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sha512.c
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1 /*
2  * Copyright (C) 2007 Michael Niedermayer <michaelni@gmx.at>
3  * Copyright (C) 2009 Konstantin Shishkov
4  * Copyright (C) 2013 James Almer
5  * based on BSD-licensed SHA-2 code by Aaron D. Gifford
6  *
7  * This file is part of FFmpeg.
8  *
9  * FFmpeg is free software; you can redistribute it and/or
10  * modify it under the terms of the GNU Lesser General Public
11  * License as published by the Free Software Foundation; either
12  * version 2.1 of the License, or (at your option) any later version.
13  *
14  * FFmpeg is distributed in the hope that it will be useful,
15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17  * Lesser General Public License for more details.
18  *
19  * You should have received a copy of the GNU Lesser General Public
20  * License along with FFmpeg; if not, write to the Free Software
21  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
22  */
23 
24 #include <string.h>
25 
26 #include "attributes.h"
27 #include "avutil.h"
28 #include "bswap.h"
29 #include "sha512.h"
30 #include "intreadwrite.h"
31 #include "mem.h"
32 
33 /** hash context */
34 typedef struct AVSHA512 {
35  uint8_t digest_len; ///< digest length in 64-bit words
36  uint64_t count; ///< number of bytes in buffer
37  uint8_t buffer[128]; ///< 1024-bit buffer of input values used in hash updating
38  uint64_t state[8]; ///< current hash value
39 } AVSHA512;
40 
41 const int av_sha512_size = sizeof(AVSHA512);
42 
43 struct AVSHA512 *av_sha512_alloc(void)
44 {
45  return av_mallocz(sizeof(struct AVSHA512));
46 }
47 
48 static const uint64_t K512[80] = {
49  UINT64_C(0x428a2f98d728ae22), UINT64_C(0x7137449123ef65cd),
50  UINT64_C(0xb5c0fbcfec4d3b2f), UINT64_C(0xe9b5dba58189dbbc),
51  UINT64_C(0x3956c25bf348b538), UINT64_C(0x59f111f1b605d019),
52  UINT64_C(0x923f82a4af194f9b), UINT64_C(0xab1c5ed5da6d8118),
53  UINT64_C(0xd807aa98a3030242), UINT64_C(0x12835b0145706fbe),
54  UINT64_C(0x243185be4ee4b28c), UINT64_C(0x550c7dc3d5ffb4e2),
55  UINT64_C(0x72be5d74f27b896f), UINT64_C(0x80deb1fe3b1696b1),
56  UINT64_C(0x9bdc06a725c71235), UINT64_C(0xc19bf174cf692694),
57  UINT64_C(0xe49b69c19ef14ad2), UINT64_C(0xefbe4786384f25e3),
58  UINT64_C(0x0fc19dc68b8cd5b5), UINT64_C(0x240ca1cc77ac9c65),
59  UINT64_C(0x2de92c6f592b0275), UINT64_C(0x4a7484aa6ea6e483),
60  UINT64_C(0x5cb0a9dcbd41fbd4), UINT64_C(0x76f988da831153b5),
61  UINT64_C(0x983e5152ee66dfab), UINT64_C(0xa831c66d2db43210),
62  UINT64_C(0xb00327c898fb213f), UINT64_C(0xbf597fc7beef0ee4),
