avb_sha512.c 11 KB

123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321322323324325326327328329330331332333334335336337338339340341342343344345346347348349350351352353354355356357358359360361
  1. // SPDX-License-Identifier: BSD-3-Clause
  2. /*
  3. * Copyright (C) 2005, 2007 Olivier Gay <olivier.gay@a3.epfl.ch>
  4. * All rights reserved.
  5. *
  6. * FIPS 180-2 SHA-224/256/384/512 implementation
  7. * Last update: 02/02/2007
  8. * Issue date: 04/30/2005
  9. */
  10. #include "avb_sha.h"
  11. #define SHFR(x, n) (x >> n)
  12. #define ROTR(x, n) ((x >> n) | (x << ((sizeof(x) << 3) - n)))
  13. #define ROTL(x, n) ((x << n) | (x >> ((sizeof(x) << 3) - n)))
  14. #define CH(x, y, z) ((x & y) ^ (~x & z))
  15. #define MAJ(x, y, z) ((x & y) ^ (x & z) ^ (y & z))
  16. #define SHA512_F1(x) (ROTR(x, 28) ^ ROTR(x, 34) ^ ROTR(x, 39))
  17. #define SHA512_F2(x) (ROTR(x, 14) ^ ROTR(x, 18) ^ ROTR(x, 41))
  18. #define SHA512_F3(x) (ROTR(x, 1) ^ ROTR(x, 8) ^ SHFR(x, 7))
  19. #define SHA512_F4(x) (ROTR(x, 19) ^ ROTR(x, 61) ^ SHFR(x, 6))
  20. #define UNPACK32(x, str) \
  21. { \
  22. *((str) + 3) = (uint8_t)((x)); \
  23. *((str) + 2) = (uint8_t)((x) >> 8); \
  24. *((str) + 1) = (uint8_t)((x) >> 16); \
  25. *((str) + 0) = (uint8_t)((x) >> 24); \
  26. }
  27. #define UNPACK64(x, str) \
  28. { \
  29. *((str) + 7) = (uint8_t)x; \
  30. *((str) + 6) = (uint8_t)((uint64_t)x >> 8); \
  31. *((str) + 5) = (uint8_t)((uint64_t)x >> 16); \
  32. *((str) + 4) = (uint8_t)((uint64_t)x >> 24); \
  33. *((str) + 3) = (uint8_t)((uint64_t)x >> 32); \
  34. *((str) + 2) = (uint8_t)((uint64_t)x >> 40); \
  35. *((str) + 1) = (uint8_t)((uint64_t)x >> 48); \
  36. *((str) + 0) = (uint8_t)((uint64_t)x >> 56); \
  37. }
  38. #define PACK64(str, x) \
  39. { \
  40. *(x) = \
  41. ((uint64_t) * ((str) + 7)) | ((uint64_t) * ((str) + 6) << 8) | \
  42. ((uint64_t) * ((str) + 5) << 16) | ((uint64_t) * ((str) + 4) << 24) | \
  43. ((uint64_t) * ((str) + 3) << 32) | ((uint64_t) * ((str) + 2) << 40) | \
  44. ((uint64_t) * ((str) + 1) << 48) | ((uint64_t) * ((str) + 0) << 56); \
  45. }
  46. /* Macros used for loops unrolling */
  47. #define SHA512_SCR(i) \
  48. { w[i] = SHA512_F4(w[i - 2]) + w[i - 7] + SHA512_F3(w[i - 15]) + w[i - 16]; }
  49. #define SHA512_EXP(a, b, c, d, e, f, g, h, j) \
  50. { \
  51. t1 = wv[h] + SHA512_F2(wv[e]) + CH(wv[e], wv[f], wv[g]) + sha512_k[j] + \
  52. w[j]; \
  53. t2 = SHA512_F1(wv[a]) + MAJ(wv[a], wv[b], wv[c]); \
  54. wv[d] += t1; \
  55. wv[h] = t1 + t2; \
  56. }
  57. static const uint64_t sha512_h0[8] = {0x6a09e667f3bcc908ULL,
  58. 0xbb67ae8584caa73bULL,
  59. 0x3c6ef372fe94f82bULL,
  60. 0xa54ff53a5f1d36f1ULL,
  61. 0x510e527fade682d1ULL,
  62. 0x9b05688c2b3e6c1fULL,
  63. 0x1f83d9abfb41bd6bULL,
  64. 0x5be0cd19137e2179ULL};
  65. static const uint64_t sha512_k[80] = {
