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SM3 without W' table

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Zhi Guan
2019-08-14 23:19:45 +08:00
parent ea7a467e1b
commit ef134a58f0
1 changed files with 3 additions and 6 deletions
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9
crypto/sm3/sm3.c
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@@ -157,7 +157,7 @@ void sm3_compress(uint32_t digest[8], const unsigned char block[64])
uint32_t F = digest[5];
uint32_t G = digest[6];
uint32_t H = digest[7];
uint32_t W[68], W1[64];
uint32_t W[68];
uint32_t SS1, SS2, TT1, TT2;
int j;
@@ -168,13 +168,10 @@ void sm3_compress(uint32_t digest[8], const unsigned char block[64])
W[j] = P1(W[j - 16] ^ W[j - 9] ^ ROL32(W[j - 3], 15))
^ ROL32(W[j - 13], 7) ^ W[j - 6];
for(j = 0; j < 64; j++)
W1[j] = W[j] ^ W[j + 4];
for (j = 0; j < 16; j++) {
SS1 = ROL32((ROL32(A, 12) + E + K[j]), 7);
SS2 = SS1 ^ ROL32(A, 12);
TT1 = FF00(A, B, C) + D + SS2 + W1[j];
TT1 = FF00(A, B, C) + D + SS2 + (W[j] ^ W[j + 4]);
TT2 = GG00(E, F, G) + H + SS1 + W[j];
D = C;
C = ROL32(B, 9);
@@ -189,7 +186,7 @@ void sm3_compress(uint32_t digest[8], const unsigned char block[64])
for (; j < 64; j++) {
SS1 = ROL32((ROL32(A, 12) + E + K[j]), 7);
SS2 = SS1 ^ ROL32(A, 12);
TT1 = FF16(A, B, C) + D + SS2 + W1[j];
TT1 = FF16(A, B, C) + D + SS2 + (W[j] ^ W[j + 4]);
TT2 = GG16(E, F, G) + H + SS1 + W[j];
D = C;
C = ROL32(B, 9);