63  UINT64_C(0xc6e00bf33da88fc2), UINT64_C(0xd5a79147930aa725),
64  UINT64_C(0x06ca6351e003826f), UINT64_C(0x142929670a0e6e70),
65  UINT64_C(0x27b70a8546d22ffc), UINT64_C(0x2e1b21385c26c926),
66  UINT64_C(0x4d2c6dfc5ac42aed), UINT64_C(0x53380d139d95b3df),
67  UINT64_C(0x650a73548baf63de), UINT64_C(0x766a0abb3c77b2a8),
68  UINT64_C(0x81c2c92e47edaee6), UINT64_C(0x92722c851482353b),
69  UINT64_C(0xa2bfe8a14cf10364), UINT64_C(0xa81a664bbc423001),
70  UINT64_C(0xc24b8b70d0f89791), UINT64_C(0xc76c51a30654be30),
71  UINT64_C(0xd192e819d6ef5218), UINT64_C(0xd69906245565a910),
72  UINT64_C(0xf40e35855771202a), UINT64_C(0x106aa07032bbd1b8),
73  UINT64_C(0x19a4c116b8d2d0c8), UINT64_C(0x1e376c085141ab53),
74  UINT64_C(0x2748774cdf8eeb99), UINT64_C(0x34b0bcb5e19b48a8),
75  UINT64_C(0x391c0cb3c5c95a63), UINT64_C(0x4ed8aa4ae3418acb),
76  UINT64_C(0x5b9cca4f7763e373), UINT64_C(0x682e6ff3d6b2b8a3),
77  UINT64_C(0x748f82ee5defb2fc), UINT64_C(0x78a5636f43172f60),
78  UINT64_C(0x84c87814a1f0ab72), UINT64_C(0x8cc702081a6439ec),
79  UINT64_C(0x90befffa23631e28), UINT64_C(0xa4506cebde82bde9),
80  UINT64_C(0xbef9a3f7b2c67915), UINT64_C(0xc67178f2e372532b),
81  UINT64_C(0xca273eceea26619c), UINT64_C(0xd186b8c721c0c207),
82  UINT64_C(0xeada7dd6cde0eb1e), UINT64_C(0xf57d4f7fee6ed178),
83  UINT64_C(0x06f067aa72176fba), UINT64_C(0x0a637dc5a2c898a6),
84  UINT64_C(0x113f9804bef90dae), UINT64_C(0x1b710b35131c471b),
85  UINT64_C(0x28db77f523047d84), UINT64_C(0x32caab7b40c72493),
86  UINT64_C(0x3c9ebe0a15c9bebc), UINT64_C(0x431d67c49c100d4c),
87  UINT64_C(0x4cc5d4becb3e42b6), UINT64_C(0x597f299cfc657e2a),
88  UINT64_C(0x5fcb6fab3ad6faec), UINT64_C(0x6c44198c4a475817),
89 };
90 
91 #define ror(value, bits) (((value) >> (bits)) | ((value) << (64 - (bits))))
92 
93 #define Ch(x,y,z) (((x) & ((y) ^ (z))) ^ (z))
94 #define Maj(z,y,x) ((((x) | (y)) & (z)) | ((x) & (y)))
95 
96 #define Sigma0_512(x) (ror((x), 28) ^ ror((x), 34) ^ ror((x), 39))
97 #define Sigma1_512(x) (ror((x), 14) ^ ror((x), 18) ^ ror((x), 41))
98 #define sigma0_512(x) (ror((x), 1) ^ ror((x), 8) ^ ((x) >> 7))
99 #define sigma1_512(x) (ror((x), 19) ^ ror((x), 61) ^ ((x) >> 6))
100 
101 #define blk0(i) (block[i] = AV_RB64(buffer + 8 * (i)))
102 #define blk(i) (block[i] = block[i - 16] + sigma0_512(block[i - 15]) + \
103  sigma1_512(block[i - 2]) + block[i - 7])
104 
105 #define ROUND512(a,b,c,d,e,f,g,h) \
106  T1 += (h) + Sigma1_512(e) + Ch((e), (f), (g)) + K512[i]; \
107  (d) += T1; \
108  (h) = T1 + Sigma0_512(a) + Maj((a), (b), (c)); \
109  i++
110 
111 #define ROUND512_0_TO_15(a,b,c,d,e,f,g,h) \