  66. 0x428a2f98d728ae22ULL, 0x7137449123ef65cdULL, 0xb5c0fbcfec4d3b2fULL,
  67. 0xe9b5dba58189dbbcULL, 0x3956c25bf348b538ULL, 0x59f111f1b605d019ULL,
  68. 0x923f82a4af194f9bULL, 0xab1c5ed5da6d8118ULL, 0xd807aa98a3030242ULL,
  69. 0x12835b0145706fbeULL, 0x243185be4ee4b28cULL, 0x550c7dc3d5ffb4e2ULL,
  70. 0x72be5d74f27b896fULL, 0x80deb1fe3b1696b1ULL, 0x9bdc06a725c71235ULL,
  71. 0xc19bf174cf692694ULL, 0xe49b69c19ef14ad2ULL, 0xefbe4786384f25e3ULL,
  72. 0x0fc19dc68b8cd5b5ULL, 0x240ca1cc77ac9c65ULL, 0x2de92c6f592b0275ULL,
  73. 0x4a7484aa6ea6e483ULL, 0x5cb0a9dcbd41fbd4ULL, 0x76f988da831153b5ULL,
  74. 0x983e5152ee66dfabULL, 0xa831c66d2db43210ULL, 0xb00327c898fb213fULL,
  75. 0xbf597fc7beef0ee4ULL, 0xc6e00bf33da88fc2ULL, 0xd5a79147930aa725ULL,
  76. 0x06ca6351e003826fULL, 0x142929670a0e6e70ULL, 0x27b70a8546d22ffcULL,
  77. 0x2e1b21385c26c926ULL, 0x4d2c6dfc5ac42aedULL, 0x53380d139d95b3dfULL,
  78. 0x650a73548baf63deULL, 0x766a0abb3c77b2a8ULL, 0x81c2c92e47edaee6ULL,
  79. 0x92722c851482353bULL, 0xa2bfe8a14cf10364ULL, 0xa81a664bbc423001ULL,
  80. 0xc24b8b70d0f89791ULL, 0xc76c51a30654be30ULL, 0xd192e819d6ef5218ULL,
  81. 0xd69906245565a910ULL, 0xf40e35855771202aULL, 0x106aa07032bbd1b8ULL,
  82. 0x19a4c116b8d2d0c8ULL, 0x1e376c085141ab53ULL, 0x2748774cdf8eeb99ULL,
  83. 0x34b0bcb5e19b48a8ULL, 0x391c0cb3c5c95a63ULL, 0x4ed8aa4ae3418acbULL,
  84. 0x5b9cca4f7763e373ULL, 0x682e6ff3d6b2b8a3ULL, 0x748f82ee5defb2fcULL,
  85. 0x78a5636f43172f60ULL, 0x84c87814a1f0ab72ULL, 0x8cc702081a6439ecULL,
  86. 0x90befffa23631e28ULL, 0xa4506cebde82bde9ULL, 0xbef9a3f7b2c67915ULL,
  87. 0xc67178f2e372532bULL, 0xca273eceea26619cULL, 0xd186b8c721c0c207ULL,
  88. 0xeada7dd6cde0eb1eULL, 0xf57d4f7fee6ed178ULL, 0x06f067aa72176fbaULL,
  89. 0x0a637dc5a2c898a6ULL, 0x113f9804bef90daeULL, 0x1b710b35131c471bULL,
  90. 0x28db77f523047d84ULL, 0x32caab7b40c72493ULL, 0x3c9ebe0a15c9bebcULL,
  91. 0x431d67c49c100d4cULL, 0x4cc5d4becb3e42b6ULL, 0x597f299cfc657e2aULL,
  92. 0x5fcb6fab3ad6faecULL, 0x6c44198c4a475817ULL};
  93. /* SHA-512 implementation */
  94. void avb_sha512_init(AvbSHA512Ctx* ctx) {
  95. #ifdef UNROLL_LOOPS_SHA512
  96. ctx->h[0] = sha512_h0[0];
  97. ctx->h[1] = sha512_h0[1];
  98. ctx->h[2] = sha512_h0[2];
  99. ctx->h[3] = sha512_h0[3];
  100. ctx->h[4] = sha512_h0[4];
  101. ctx->h[5] = sha512_h0[5];
  102. ctx->h[6] = sha512_h0[6];
  103. ctx->h[7] = sha512_h0[7];
  104. #else
  105. int i;
  106. for (i = 0; i < 8; i++)
  107. ctx->h[i] = sha512_h0[i];
  108. #endif /* UNROLL_LOOPS_SHA512 */
  109. ctx->len = 0;
  110. ctx->tot_len = 0;
  111. }
  112. static void SHA512_transform(AvbSHA512Ctx* ctx,
  113. const uint8_t* message,
  114. size_t block_nb) {
  115. uint64_t w[80];
  116. uint64_t wv[8];
  117. uint64_t t1, t2;
  118. const uint8_t* sub_block;
  119. size_t i, j;
  120. for (i = 0; i < block_nb; i++) {
  121. sub_block = message + (i << 7);
