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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 | /* SHA-512 code by Jean-Luc Cooke <jlcooke@certainkey.com> * * Copyright (c) Jean-Luc Cooke <jlcooke@certainkey.com> * Copyright (c) Andrew McDonald <andrew@mcdonald.org.uk> * Copyright (c) 2003 Kyle McMartin <kyle@debian.org> * * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by the * Free Software Foundation; either version 2, or (at your option) any * later version. * */ #include <linux/kernel.h> #include <linux/module.h> #include <linux/mm.h> #include <linux/init.h> #include <linux/crypto.h> #include <asm/scatterlist.h> #include <asm/byteorder.h> #define SHA384_DIGEST_SIZE 48 #define SHA512_DIGEST_SIZE 64 #define SHA384_HMAC_BLOCK_SIZE 96 #define SHA512_HMAC_BLOCK_SIZE 128 struct sha512_ctx { u64 state[8]; u32 count[4]; u8 buf[128]; }; static inline u64 Ch(u64 x, u64 y, u64 z) { return ((x & y) ^ (~x & z)); } static inline u64 Maj(u64 x, u64 y, u64 z) { return ((x & y) ^ (x & z) ^ (y & z)); } static inline u64 RORu64(u64 x, u64 y) { return (x >> y) | (x << (64 - y)); } const u64 sha512_K[80] = { 0x428a2f98d728ae22ULL, 0x7137449123ef65cdULL, 0xb5c0fbcfec4d3b2fULL, 0xe9b5dba58189dbbcULL, 0x3956c25bf348b538ULL, 0x59f111f1b605d019ULL, 0x923f82a4af194f9bULL, 0xab1c5ed5da6d8118ULL, 0xd807aa98a3030242ULL, 0x12835b0145706fbeULL, 0x243185be4ee4b28cULL, 0x550c7dc3d5ffb4e2ULL, 0x72be5d74f27b896fULL, 0x80deb1fe3b1696b1ULL, 0x9bdc06a725c71235ULL, 0xc19bf174cf692694ULL, 0xe49b69c19ef14ad2ULL, 0xefbe4786384f25e3ULL, 0x0fc19dc68b8cd5b5ULL, 0x240ca1cc77ac9c65ULL, 0x2de92c6f592b0275ULL, 0x4a7484aa6ea6e483ULL, 0x5cb0a9dcbd41fbd4ULL, 0x76f988da831153b5ULL, 0x983e5152ee66dfabULL, 0xa831c66d2db43210ULL, 0xb00327c898fb213fULL, 0xbf597fc7beef0ee4ULL, 0xc6e00bf33da88fc2ULL, 0xd5a79147930aa725ULL, 0x06ca6351e003826fULL, 0x142929670a0e6e70ULL, 0x27b70a8546d22ffcULL, 0x2e1b21385c26c926ULL, 0x4d2c6dfc5ac42aedULL, 0x53380d139d95b3dfULL, 0x650a73548baf63deULL, 0x766a0abb3c77b2a8ULL, 0x81c2c92e47edaee6ULL, 0x92722c851482353bULL, 0xa2bfe8a14cf10364ULL, 0xa81a664bbc423001ULL, 0xc24b8b70d0f89791ULL, 0xc76c51a30654be30ULL, 0xd192e819d6ef5218ULL, 0xd69906245565a910ULL, 0xf40e35855771202aULL, 0x106aa07032bbd1b8ULL, 0x19a4c116b8d2d0c8ULL, 0x1e376c085141ab53ULL, 0x2748774cdf8eeb99ULL, 0x34b0bcb5e19b48a8ULL, 0x391c0cb3c5c95a63ULL, 0x4ed8aa4ae3418acbULL, 0x5b9cca4f7763e373ULL, 0x682e6ff3d6b2b8a3ULL, 0x748f82ee5defb2fcULL, 0x78a5636f43172f60ULL, 0x84c87814a1f0ab72ULL, 0x8cc702081a6439ecULL, 0x90befffa23631e28ULL, 0xa4506cebde82bde9ULL, 0xbef9a3f7b2c67915ULL, 0xc67178f2e372532bULL, 0xca273eceea26619cULL, 0xd186b8c721c0c207ULL, 0xeada7dd6cde0eb1eULL, 0xf57d4f7fee6ed178ULL, 0x06f067aa72176fbaULL, 0x0a637dc5a2c898a6ULL, 0x113f9804bef90daeULL, 0x1b710b35131c471bULL, 