112  T1 = blk0(i); \
113  ROUND512(a,b,c,d,e,f,g,h)
114 
115 #define ROUND512_16_TO_80(a,b,c,d,e,f,g,h) \
116  T1 = blk(i); \
117  ROUND512(a,b,c,d,e,f,g,h)
118 
119 static void sha512_transform(uint64_t *state, const uint8_t buffer[128])
120 {
121  uint64_t a, b, c, d, e, f, g, h;
122  uint64_t block[80];
123  uint64_t T1;
124  int i;
125 
126  a = state[0];
127  b = state[1];
128  c = state[2];
129  d = state[3];
130  e = state[4];
131  f = state[5];
132  g = state[6];
133  h = state[7];
134 #if CONFIG_SMALL
135  for (i = 0; i < 80; i++) {
136  uint64_t T2;
137  if (i < 16)
138  T1 = blk0(i);
139  else
140  T1 = blk(i);
141  T1 += h + Sigma1_512(e) + Ch(e, f, g) + K512[i];
142  T2 = Sigma0_512(a) + Maj(a, b, c);
143  h = g;
144  g = f;
145  f = e;
146  e = d + T1;
147  d = c;
148  c = b;
149  b = a;
150  a = T1 + T2;
151  }
152 #else
153 
154 #define R512_0 \
155  ROUND512_0_TO_15(a, b, c, d, e, f, g, h); \
156  ROUND512_0_TO_15(h, a, b, c, d, e, f, g); \
157  ROUND512_0_TO_15(g, h, a, b, c, d, e, f); \
158  ROUND512_0_TO_15(f, g, h, a, b, c, d, e); \
159  ROUND512_0_TO_15(e, f, g, h, a, b, c, d); \
160  ROUND512_0_TO_15(d, e, f, g, h, a, b, c); \
161  ROUND512_0_TO_15(c, d, e, f, g, h, a, b); \
162  ROUND512_0_TO_15(b, c, d, e, f, g, h, a)
163 
164  i = 0;
165  R512_0; R512_0;
166 
167 #define R512_16 \
168  ROUND512_16_TO_80(a, b, c, d, e, f, g, h); \
169  ROUND512_16_TO_80(h, a, b, c, d, e, f, g); \
170  ROUND512_16_TO_80(g, h, a, b, c, d, e, f); \
171  ROUND512_16_TO_80(f, g, h, a, b, c, d, e); \
172  ROUND512_16_TO_80(e, f, g, h, a, b, c, d); \
173  ROUND512_16_TO_80(d, e, f, g, h, a, b, c); \
174  ROUND512_16_TO_80(c, d, e, f, g, h, a, b); \
175  ROUND512_16_TO_80(b, c, d, e, f, g, h, a)
176 
177  R512_16; R512_16; R512_16; R512_16;
178  R512_16; R512_16; R512_16; R512_16;
179 #endif
180  state[0] += a;
181  state[1] += b;
182  state[2] += c;
183  state[3] += d;
184  state[4] += e;
185  state[5] += f;
186  state[6] += g;
187  state[7] += h;
188 }
189 
190 
191 av_cold int av_sha512_init(AVSHA512 *ctx, int bits)
192 {
193  ctx->digest_len = bits >> 6;
194  switch (bits) {
195  case 224: // SHA-512/224
196  ctx->state[0] = UINT64_C(0x8C3D37C819544DA2);
197  ctx->state[1] = UINT64_C(0x73E1996689DCD4D6);
198  ctx->state[2] = UINT64_C(0x1DFAB7AE32FF9C82);
199  ctx->state[3] = UINT64_C(0x679DD514582F9FCF);
200  ctx->state[4] = UINT64_C(0x0F6D2B697BD44DA8);
201  ctx->state[5] = UINT64_C(0x77E36F7304C48942);
202  ctx->state[6] = UINT64_C(0x3F9D85A86A1D36C8);
203  ctx->state[7] = UINT64_C(0x1112E6AD91D692A1);
204  break;
205  case 256: // SHA-512/256
