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author | Gluzskiy Alexandr <sss@sss.chaoslab.ru> | 2017-02-13 07:56:33 +0300 |
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committer | Gluzskiy Alexandr <sss@sss.chaoslab.ru> | 2017-02-13 09:09:08 +0300 |
commit | 193f645f65ad4ffdec3186e4176b23af10861199 (patch) | |
tree | e1b16b48ac74c5f03f99a98798e849f6dd9752cc /libs/libaxolotl/src/curve25519/ed25519/additions/fe_isequal.c | |
parent | 36c32a13878d3bd94e88bd9c764f1eadb05ea1ed (diff) |
libs:
libaxolotl:
updated libaxolotl (libsignal-c) from (https://github.com/WhisperSystems/libsignal-protocol-c)
Diffstat (limited to 'libs/libaxolotl/src/curve25519/ed25519/additions/fe_isequal.c')
-rw-r--r-- | libs/libaxolotl/src/curve25519/ed25519/additions/fe_isequal.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/libs/libaxolotl/src/curve25519/ed25519/additions/fe_isequal.c b/libs/libaxolotl/src/curve25519/ed25519/additions/fe_isequal.c new file mode 100644 index 0000000000..67c5d33c96 --- /dev/null +++ b/libs/libaxolotl/src/curve25519/ed25519/additions/fe_isequal.c @@ -0,0 +1,14 @@ +#include "fe.h" +#include "crypto_verify_32.h" + +/* +return 1 if f == g +return 0 if f != g +*/ + +int fe_isequal(const fe f, const fe g) +{ + fe h; + fe_sub(h, f, g); + return 1 ^ (1 & (fe_isnonzero(h) >> 8)); +} |