0x28db77f523047d84ULL, 0x32caab7b40c72493ULL, 0x3c9ebe0a15c9bebcULL, 0x431d67c49c100d4cULL, 0x4cc5d4becb3e42b6ULL, 0x597f299cfc657e2aULL, 0x5fcb6fab3ad6faecULL, 0x6c44198c4a475817ULL, }; #define e0(x) (RORu64(x,28) ^ RORu64(x,34) ^ RORu64(x,39)) #define e1(x) (RORu64(x,14) ^ RORu64(x,18) ^ RORu64(x,41)) #define s0(x) (RORu64(x, 1) ^ RORu64(x, 8) ^ (x >> 7)) #define s1(x) (RORu64(x,19) ^ RORu64(x,61) ^ (x >> 6)) /* H* initial state for SHA-512 */ #define H0 0x6a09e667f3bcc908ULL #define H1 0xbb67ae8584caa73bULL #define H2 0x3c6ef372fe94f82bULL #define H3 0xa54ff53a5f1d36f1ULL #define H4 0x510e527fade682d1ULL #define H5 0x9b05688c2b3e6c1fULL #define H6 0x1f83d9abfb41bd6bULL #define H7 0x5be0cd19137e2179ULL /* H'* initial state for SHA-384 */ #define HP0 0xcbbb9d5dc1059ed8ULL #define HP1 0x629a292a367cd507ULL #define HP2 0x9159015a3070dd17ULL #define HP3 0x152fecd8f70e5939ULL #define HP4 0x67332667ffc00b31ULL #define HP5 0x8eb44a8768581511ULL #define HP6 0xdb0c2e0d64f98fa7ULL #define HP7 0x47b5481dbefa4fa4ULL static inline void LOAD_OP(int I, u64 *W, const u8 *input) { u64 t1 = input[(8*I) ] & 0xff; t1 <<= 8; t1 |= input[(8*I)+1] & 0xff; t1 <<= 8; t1 |= input[(8*I)+2] & 0xff; t1 <<= 8; t1 |= input[(8*I)+3] & 0xff; t1 <<= 8; t1 |= input[(8*I)+4] & 0xff; t1 <<= 8; t1 |= input[(8*I)+5] & 0xff; t1 <<= 8; t1 |= input[(8*I)+6] & 0xff; t1 <<= 8; t1 |= input[(8*I)+7] & 0xff; W[I] = t1; } static inline void BLEND_OP(int I, u64 *W) { W[I] = s1(W[I-2]) + W[I-7] + s0(W[I-15]) + W[I-16]; } static void sha512_transform(u64 *state, const u8 *input) { u64 a, b, c, d, e, f, g, h, t1, t2; u64 W[80]; int i; /* load the input */ for (i = 0; i < 16; i++) LOAD_OP(i, W, input); for (i = 16; i < 80; i++) { BLEND_OP(i, W); } /* load the state into our registers */ a=state[0]; b=state[1]; c=state[2]; d=state[3]; e=state[4]; f=state[5]; g=state[6]; h=state[7]; /* now iterate */ for (i=0; i<80; i+=8) { t1 = h + e1(e) + Ch(e,f,g) + sha512_K[i ] + W[i ]; t2 = e0(a) + Maj(a,b,c); d+=t1; h=t1+t2; t1 = g + e1(d) + Ch(d,e,f) + sha512_K[i+1] + W[i+1]; t2 = e0(h) + Maj(h,a,b); c+=t1; g=t1+t2; t1 = f + e1(c) + Ch(c,d,e) + sha512_K[i+2] + W[i+2]; t2 = e0(g) + Maj(g,h,a); b+=t1; f=t1+t2; t1 = e + e1(b) + Ch(b,c,d) + sha512_K[i+3] + W[i+3]; t2 = e0(f) + Maj(f,g,h); a+=t1; e=t1+t2; t1 = d + e1(a) + Ch(a,b,c) + sha512_K[i+4] + W[i+4]; t2 = e0(e) + Maj(e,f,g); h+=t1; d=t1+t2; t1 = c + e1(h) + Ch(h,a,b) + sha512_K[i+5] + W[i+5]; t2 = e0(d) + Maj(d,e,f); g+=t1; c=t1+t2; t1 = b + e1(g) + Ch(g,h,a) + sha512_K[i+6] + W[i+6]; t2 = e0(c) + Maj(c,d,e); f+=t1; b=t1+t2; t1 = a + e1(f) + Ch(f,g,h) + sha512_K[i+7] + W[i+7]; t2 = e0(b) + Maj(b,c,d); e+=t1; a=t1+t2; } state[0] += a; state[1] += b; state[2] += c; state[3] += d; state[4] += e; state[5] += f; state[6] += g; state[7] += h; /* erase