lib/hcrypto/sha512.c

   1 /*
   2  * Copyright (c) 2006, 2010 Kungliga Tekniska Högskolan
   3  * (Royal Institute of Technology, Stockholm, Sweden).
   4  * All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  *
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  *
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in the
  15  *    documentation and/or other materials provided with the distribution.
  16  *
  17  * 3. Neither the name of the Institute nor the names of its contributors
  18  *    may be used to endorse or promote products derived from this software
  19  *    without specific prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
  22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
  25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  31  * SUCH DAMAGE.
  32  */
  33
  34 #include "config.h"
  35
  36 #include "hash.h"
  37 #include "sha.h"
  38
  39 #define Ch(x,y,z) (((x) & (y)) ^ ((~(x)) & (z)))
  40 #define Maj(x,y,z) (((x) & (y)) ^ ((x) & (z)) ^ ((y) & (z)))
  41
  42 #define ROTR(x,n)   (((x)>>(n)) | ((x) << (64 - (n))))
  43
  44 #define Sigma0(x)       (ROTR(x,28) ^ ROTR(x,34) ^ ROTR(x,39))
  45 #define Sigma1(x)       (ROTR(x,14) ^ ROTR(x,18) ^ ROTR(x,41))
  46 #define sigma0(x)       (ROTR(x,1)  ^ ROTR(x,8)  ^ ((x)>>7))
  47 #define sigma1(x)       (ROTR(x,19) ^ ROTR(x,61) ^ ((x)>>6))
  48
  49 #define A m->counter[0]
  50 #define B m->counter[1]
  51 #define C m->counter[2]
  52 #define D m->counter[3]
  53 #define E m->counter[4]
  54 #define F m->counter[5]
  55 #define G m->counter[6]
  56 #define H m->counter[7]
  57
  58 static const uint64_t constant_512[80] = {
  59     0x428a2f98d728ae22ULL, 0x7137449123ef65cdULL,
  60     0xb5c0fbcfec4d3b2fULL, 0xe9b5dba58189dbbcULL,
  61     0x3956c25bf348b538ULL, 0x59f111f1b605d019ULL,
  62     0x923f82a4af194f9bULL, 0xab1c5ed5da6d8118ULL,
  63     0xd807aa98a3030242ULL, 0x12835b0145706fbeULL,
  64     0x243185be4ee4b28cULL, 0x550c7dc3d5ffb4e2ULL,
  65     0x72be5d74f27b896fULL, 0x80deb1fe3b1696b1ULL,
  66     0x9bdc06a725c71235ULL, 0xc19bf174cf692694ULL,
  67     0xe49b69c19ef14ad2ULL, 0xefbe4786384f25e3ULL,
  68     0x0fc19dc68b8cd5b5ULL, 0x240ca1cc77ac9c65ULL,
  69     0x2de92c6f592b0275ULL, 0x4a7484aa6ea6e483ULL,
  70     0x5cb0a9dcbd41fbd4ULL, 0x76f988da831153b5ULL,
  71     0x983e5152ee66dfabULL, 0xa831c66d2db43210ULL,
  72     0xb00327c898fb213fULL, 0xbf597fc7beef0ee4ULL,
  73     0xc6e00bf33da88fc2ULL, 0xd5a79147930aa725ULL,
  74     0x06ca6351e003826fULL, 0x142929670a0e6e70ULL,
  75     0x27b70a8546d22ffcULL, 0x2e1b21385c26c926ULL,
  76     0x4d2c6dfc5ac42aedULL, 0x53380d139d95b3dfULL,
  77     0x650a73548baf63deULL, 0x766a0abb3c77b2a8ULL,
  78     0x81c2c92e47edaee6ULL, 0x92722c851482353bULL,
  79     0xa2bfe8a14cf10364ULL, 0xa81a664bbc423001ULL,
  80     0xc24b8b70d0f89791ULL, 0xc76c51a30654be30ULL,
  81     0xd192e819d6ef5218ULL, 0xd69906245565a910ULL,
  82     0xf40e35855771202aULL, 0x106aa07032bbd1b8ULL,
  83     0x19a4c116b8d2d0c8ULL, 0x1e376c085141ab53ULL,
  84     0x2748774cdf8eeb99ULL, 0x34b0bcb5e19b48a8ULL,
  85     0x391c0cb3c5c95a63ULL, 0x4ed8aa4ae3418acbULL,
  86     0x5b9cca4f7763e373ULL, 0x682e6ff3d6b2b8a3ULL,