206  ctx->state[0] = UINT64_C(0x22312194FC2BF72C);
207  ctx->state[1] = UINT64_C(0x9F555FA3C84C64C2);
208  ctx->state[2] = UINT64_C(0x2393B86B6F53B151);
209  ctx->state[3] = UINT64_C(0x963877195940EABD);
210  ctx->state[4] = UINT64_C(0x96283EE2A88EFFE3);
211  ctx->state[5] = UINT64_C(0xBE5E1E2553863992);
212  ctx->state[6] = UINT64_C(0x2B0199FC2C85B8AA);
213  ctx->state[7] = UINT64_C(0x0EB72DDC81C52CA2);
214  break;
215  case 384: // SHA-384
216  ctx->state[0] = UINT64_C(0xCBBB9D5DC1059ED8);
217  ctx->state[1] = UINT64_C(0x629A292A367CD507);
218  ctx->state[2] = UINT64_C(0x9159015A3070DD17);
219  ctx->state[3] = UINT64_C(0x152FECD8F70E5939);
220  ctx->state[4] = UINT64_C(0x67332667FFC00B31);
221  ctx->state[5] = UINT64_C(0x8EB44A8768581511);
222  ctx->state[6] = UINT64_C(0xDB0C2E0D64F98FA7);
223  ctx->state[7] = UINT64_C(0x47B5481DBEFA4FA4);
224  break;
225  case 512: // SHA-512
226  ctx->state[0] = UINT64_C(0x6A09E667F3BCC908);
227  ctx->state[1] = UINT64_C(0xBB67AE8584CAA73B);
228  ctx->state[2] = UINT64_C(0x3C6EF372FE94F82B);
229  ctx->state[3] = UINT64_C(0xA54FF53A5F1D36F1);
230  ctx->state[4] = UINT64_C(0x510E527FADE682D1);
231  ctx->state[5] = UINT64_C(0x9B05688C2B3E6C1F);
232  ctx->state[6] = UINT64_C(0x1F83D9ABFB41BD6B);
233  ctx->state[7] = UINT64_C(0x5BE0CD19137E2179);
234  break;
235  default:
236  return -1;
237  }
238  ctx->count = 0;
239  return 0;
240 }
241 
242 void av_sha512_update(AVSHA512* ctx, const uint8_t* data, unsigned int len)
243 {
244  unsigned int i, j;
245 
246  j = ctx->count & 127;
247  ctx->count += len;
248 #if CONFIG_SMALL
249  for (i = 0; i < len; i++) {
250  ctx->buffer[j++] = data[i];
251  if (128 == j) {
252  sha512_transform(ctx->state, ctx->buffer);
253  j = 0;
254  }
255  }
256 #else
257  if ((j + len) > 127) {
258  memcpy(&ctx->buffer[j], data, (i = 128 - j));
259  sha512_transform(ctx->state, ctx->buffer);
260  for (; i + 127 < len; i += 128)
261  sha512_transform(ctx->state, &data[i]);
262  j = 0;
263  } else
264  i = 0;
265  memcpy(&ctx->buffer[j], &data[i], len - i);
266 #endif
267 }
268 
269 void av_sha512_final(AVSHA512* ctx, uint8_t *digest)
270 {
271  uint64_t i = 0;
272  uint64_t finalcount = av_be2ne64(ctx->count << 3);
273 
274  av_sha512_update(ctx, "\200", 1);
275  while ((ctx->count & 127) != 112)
276  av_sha512_update(ctx, "", 1);
277  av_sha512_update(ctx, (uint8_t *)&i, 8);
278  av_sha512_update(ctx, (uint8_t *)&finalcount, 8); /* Should cause a transform() */
279  for (i = 0; i < ctx->digest_len; i++)
280  AV_WB64(digest + i*8, ctx->state[i]);
281  if (ctx->digest_len & 1) /* SHA512/224 is 28 bytes, and is not divisible by 8. */
