hh b/include/axolotl/memory.hh index 7749c54..8313a19 100644 --- a/include/axolotl/memory.hh +++ b/include/axolotl/memory.hh @@ -1,17 +1,24 @@ #include <cstddef> +#include <cstdint> namespace axolotl { /** Clear the memory held in the buffer */ void unset( - volatile void * buffer, std::size_t buffer_length + void volatile * buffer, std::size_t buffer_length ); /** Clear the memory backing an object */ template<typename T> void unset(T & value) { - unset(reinterpret_cast<volatile void *>(&value), sizeof(T)); + unset(reinterpret_cast<void volatile *>(&value), sizeof(T)); } +/** Check if two buffers are equal in constant time. */ +bool is_equal( + std::uint8_t const * buffer_a, + std::uint8_t const * buffer_b, + std::size_t length +); } // namespace axolotl |