  87     0x748f82ee5defb2fcULL, 0x78a5636f43172f60ULL,
  88     0x84c87814a1f0ab72ULL, 0x8cc702081a6439ecULL,
  89     0x90befffa23631e28ULL, 0xa4506cebde82bde9ULL,
  90     0xbef9a3f7b2c67915ULL, 0xc67178f2e372532bULL,
  91     0xca273eceea26619cULL, 0xd186b8c721c0c207ULL,
  92     0xeada7dd6cde0eb1eULL, 0xf57d4f7fee6ed178ULL,
  93     0x06f067aa72176fbaULL, 0x0a637dc5a2c898a6ULL,
  94     0x113f9804bef90daeULL, 0x1b710b35131c471bULL,
  95     0x28db77f523047d84ULL, 0x32caab7b40c72493ULL,
  96     0x3c9ebe0a15c9bebcULL, 0x431d67c49c100d4cULL,
  97     0x4cc5d4becb3e42b6ULL, 0x597f299cfc657e2aULL,
  98     0x5fcb6fab3ad6faecULL, 0x6c44198c4a475817ULL
  99 };
 100
 101 void
 102 SHA512_Init (SHA512_CTX *m)
 103 {
 104     m->sz[0] = 0;
 105     m->sz[1] = 0;
 106     A = 0x6a09e667f3bcc908ULL;
 107     B = 0xbb67ae8584caa73bULL;
 108     C = 0x3c6ef372fe94f82bULL;
 109     D = 0xa54ff53a5f1d36f1ULL;
 110     E = 0x510e527fade682d1ULL;
 111     F = 0x9b05688c2b3e6c1fULL;
 112     G = 0x1f83d9abfb41bd6bULL;
 113     H = 0x5be0cd19137e2179ULL;
 114 }
 115
 116 static void
 117 calc (SHA512_CTX *m, uint64_t *in)
 118 {
 119     uint64_t AA, BB, CC, DD, EE, FF, GG, HH;
 120     uint64_t data[80];
 121     int i;
 122
 123     AA = A;
 124     BB = B;
 125     CC = C;
 126     DD = D;
 127     EE = E;
 128     FF = F;
 129     GG = G;
 130     HH = H;
 131
 132     for (i = 0; i < 16; ++i)
 133         data[i] = in[i];
 134     for (i = 16; i < 80; ++i)
 135         data[i] = sigma1(data[i-2]) + data[i-7] +
 136             sigma0(data[i-15]) + data[i - 16];
 137
 138     for (i = 0; i < 80; i++) {
 139         uint64_t T1, T2;
 140
 141         T1 = HH + Sigma1(EE) + Ch(EE, FF, GG) + constant_512[i] + data[i];
 142         T2 = Sigma0(AA) + Maj(AA,BB,CC);
 143
 144         HH = GG;
 145         GG = FF;
 146         FF = EE;
 147         EE = DD + T1;
 148         DD = CC;
 149         CC = BB;
 150         BB = AA;
 151         AA = T1 + T2;
 152     }
 153
 154     A += AA;
 155     B += BB;
 156     C += CC;
 157     D += DD;
 158     E += EE;
 159     F += FF;
 160     G += GG;
 161     H += HH;
 162 }
 163
 164 /*
 165  * From `Performance analysis of MD5' by Joseph D. Touch <touch@isi.edu>
 166  */
 167
 168 #if !defined(WORDS_BIGENDIAN) || defined(_CRAY)
 169 static inline uint64_t
 170 swap_uint64_t (uint64_t t)
 171 {
 172     uint64_t temp;
 173
 174     temp   = cshift64(t, 32);
 175     temp = ((temp & 0xff00ff00ff00ff00ULL) >> 8) |
 176            ((temp & 0x00ff00ff00ff00ffULL) << 8);
 177     return ((temp & 0xffff0000ffff0000ULL) >> 16) |
 178            ((temp & 0x0000ffff0000ffffULL) << 16);
 179 }
 180
 181 struct x64{
 182     uint64_t a;
 183     uint64_t b;
 184 };
 185 #endif
 186
 187 void
 188 SHA512_Update (SHA512_CTX *m, const void *v, size_t len)
 189 {
 190     const unsigned char *p = v;
 191     size_t old_sz = m->sz[0];
 192     size_t offset;
 193
 194     m->sz[0] += len * 8;
 195     if (m->sz[0] < old_sz)
 196         ++m->sz[1];
 197     offset = (old_sz / 8) % 128;
 198     while(len > 0){
 199         size_t l = min(len, 128 - offset);
 200         memcpy(m->save + offset, p, l);