282  AV_WB32(digest + i*8, ctx->state[i] >> 32);
283 }
284 
285 #ifdef TEST
286 #include <stdio.h>
287 
288 int main(void)
289 {
290  int i, j, k;
291  AVSHA512 ctx;
292  unsigned char digest[64];
293  static const int lengths[4] = { 224, 256, 384, 512 };
294 
295  for (j = 0; j < 4; j++) {
296  if (j < 2) printf("Testing SHA-512/%d\n", lengths[j]);
297  else printf("Testing SHA-%d\n", lengths[j]);
298  for (k = 0; k < 3; k++) {
299  av_sha512_init(&ctx, lengths[j]);
300  if (k == 0)
301  av_sha512_update(&ctx, "abc", 3);
302  else if (k == 1)
303  av_sha512_update(&ctx, "abcdefghbcdefghicdefghijdefghijkefghijklfghijklmghijklmn"
304  "hijklmnoijklmnopjklmnopqklmnopqrlmnopqrsmnopqrstnopqrstu", 112);
305  else
306  for (i = 0; i < 1000*1000; i++)
307  av_sha512_update(&ctx, "a", 1);
308  av_sha512_final(&ctx, digest);
309  for (i = 0; i < lengths[j] >> 3; i++)
310  printf("%02X", digest[i]);
311  putchar('\n');
312  }
313  switch (j) { //test vectors (from FIPS PUB 180-4 Apendix A)
314  case 0:
315  printf("4634270f 707b6a54 daae7530 460842e2 0e37ed26 5ceee9a4 3e8924aa\n"
316  "23fec5bb 94d60b23 30819264 0b0c4533 35d66473 4fe40e72 68674af9\n"
317  "37ab331d 76f0d36d e422bd0e deb22a28 accd487b 7a8453ae 965dd287\n");
318  break;
319  case 1:
320  printf("53048e26 81941ef9 9b2e29b7 6b4c7dab e4c2d0c6 34fc6d46 e0e2f131 07e7af23\n"
321  "3928e184 fb8690f8 40da3988 121d31be 65cb9d3e f83ee614 6feac861 e19b563a\n"
322  "9a59a052 930187a9 7038cae6 92f30708 aa649192 3ef51943 94dc68d5 6c74fb21\n");
323  break;
324  case 2:
325  printf("cb00753f 45a35e8b b5a03d69 9ac65007 272c32ab 0eded163 "
326  "1a8b605a 43ff5bed 8086072b a1e7cc23 58baeca1 34c825a7\n"
327  "09330c33 f71147e8 3d192fc7 82cd1b47 53111b17 3b3b05d2 "
328  "2fa08086 e3b0f712 fcc7c71a 557e2db9 66c3e9fa 91746039\n"
329  "9d0e1809 716474cb 086e834e 310a4a1c ed149e9c 00f24852 "
330  "7972cec5 704c2a5b 07b8b3dc 38ecc4eb ae97ddd8 7f3d8985\n");
331  break;
332  case 3:
333  printf("ddaf35a1 93617aba cc417349 ae204131 12e6fa4e 89a97ea2 0a9eeee6 4b55d39a "
334  "2192992a 274fc1a8 36ba3c23 a3feebbd 454d4423 643ce80e 2a9ac94f a54ca49f\n"
335  "8e959b75 dae313da 8cf4f728 14fc143f 8f7779c6 eb9f7fa1 7299aead b6889018 "
336  "501d289e 4900f7e4 331b99de c4b5433a c7d329ee b6dd2654 5e96e55b 874be909\n"
337  "e718483d 0ce76964 4e2e42c7 bc15b463 8e1f98b1 3b204428 5632a803 afa973eb "
338  "de0ff244 877ea60a 4cb0432c e577c31b eb009c5c 2c49aa2e 4eadb217 ad8cc09b\n");
339  break;
340  }
341  }
342 
343  return 0;
344 }
345 #endif
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