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comparison whirl.c @ 143:5d99163f7e32 libtomcrypt-orig

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import of libtomcrypt 0.99
author Matt Johnston <matt@ucc.asn.au>
date Sun, 19 Dec 2004 11:34:45 +0000
parents 6362d3854bb4
children 7ed585a2c53b
comparison
equal deleted inserted replaced
15:6362d3854bb4 143:5d99163f7e32
48 SB5(GB(a, i-5, 2)) ^ \ 48 SB5(GB(a, i-5, 2)) ^ \
49 SB6(GB(a, i-6, 1)) ^ \ 49 SB6(GB(a, i-6, 1)) ^ \
50 SB7(GB(a, i-7, 0)) 50 SB7(GB(a, i-7, 0))
51 51
52 #ifdef CLEAN_STACK 52 #ifdef CLEAN_STACK
53 static void _whirlpool_compress(hash_state *md, unsigned char *buf) 53 static int _whirlpool_compress(hash_state *md, unsigned char *buf)
54 #else 54 #else
55 static void whirlpool_compress(hash_state *md, unsigned char *buf) 55 static int whirlpool_compress(hash_state *md, unsigned char *buf)
56 #endif 56 #endif
57 { 57 {
58 ulong64 K[2][8], T[3][8]; 58 ulong64 K[2][8], T[3][8];
59 int x, y; 59 int x, y;
60 60
88 K[0][y] = theta_pi_gamma(K[1], y); 88 K[0][y] = theta_pi_gamma(K[1], y);
89 } 89 }
90 /* xor the constant */ 90 /* xor the constant */
91 K[0][0] ^= cont[x+1]; 91 K[0][0] ^= cont[x+1];
92 92
93 /* apply main transform to T[0] into T[1] */ 93 /* apply main transform to T[1] into T[0] */
94 for (y = 0; y < 8; y++) { 94 for (y = 0; y < 8; y++) {
95 T[0][y] = theta_pi_gamma(T[1], y) ^ K[0][y]; 95 T[0][y] = theta_pi_gamma(T[1], y) ^ K[0][y];
96 } 96 }
97 } 97 }
98 98
99 /* store state */ 99 /* store state */
100 for (x = 0; x < 8; x++) { 100 for (x = 0; x < 8; x++) {
101 md->whirlpool.state[x] ^= T[0][x] ^ T[2][x]; 101 md->whirlpool.state[x] ^= T[0][x] ^ T[2][x];
102 } 102 }
103
104 return CRYPT_OK;
103 } 105 }
104 106
105 107
106 #ifdef CLEAN_STACK 108 #ifdef CLEAN_STACK
107 static void whirlpool_compress(hash_state *md, unsigned char *buf) 109 static int whirlpool_compress(hash_state *md, unsigned char *buf)
108 { 110 {
109 _whirlpool_compress(md, buf); 111 int err;
112 err = _whirlpool_compress(md, buf);
110 burn_stack((5 * 8 * sizeof(ulong64)) + (2 * sizeof(int))); 113 burn_stack((5 * 8 * sizeof(ulong64)) + (2 * sizeof(int)));
111 } 114 return err;
112 #endif 115 }
113 116 #endif
114 117
115 void whirlpool_init(hash_state * md) 118
119 int whirlpool_init(hash_state * md)
116 { 120 {
117 _ARGCHK(md != NULL); 121 _ARGCHK(md != NULL);
118 zeromem(&md->whirlpool, sizeof(md->whirlpool)); 122 zeromem(&md->whirlpool, sizeof(md->whirlpool));
123 return CRYPT_OK;
119 } 124 }
120 125
121 HASH_PROCESS(whirlpool_process, whirlpool_compress, whirlpool, 64) 126 HASH_PROCESS(whirlpool_process, whirlpool_compress, whirlpool, 64)
122 127
123 int whirlpool_done(hash_state * md, unsigned char *hash) 128 int whirlpool_done(hash_state * md, unsigned char *hash)