diff options
| author | Amitay Isaacs <amitay@ozlabs.org> | 2021-02-01 16:20:12 +1100 |
|---|---|---|
| committer | Matt Caswell <matt@openssl.org> | 2021-04-08 12:18:10 +0100 |
| commit | ceaa6b319e01bd1ac74e3e7c5662745d3d3b3b9d (patch) | |
| tree | 2c8ebf6f43ecd04198eb6c185836bc6942bbcedf | |
| parent | eb7bcff67c6bbd9cb463c44035afd00c37ca327f (diff) | |
Add a constant time zero check function for 64-bit integers
Signed-off-by: Amitay Isaacs <amitay@ozlabs.org>
Reviewed-by: Tomas Mraz <tomas@openssl.org>
Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/14784)
| -rw-r--r-- | include/internal/constant_time.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/include/internal/constant_time.h b/include/internal/constant_time.h index cb4ce80830..0ed6f823c1 100644 --- a/include/internal/constant_time.h +++ b/include/internal/constant_time.h @@ -182,6 +182,11 @@ static ossl_inline uint32_t constant_time_is_zero_32(uint32_t a) return constant_time_msb_32(~a & (a - 1)); } +static ossl_inline uint64_t constant_time_is_zero_64(uint64_t a) +{ + return constant_time_msb_64(~a & (a - 1)); +} + static ossl_inline unsigned int constant_time_eq(unsigned int a, unsigned int b) { |