diff options
Diffstat (limited to 'libs/libaxolotl/src/curve25519/ed25519/fe_cmov.c')
-rw-r--r-- | libs/libaxolotl/src/curve25519/ed25519/fe_cmov.c | 63 |
1 files changed, 0 insertions, 63 deletions
diff --git a/libs/libaxolotl/src/curve25519/ed25519/fe_cmov.c b/libs/libaxolotl/src/curve25519/ed25519/fe_cmov.c deleted file mode 100644 index 8ca584fb19..0000000000 --- a/libs/libaxolotl/src/curve25519/ed25519/fe_cmov.c +++ /dev/null @@ -1,63 +0,0 @@ -#include "fe.h" - -/* -Replace (f,g) with (g,g) if b == 1; -replace (f,g) with (f,g) if b == 0. - -Preconditions: b in {0,1}. -*/ - -void fe_cmov(fe f,const fe g,unsigned int b) -{ - crypto_int32 f0 = f[0]; - crypto_int32 f1 = f[1]; - crypto_int32 f2 = f[2]; - crypto_int32 f3 = f[3]; - crypto_int32 f4 = f[4]; - crypto_int32 f5 = f[5]; - crypto_int32 f6 = f[6]; - crypto_int32 f7 = f[7]; - crypto_int32 f8 = f[8]; - crypto_int32 f9 = f[9]; - crypto_int32 g0 = g[0]; - crypto_int32 g1 = g[1]; - crypto_int32 g2 = g[2]; - crypto_int32 g3 = g[3]; - crypto_int32 g4 = g[4]; - crypto_int32 g5 = g[5]; - crypto_int32 g6 = g[6]; - crypto_int32 g7 = g[7]; - crypto_int32 g8 = g[8]; - crypto_int32 g9 = g[9]; - crypto_int32 x0 = f0 ^ g0; - crypto_int32 x1 = f1 ^ g1; - crypto_int32 x2 = f2 ^ g2; - crypto_int32 x3 = f3 ^ g3; - crypto_int32 x4 = f4 ^ g4; - crypto_int32 x5 = f5 ^ g5; - crypto_int32 x6 = f6 ^ g6; - crypto_int32 x7 = f7 ^ g7; - crypto_int32 x8 = f8 ^ g8; - crypto_int32 x9 = f9 ^ g9; - b = -b; - x0 &= b; - x1 &= b; - x2 &= b; - x3 &= b; - x4 &= b; - x5 &= b; - x6 &= b; - x7 &= b; - x8 &= b; - x9 &= b; - f[0] = f0 ^ x0; - f[1] = f1 ^ x1; - f[2] = f2 ^ x2; - f[3] = f3 ^ x3; - f[4] = f4 ^ x4; - f[5] = f5 ^ x5; - f[6] = f6 ^ x6; - f[7] = f7 ^ x7; - f[8] = f8 ^ x8; - f[9] = f9 ^ x9; -} |