| 1 | /* |
| 2 | ** Copyright 2008 Double Precision, Inc. |
| 3 | ** See COPYING for distribution information. |
| 4 | */ |
| 5 | |
| 6 | #define SHA1_INTERNAL |
| 7 | #include "sha1.h" |
| 8 | |
| 9 | #include <string.h> |
| 10 | #include <stdlib.h> |
| 11 | |
| 12 | |
| 13 | #define ROTR(x,n) ((SHA512_WORD)(((SHA512_WORD)(x) >> (n))|((x) << (64-(n))))) |
| 14 | |
| 15 | #define ROTL(x,n) ((SHA512_WORD)(((SHA512_WORD)(x) << (n))|((x) >> (64-(n))))) |
| 16 | |
| 17 | |
| 18 | #define CH(x,y,z) ((SHA512_WORD)(((x) & (y)) ^ ((~(x))&(z)))) |
| 19 | #define MAJ(x,y,z) ((SHA512_WORD)(((x)&(y))^((x)&(z))^((y)&(z)))) |
| 20 | |
| 21 | #define SUM0(x) ((SHA512_WORD)(ROTR((x),28)^ROTR((x),34)^ROTR((x),39))) |
| 22 | #define SUM1(x) ((SHA512_WORD)(ROTR((x),14)^ROTR((x),18)^ROTR((x),41))) |
| 23 | |
| 24 | #define TH0(x) ((SHA512_WORD)(ROTR((x),1)^ROTR((x),8)^((SHA512_WORD)(x)>>7))) |
| 25 | #define TH1(x) ((SHA512_WORD)(ROTR((x),19)^ROTR((x),61)^((SHA512_WORD)(x)>>6))) |
| 26 | |
| 27 | static const SHA512_WORD K[80]={ |
| 28 | 0x428a2f98d728ae22ULL, 0x7137449123ef65cdULL, 0xb5c0fbcfec4d3b2fULL, 0xe9b5dba58189dbbcULL, |
| 29 | 0x3956c25bf348b538ULL, 0x59f111f1b605d019ULL, 0x923f82a4af194f9bULL, 0xab1c5ed5da6d8118ULL, |
| 30 | 0xd807aa98a3030242ULL, 0x12835b0145706fbeULL, 0x243185be4ee4b28cULL, 0x550c7dc3d5ffb4e2ULL, |
| 31 | 0x72be5d74f27b896fULL, 0x80deb1fe3b1696b1ULL, 0x9bdc06a725c71235ULL, 0xc19bf174cf692694ULL, |
| 32 | 0xe49b69c19ef14ad2ULL, 0xefbe4786384f25e3ULL, 0x0fc19dc68b8cd5b5ULL, 0x240ca1cc77ac9c65ULL, |
| 33 | 0x2de92c6f592b0275ULL, 0x4a7484aa6ea6e483ULL, 0x5cb0a9dcbd41fbd4ULL, 0x76f988da831153b5ULL, |
| 34 | 0x983e5152ee66dfabULL, 0xa831c66d2db43210ULL, 0xb00327c898fb213fULL, 0xbf597fc7beef0ee4ULL, |
| 35 | 0xc6e00bf33da88fc2ULL, 0xd5a79147930aa725ULL, 0x06ca6351e003826fULL, 0x142929670a0e6e70ULL, |
| 36 | 0x27b70a8546d22ffcULL, 0x2e1b21385c26c926ULL, 0x4d2c6dfc5ac42aedULL, 0x53380d139d95b3dfULL, |
| 37 | 0x650a73548baf63deULL, 0x766a0abb3c77b2a8ULL, 0x81c2c92e47edaee6ULL, 0x92722c851482353bULL, |
| 38 | 0xa2bfe8a14cf10364ULL, 0xa81a664bbc423001ULL, 0xc24b8b70d0f89791ULL, 0xc76c51a30654be30ULL, |
| 39 | 0xd192e819d6ef5218ULL, 0xd69906245565a910ULL, 0xf40e35855771202aULL, 0x106aa07032bbd1b8ULL, |
| 40 | 0x19a4c116b8d2d0c8ULL, 0x1e376c085141ab53ULL, 0x2748774cdf8eeb99ULL, 0x34b0bcb5e19b48a8ULL, |
| 41 | 0x391c0cb3c5c95a63ULL, 0x4ed8aa4ae3418acbULL, 0x5b9cca4f7763e373ULL, 0x682e6ff3d6b2b8a3ULL, |
| 42 | 0x748f82ee5defb2fcULL, 0x78a5636f43172f60ULL, 0x84c87814a1f0ab72ULL, 0x8cc702081a6439ecULL, |
| 43 | 0x90befffa23631e28ULL, 0xa4506cebde82bde9ULL, 0xbef9a3f7b2c67915ULL, 0xc67178f2e372532bULL, |