  122. #ifdef UNROLL_LOOPS_SHA512
  123. PACK64(&sub_block[0], &w[0]);
  124. PACK64(&sub_block[8], &w[1]);
  125. PACK64(&sub_block[16], &w[2]);
  126. PACK64(&sub_block[24], &w[3]);
  127. PACK64(&sub_block[32], &w[4]);
  128. PACK64(&sub_block[40], &w[5]);
  129. PACK64(&sub_block[48], &w[6]);
  130. PACK64(&sub_block[56], &w[7]);
  131. PACK64(&sub_block[64], &w[8]);
  132. PACK64(&sub_block[72], &w[9]);
  133. PACK64(&sub_block[80], &w[10]);
  134. PACK64(&sub_block[88], &w[11]);
  135. PACK64(&sub_block[96], &w[12]);
  136. PACK64(&sub_block[104], &w[13]);
  137. PACK64(&sub_block[112], &w[14]);
  138. PACK64(&sub_block[120], &w[15]);
  139. SHA512_SCR(16);
  140. SHA512_SCR(17);
  141. SHA512_SCR(18);
  142. SHA512_SCR(19);
  143. SHA512_SCR(20);
  144. SHA512_SCR(21);
  145. SHA512_SCR(22);
  146. SHA512_SCR(23);
  147. SHA512_SCR(24);
  148. SHA512_SCR(25);
  149. SHA512_SCR(26);
  150. SHA512_SCR(27);
  151. SHA512_SCR(28);
  152. SHA512_SCR(29);
  153. SHA512_SCR(30);
  154. SHA512_SCR(31);
  155. SHA512_SCR(32);
  156. SHA512_SCR(33);
  157. SHA512_SCR(34);
  158. SHA512_SCR(35);
  159. SHA512_SCR(36);
  160. SHA512_SCR(37);
  161. SHA512_SCR(38);
  162. SHA512_SCR(39);
  163. SHA512_SCR(40);
  164. SHA512_SCR(41);
  165. SHA512_SCR(42);
  166. SHA512_SCR(43);
  167. SHA512_SCR(44);
  168. SHA512_SCR(45);
  169. SHA512_SCR(46);
  170. SHA512_SCR(47);
  171. SHA512_SCR(48);
  172. SHA512_SCR(49);
  173. SHA512_SCR(50);
  174. SHA512_SCR(51);
  175. SHA512_SCR(52);
  176. SHA512_SCR(53);
  177. SHA512_SCR(54);
  178. SHA512_SCR(55);
  179. SHA512_SCR(56);
  180. SHA512_SCR(57);
  181. SHA512_SCR(58);
  182. SHA512_SCR(59);
  183. SHA512_SCR(60);
  184. SHA512_SCR(61);
  185. SHA512_SCR(62);
  186. SHA512_SCR(63);
  187. SHA512_SCR(64);
  188. SHA512_SCR(65);
  189. SHA512_SCR(66);
  190. SHA512_SCR(67);
  191. SHA512_SCR(68);
  192. SHA512_SCR(69);
  193. SHA512_SCR(70);
  194. SHA512_SCR(71);
  195. SHA512_SCR(72);
  196. SHA512_SCR(73);
  197. SHA512_SCR(74);
  198. SHA512_SCR(75);
  199. SHA512_SCR(76);
  200. SHA512_SCR(77);
  201. SHA512_SCR(78);
  202. SHA512_SCR(79);
  203. wv[0] = ctx->h[0];
  204. wv[1] = ctx->h[1];
  205. wv[2] = ctx->h[2];
  206. wv[3] = ctx->h[3];
  207. wv[4] = ctx->h[4];
  208. wv[5] = ctx->h[5];
  209. wv[6] = ctx->h[6];
  210. wv[7] = ctx->h[7];
  211. j = 0;
  212. do {
  213. SHA512_EXP(0, 1, 2, 3, 4, 5, 6, 7, j);
  214. j++;
  215. SHA512_EXP(7, 0, 1, 2, 3, 4, 5, 6, j);
  216. j++;
  217. SHA512_EXP(6, 7, 0, 1, 2, 3, 4, 5, j);
  218. j++;
  219. SHA512_EXP(5, 6, 7, 0, 1, 2, 3, 4, j);
  220. j++;
  221. SHA512_EXP(4, 5, 6, 7, 0, 1, 2, 3, j);
  222. j++;
  223. SHA512_EXP(3, 4, 5, 6, 7, 0, 1, 2, j);
  224. j++;
  225. SHA512_EXP(2, 3, 4, 5, 6, 7, 0, 1, j);
  226. j++;
  227. SHA512_EXP(1, 2, 3, 4, 5, 6, 7, 0, j);
  228. j++;
  229. } while (j < 80);
  230. ctx->h[0] += wv[0];
