diff options
Diffstat (limited to '')
| -rw-r--r-- | c/sha3.c | 37 |
1 files changed, 26 insertions, 11 deletions
@@ -562,6 +562,8 @@ extern void update(byte* msg, long msglen) long ww = w >> 3; long i, len; byte* message; + byte* _msg; + long nnn; if (mptr + msglen > mlen) { @@ -576,13 +578,14 @@ extern void update(byte* msg, long msglen) message = (byte*)malloc(len); arraycopy(M, 0, message, 0, len); mptr -= len; - revarraycopy(M, len, M, 0, mptr); + revarraycopy(M, nnn = len, M, 0, mptr); + _msg = message; /* Absorbing phase */ if (ww == 8) - for (i = 0; i < len; i += rr) + for (i = 0; i < nnn; i += rr) { - #define __S(Si, OFF) S[Si] ^= toLane64(message, len, rr, i + OFF) + #define __S(Si, OFF) S[Si] ^= toLane64(message + i, len - i, rr, OFF) __S( 0, 0); __S( 5, 8); __S(10, 16); __S(15, 24); __S(20, 32); __S( 1, 40); __S( 6, 48); __S(11, 56); __S(16, 64); __S(21, 72); __S( 2, 80); __S( 7, 88); __S(12, 96); __S(17, 104); __S(22, 112); @@ -590,11 +593,13 @@ extern void update(byte* msg, long msglen) __S( 4, 160); __S( 9, 168); __S(14, 176); __S(19, 184); __S(24, 192); #undef __S keccakF(S); + message += rr; + len -= rr; } else - for (i = 0; i < len; i += rr) + for (i = 0; i < nnn; i += rr) { - #define __S(Si, OFF) S[Si] ^= toLane(message, len, rr, ww, i + OFF * w) + #define __S(Si, OFF) S[Si] ^= toLane(message + i, len - i, rr, ww, OFF * w) __S( 0, 0); __S( 5, 1); __S(10, 2); __S(15, 3); __S(20, 4); __S( 1, 5); __S( 6, 6); __S(11, 7); __S(16, 8); __S(21, 9); __S( 2, 10); __S( 7, 11); __S(12, 12); __S(17, 13); __S(22, 14); @@ -602,9 +607,11 @@ extern void update(byte* msg, long msglen) __S( 4, 20); __S( 9, 21); __S(14, 22); __S(19, 23); __S(24, 24); #undef __S keccakF(S); + message += rr; + len -= rr; } - free(message); + free(_msg); } @@ -619,11 +626,13 @@ extern void update(byte* msg, long msglen) extern byte* digest(byte* msg, long msglen, boolean withReturn) { byte* message; + byte* _msg; byte* rc; long rr = r >> 3, len; long nn = (n + 7) >> 3, olen; long ww = w >> 3, ni; long i, j = 0, ptr = 0, _; + long nnn; if ((msg == null) || (msglen == 0)) message = pad10star1(M, mptr, r, &len); @@ -642,12 +651,14 @@ extern byte* digest(byte* msg, long msglen, boolean withReturn) free(M); M = null; rc = (byte*)malloc((n + 7) >> 3); + _msg = message; + nnn = len; /* Absorbing phase */ if (ww == 8) - for (i = 0; i < len; i += rr) + for (i = 0; i < nnn; i += rr) { - #define __S(Si, OFF) S[Si] ^= toLane64(message, len, rr, i + OFF) + #define __S(Si, OFF) S[Si] ^= toLane64(message, len, rr, OFF) __S( 0, 0); __S( 5, 8); __S(10, 16); __S(15, 24); __S(20, 32); __S( 1, 40); __S( 6, 48); __S(11, 56); __S(16, 64); __S(21, 72); __S( 2, 80); __S( 7, 88); __S(12, 96); __S(17, 104); __S(22, 112); @@ -655,11 +666,13 @@ extern byte* digest(byte* msg, long msglen, boolean withReturn) __S( 4, 160); __S( 9, 168); __S(14, 176); __S(19, 184); __S(24, 192); #undef __S keccakF(S); + message += rr; + len -= rr; } else - for (i = 0; i < len; i += rr) + for (i = 0; i < nnn; i += rr) { - #define __S(Si, OFF) S[Si] ^= toLane(message, len, rr, ww, i + OFF * w) + #define __S(Si, OFF) S[Si] ^= toLane(message, len, rr, ww, OFF * w) __S( 0, 0); __S( 5, 1); __S(10, 2); __S(15, 3); __S(20, 4); __S( 1, 5); __S( 6, 6); __S(11, 7); __S(16, 8); __S(21, 9); __S( 2, 10); __S( 7, 11); __S(12, 12); __S(17, 13); __S(22, 14); @@ -667,9 +680,11 @@ extern byte* digest(byte* msg, long msglen, boolean withReturn) __S( 4, 20); __S( 9, 21); __S(14, 22); __S(19, 23); __S(24, 24); #undef __S keccakF(S); + message += rr; + len -= rr; } - free(message); + free(_msg); /* Squeezing phase */ olen = n; |