| 44 | 0xca273eceea26619cULL, 0xd186b8c721c0c207ULL, 0xeada7dd6cde0eb1eULL, 0xf57d4f7fee6ed178ULL, |
| 45 | 0x06f067aa72176fbaULL, 0x0a637dc5a2c898a6ULL, 0x113f9804bef90daeULL, 0x1b710b35131c471bULL, |
| 46 | 0x28db77f523047d84ULL, 0x32caab7b40c72493ULL, 0x3c9ebe0a15c9bebcULL, 0x431d67c49c100d4cULL, |
| 47 | 0x4cc5d4becb3e42b6ULL, 0x597f299cfc657e2aULL, 0x5fcb6fab3ad6faecULL, 0x6c44198c4a475817ULL}; |
| 48 | |
| 49 | void sha512_context_init(struct SHA512_CONTEXT *c) |
| 50 | { |
| 51 | if (sizeof(SHA512_WORD) != 8) |
| 52 | abort(); |
| 53 | |
| 54 | c->H[0] = 0x6a09e667f3bcc908ULL; |
| 55 | c->H[1] = 0xbb67ae8584caa73bULL; |
| 56 | c->H[2] = 0x3c6ef372fe94f82bULL; |
| 57 | c->H[3] = 0xa54ff53a5f1d36f1ULL; |
| 58 | c->H[4] = 0x510e527fade682d1ULL; |
| 59 | c->H[5] = 0x9b05688c2b3e6c1fULL; |
| 60 | c->H[6] = 0x1f83d9abfb41bd6bULL; |
| 61 | c->H[7] = 0x5be0cd19137e2179ULL; |
| 62 | |
| 63 | c->blk_ptr=0; |
| 64 | } |
| 65 | |
| 66 | void sha512_context_hash(struct SHA512_CONTEXT *cc, |
| 67 | const unsigned char blk[SHA512_BLOCK_SIZE]) |
| 68 | { |
| 69 | SHA512_WORD W[80]; |
| 70 | unsigned i, t; |
| 71 | SHA512_WORD a,b,c,d,e,f,g,h; |
| 72 | |
| 73 | for (i=t=0; t<16; t++) |
| 74 | { |
| 75 | SHA512_WORD x=blk[i]; i++; |
| 76 | |
| 77 | x=(x << 8) | blk[i]; i++; |
| 78 | x=(x << 8) | blk[i]; i++; |
| 79 | x=(x << 8) | blk[i]; i++; |
| 80 | x=(x << 8) | blk[i]; i++; |
| 81 | x=(x << 8) | blk[i]; i++; |
| 82 | x=(x << 8) | blk[i]; i++; |
| 83 | W[t]=(x << 8) | blk[i]; i++; |
| 84 | } |
| 85 | |
| 86 | for (t=16; t<80; t++) |
| 87 | W[t]= TH1(W[t-2]) + W[t-7] + TH0(W[t-15]) + W[t-16]; |
| 88 | |
| 89 | a=cc->H[0]; |
| 90 | b=cc->H[1]; |
| 91 | c=cc->H[2]; |
| 92 | d=cc->H[3]; |
| 93 | e=cc->H[4]; |
| 94 | f=cc->H[5]; |
| 95 | g=cc->H[6]; |
| 96 | h=cc->H[7]; |
| 97 | |
| 98 | for (t=0; t<80; t++) |
| 99 | { |
| 100 | SHA512_WORD T1=h + SUM1(e) + CH(e,f,g) + K[t] + W[t]; |
| 101 | SHA512_WORD T2=SUM0(a)+MAJ(a,b,c); |
| 102 | h=g; |
| 103 | g=f; |
| 104 | f=e; |
| 105 | e=d+T1; |
| 106 | d=c; |
| 107 | c=b; |
| 108 | b=a; |
| 109 | a=T1+T2; |
| 110 | } |
| 111 | |
| 112 | cc->H[0] += a; |
| 113 | cc->H[1] += b; |
| 114 | cc->H[2] += c; |
| 115 | cc->H[3] += d; |
| 116 | cc->H[4] += e; |
| 117 | cc->H[5] += f; |
| 118 | cc->H[6] += g; |
| 119 | cc->H[7] += h; |
| 120 | } |
| 121 | |
| 122 | void sha512_context_hashstream(struct SHA512_CONTEXT *c, const void *p, unsigned l) |
| 123 | { |
| 124 | const unsigned char *cp=(const unsigned char *)p; |
| 125 | unsigned ll; |
| 126 | |
| 127 | while (l) |
| 128 | { |
| 129 | if (c->blk_ptr == 0 && l >= SHA512_BLOCK_SIZE) |
| 130 | { |
| 131 | sha512_context_hash(c, cp); |
| 132 | cp += SHA512_BLOCK_SIZE; |
| 133 | l -= SHA512_BLOCK_SIZE; |
