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| author | Nick Mathewson <nickm@torproject.org> | 2012-12-25 22:22:07 -0500 |
|---|---|---|
| committer | Nick Mathewson <nickm@torproject.org> | 2013-01-03 11:29:48 -0500 |
| commit | f07a5125cb5bb9ee5968ded163cfdd73e5ad028c (patch) | |
| tree | 03444d1dbfe2a58e242e9923728971c7303717b9 /src/common/di_ops.h | |
| parent | 92d6a83e9895da874eae81e20e14df20231f25bf (diff) | |
| download | tor-f07a5125cb5bb9ee5968ded163cfdd73e5ad028c.tar tor-f07a5125cb5bb9ee5968ded163cfdd73e5ad028c.tar.gz | |
Implement a constant-time safe_mem_is_zero.
Diffstat (limited to 'src/common/di_ops.h')
| -rw-r--r-- | src/common/di_ops.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/src/common/di_ops.h b/src/common/di_ops.h index a86f56c96..144482811 100644 --- a/src/common/di_ops.h +++ b/src/common/di_ops.h @@ -27,6 +27,8 @@ int tor_memeq(const void *a, const void *b, size_t sz); #define fast_memeq(a,b,c) (0==memcmp((a),(b),(c))) #define fast_memneq(a,b,c) (0!=memcmp((a),(b),(c))) +int safe_mem_is_zero(const void *mem, size_t sz); + /** A type for a map from DIGEST256_LEN-byte blobs to void*, such that * data lookups take an amount of time proportional only to the size * of the map, and not to the position or presence of the item in the map. |