 201         offset += l;
 202         p += l;
 203         len -= l;
 204         if(offset == 128){
 205 #if !defined(WORDS_BIGENDIAN) || defined(_CRAY)
 206             int i;
 207             uint64_t current[16];
 208             struct x64 *us = (struct x64*)m->save;
 209             for(i = 0; i < 8; i++){
 210                 current[2*i+0] = swap_uint64_t(us[i].a);
 211                 current[2*i+1] = swap_uint64_t(us[i].b);
 212             }
 213             calc(m, current);
 214 #else
 215             calc(m, (uint64_t*)m->save);
 216 #endif
 217             offset = 0;
 218         }
 219     }
 220 }
 221
 222 void
 223 SHA512_Final (void *res, SHA512_CTX *m)
 224 {
 225     unsigned char zeros[128 + 16];
 226     unsigned offset = (m->sz[0] / 8) % 128;
 227     unsigned int dstart = (240 - offset - 1) % 128 + 1;
 228
 229     *zeros = 0x80;
 230     memset (zeros + 1, 0, sizeof(zeros) - 1);
 231     zeros[dstart+15] = (m->sz[0] >> 0) & 0xff;
 232     zeros[dstart+14] = (m->sz[0] >> 8) & 0xff;
 233     zeros[dstart+13] = (m->sz[0] >> 16) & 0xff;
 234     zeros[dstart+12] = (m->sz[0] >> 24) & 0xff;
 235     zeros[dstart+11] = (m->sz[0] >> 32) & 0xff;
 236     zeros[dstart+10] = (m->sz[0] >> 40) & 0xff;
 237     zeros[dstart+9]  = (m->sz[0] >> 48) & 0xff;
 238     zeros[dstart+8]  = (m->sz[0] >> 56) & 0xff;
 239
 240     zeros[dstart+7] = (m->sz[1] >> 0) & 0xff;
 241     zeros[dstart+6] = (m->sz[1] >> 8) & 0xff;
 242     zeros[dstart+5] = (m->sz[1] >> 16) & 0xff;
 243     zeros[dstart+4] = (m->sz[1] >> 24) & 0xff;
 244     zeros[dstart+3] = (m->sz[1] >> 32) & 0xff;
 245     zeros[dstart+2] = (m->sz[1] >> 40) & 0xff;
 246     zeros[dstart+1] = (m->sz[1] >> 48) & 0xff;
 247     zeros[dstart+0] = (m->sz[1] >> 56) & 0xff;
 248     SHA512_Update (m, zeros, dstart + 16);
 249     {
 250         int i;
 251         unsigned char *r = (unsigned char*)res;
 252
 253         for (i = 0; i < 8; ++i) {
 254             r[8*i+7] = m->counter[i] & 0xFF;
 255             r[8*i+6] = (m->counter[i] >> 8) & 0xFF;
 256             r[8*i+5] = (m->counter[i] >> 16) & 0xFF;
 257             r[8*i+4] = (m->counter[i] >> 24) & 0xFF;
 258             r[8*i+3] = (m->counter[i] >> 32) & 0XFF;
 259             r[8*i+2] = (m->counter[i] >> 40) & 0xFF;
 260             r[8*i+1] = (m->counter[i] >> 48) & 0xFF;
 261             r[8*i]   = (m->counter[i] >> 56) & 0xFF;
 262         }
 263     }
 264 }
 265
 266 void
 267 SHA384_Init(SHA384_CTX *m)
 268 {
 269     m->sz[0] = 0;
 270     m->sz[1] = 0;
 271     A = 0xcbbb9d5dc1059ed8ULL;
 272     B = 0x629a292a367cd507ULL;
 273     C = 0x9159015a3070dd17ULL;
 274     D = 0x152fecd8f70e5939ULL;
 275     E = 0x67332667ffc00b31ULL;
 276     F = 0x8eb44a8768581511ULL;
 277     G = 0xdb0c2e0d64f98fa7ULL;
 278     H = 0x47b5481dbefa4fa4ULL;
 279 }
 280
 281 void
 282 SHA384_Update (SHA384_CTX *m, const void *v, size_t len)
 283 {
 284     SHA512_Update(m, v, len);
 285 }
 286
 287 void
 288 SHA384_Final (void *res, SHA384_CTX *m)
 289 {
 290     unsigned char data[SHA512_DIGEST_LENGTH];
 291     SHA512_Final(data, m);
 292     memcpy(res, data, SHA384_DIGEST_LENGTH);
 293 }
 294