| 134 | continue; |
| 135 | } |
| 136 | |
| 137 | ll=l; |
| 138 | if (ll > SHA512_BLOCK_SIZE - c->blk_ptr) |
| 139 | ll=SHA512_BLOCK_SIZE - c->blk_ptr; |
| 140 | memcpy(c->blk + c->blk_ptr, cp, ll); |
| 141 | c->blk_ptr += ll; |
| 142 | cp += ll; |
| 143 | l -= ll; |
| 144 | if (c->blk_ptr >= SHA512_BLOCK_SIZE) |
| 145 | { |
| 146 | sha512_context_hash(c, c->blk); |
| 147 | c->blk_ptr=0; |
| 148 | } |
| 149 | } |
| 150 | } |
| 151 | |
| 152 | void sha512_context_endstream(struct SHA512_CONTEXT *c, SHA512_WORD l) |
| 153 | { |
| 154 | unsigned char buf[16]; |
| 155 | size_t i; |
| 156 | static const unsigned char zero[SHA512_BLOCK_SIZE-8]; |
| 157 | |
| 158 | buf[0]=0x80; |
| 159 | sha512_context_hashstream(c, &buf, 1); |
| 160 | while (c->blk_ptr != SHA512_BLOCK_SIZE-16) |
| 161 | { |
| 162 | if (c->blk_ptr > SHA512_BLOCK_SIZE-16) |
| 163 | { |
| 164 | sha512_context_hashstream(c, zero, |
| 165 | SHA512_BLOCK_SIZE - c->blk_ptr); |
| 166 | continue; |
| 167 | } |
| 168 | sha512_context_hashstream(c, zero, |
| 169 | SHA512_BLOCK_SIZE-16-c->blk_ptr); |
| 170 | } |
| 171 | |
| 172 | l *= 8; |
| 173 | |
| 174 | for (i=0; i<16; i++) |
| 175 | { |
| 176 | buf[15-i]=l; |
| 177 | l >>= 8; |
| 178 | } |
| 179 | |
| 180 | sha512_context_hashstream(c, buf, sizeof(buf)); |
| 181 | } |
| 182 | |
| 183 | void sha512_context_digest(struct SHA512_CONTEXT *c, SHA512_DIGEST d) |
| 184 | { |
| 185 | unsigned char *dp=d + SHA512_DIGEST_SIZE; |
| 186 | unsigned i; |
| 187 | |
| 188 | for ( i=8; i; ) |
| 189 | { |
| 190 | SHA512_WORD w=c->H[--i]; |
| 191 | |
| 192 | *--dp=w; w >>= 8; |
| 193 | *--dp=w; w >>= 8; |
| 194 | *--dp=w; w >>= 8; |
| 195 | *--dp=w; w >>= 8; |
| 196 | *--dp=w; w >>= 8; |
| 197 | *--dp=w; w >>= 8; |
| 198 | *--dp=w; w >>= 8; |
| 199 | *--dp=w; |
| 200 | } |
| 201 | } |
| 202 | |
| 203 | void sha512_context_restore(struct SHA512_CONTEXT *c, const SHA512_DIGEST d) |
| 204 | { |
| 205 | const unsigned char *dp=d; |
| 206 | unsigned i; |
| 207 | |
| 208 | for (i=0; i<8; i++) |
| 209 | { |
| 210 | SHA512_WORD w= *dp++; |
| 211 | |
| 212 | w=(w << 8) | *dp++; |
| 213 | w=(w << 8) | *dp++; |
| 214 | w=(w << 8) | *dp++; |
| 215 | w=(w << 8) | *dp++; |
| 216 | w=(w << 8) | *dp++; |
| 217 | w=(w << 8) | *dp++; |
| 218 | w=(w << 8) | *dp++; |
| 219 | c->H[i]=w; |
| 220 | } |
| 221 | c->blk_ptr=0; |
| 222 | } |
| 223 | |
| 224 | void sha512_digest(const void *msg, unsigned len, SHA512_DIGEST d) |
| 225 | { |
| 226 | struct SHA512_CONTEXT c; |
| 227 | |
| 228 | sha512_context_init( &c ); |
| 229 | sha512_context_hashstream(&c, msg, len); |
| 230 | sha512_context_endstream(&c, len); |
| 231 | sha512_context_digest( &c, d ); |
| 232 | } |