  231. ctx->h[1] += wv[1];
  232. ctx->h[2] += wv[2];
  233. ctx->h[3] += wv[3];
  234. ctx->h[4] += wv[4];
  235. ctx->h[5] += wv[5];
  236. ctx->h[6] += wv[6];
  237. ctx->h[7] += wv[7];
  238. #else
  239. for (j = 0; j < 16; j++) {
  240. PACK64(&sub_block[j << 3], &w[j]);
  241. }
  242. for (j = 16; j < 80; j++) {
  243. SHA512_SCR(j);
  244. }
  245. for (j = 0; j < 8; j++) {
  246. wv[j] = ctx->h[j];
  247. }
  248. for (j = 0; j < 80; j++) {
  249. t1 = wv[7] + SHA512_F2(wv[4]) + CH(wv[4], wv[5], wv[6]) + sha512_k[j] +
  250. w[j];
  251. t2 = SHA512_F1(wv[0]) + MAJ(wv[0], wv[1], wv[2]);
  252. wv[7] = wv[6];
  253. wv[6] = wv[5];
  254. wv[5] = wv[4];
  255. wv[4] = wv[3] + t1;
  256. wv[3] = wv[2];
  257. wv[2] = wv[1];
  258. wv[1] = wv[0];
  259. wv[0] = t1 + t2;
  260. }
  261. for (j = 0; j < 8; j++)
  262. ctx->h[j] += wv[j];
  263. #endif /* UNROLL_LOOPS_SHA512 */
  264. }
  265. }
  266. void avb_sha512_update(AvbSHA512Ctx* ctx, const uint8_t* data, size_t len) {
  267. size_t block_nb;
  268. size_t new_len, rem_len, tmp_len;
  269. const uint8_t* shifted_data;
  270. tmp_len = AVB_SHA512_BLOCK_SIZE - ctx->len;
  271. rem_len = len < tmp_len ? len : tmp_len;
  272. avb_memcpy(&ctx->block[ctx->len], data, rem_len);
  273. if (ctx->len + len < AVB_SHA512_BLOCK_SIZE) {
  274. ctx->len += len;
  275. return;
  276. }
  277. new_len = len - rem_len;
  278. block_nb = new_len / AVB_SHA512_BLOCK_SIZE;
  279. shifted_data = data + rem_len;
  280. SHA512_transform(ctx, ctx->block, 1);
  281. SHA512_transform(ctx, shifted_data, block_nb);
  282. rem_len = new_len % AVB_SHA512_BLOCK_SIZE;
  283. avb_memcpy(ctx->block, &shifted_data[block_nb << 7], rem_len);
  284. ctx->len = rem_len;
  285. ctx->tot_len += (block_nb + 1) << 7;
  286. }
  287. uint8_t* avb_sha512_final(AvbSHA512Ctx* ctx) {
  288. size_t block_nb;
  289. size_t pm_len;
  290. uint64_t len_b;
  291. #ifndef UNROLL_LOOPS_SHA512
  292. size_t i;
  293. #endif
  294. block_nb =
  295. 1 + ((AVB_SHA512_BLOCK_SIZE - 17) < (ctx->len % AVB_SHA512_BLOCK_SIZE));
  296. len_b = (ctx->tot_len + ctx->len) << 3;
  297. pm_len = block_nb << 7;
  298. avb_memset(ctx->block + ctx->len, 0, pm_len - ctx->len);
  299. ctx->block[ctx->len] = 0x80;
  300. UNPACK64(len_b, ctx->block + pm_len - 8);
  301. SHA512_transform(ctx, ctx->block, block_nb);
  302. #ifdef UNROLL_LOOPS_SHA512
  303. UNPACK64(ctx->h[0], &ctx->buf[0]);
  304. UNPACK64(ctx->h[1], &ctx->buf[8]);
  305. UNPACK64(ctx->h[2], &ctx->buf[16]);
  306. UNPACK64(ctx->h[3], &ctx->buf[24]);
  307. UNPACK64(ctx->h[4], &ctx->buf[32]);
  308. UNPACK64(ctx->h[5], &ctx->buf[40]);
  309. UNPACK64(ctx->h[6], &ctx->buf[48]);
  310. UNPACK64(ctx->h[7], &ctx->buf[56]);
  311. #else
  312. for (i = 0; i < 8; i++)
  313. UNPACK64(ctx->h[i], &ctx->buf[i << 3]);
  314. #endif /* UNROLL_LOOPS_SHA512 */
  315. return ctx->buf;
  316. }