our data */ a = b = c = d = e = f = g = h = t1 = t2 = 0; memset(W, 0, 80 * sizeof(u64)); } static void sha512_init(void *ctx) { struct sha512_ctx *sctx = ctx; sctx->state[0] = H0; sctx->state[1] = H1; sctx->state[2] = H2; sctx->state[3] = H3; sctx->state[4] = H4; sctx->state[5] = H5; sctx->state[6] = H6; sctx->state[7] = H7; sctx->count[0] = sctx->count[1] = sctx->count[2] = sctx->count[3] = 0; memset(sctx->buf, 0, sizeof(sctx->buf)); } static void sha384_init(void *ctx) { struct sha512_ctx *sctx = ctx; sctx->state[0] = HP0; sctx->state[1] = HP1; sctx->state[2] = HP2; sctx->state[3] = HP3; sctx->state[4] = HP4; sctx->state[5] = HP5; sctx->state[6] = HP6; sctx->state[7] = HP7; sctx->count[0] = sctx->count[1] = sctx->count[2] = sctx->count[3] = 0; memset(sctx->buf, 0, sizeof(sctx->buf)); } static void sha512_update(void *ctx, const u8 *data, unsigned int len) { struct sha512_ctx *sctx = ctx; unsigned int i, index, part_len; /* Compute number of bytes mod 128 */ index = (unsigned int)((sctx->count[0] >> 3) & 0x7F); /* Update number of bits */ if ((sctx->count[0] += (len << 3)) < (len << 3)) { if ((sctx->count[1] += 1) < 1) if ((sctx->count[2] += 1) < 1) sctx->count[3]++; sctx->count[1] += (len >> 29); } part_len = 128 - index; /* Transform as many times as possible. */ if (len >= part_len) { memcpy(&sctx->buf[index], data, part_len); sha512_transform(sctx->state, sctx->buf); for (i = part_len; i + 127 < len; i+=128) sha512_transform(sctx->state, &data[i]); index = 0; } else { i = 0; } /* Buffer remaining input */ memcpy(&sctx->buf[index], &data[i], len - i); } static void sha512_final(void *ctx, u8 *hash) { struct sha512_ctx *sctx = ctx; const static u8 padding[128] = { 0x80, }; u32 t; u64 t2; u8 bits[128]; unsigned int index, pad_len; int i, j; index = pad_len = t = i = j = 0; t2 = 0; /* Save number of bits */ t = sctx->count[0]; bits[15] = t; t>>=8; bits[14] = t; t>>=8; bits[13] = t; t>>=8; bits[12] = t; t = sctx->count[1]; bits[11] = t; t>>=8; bits[10] = t; t>>=8; bits[9 ] = t; t>>=8; bits[8 ] = t; t = sctx->count[2]; bits[7 ] = t; t>>=8; bits[6 ] = t; t>>=8; bits[5 ] = t; t>>=8; bits[4 ] = t; t = sctx->count[3]; bits[3 ] = t; t>>=8; bits[2 ] = t; t>>=8; bits[1 ] = t; t>>=8; bits[0 ] = t; /* Pad out to 112 mod 128. */ index = (sctx->count[0] >> 3) & 0x7f; pad_len = (index < 112) ? (112 - index) : ((128+112) - index); sha512_update(sctx, padding, pad_len); /* Append length (before padding) */ sha512_update(sctx, bits, 16); /* Store state in digest */ for (i = j = 0; i < 8; i++, j += 8) { t2 = sctx->state[i]; hash[j+7] = (char)t2 & 0xff; t2>>=8; hash[j+6] = (char)t2 & 0xff; t2>>=8; hash[j+5] = (char)t2 & 0xff; t2>>=8; hash[j+4] = (char)t2 & 0xff; t2>>=8; hash[j+3] = (char)t2 & 0xff; t2>>=8; hash[j+2] = (char)t2 & 0xff; t2>>=8; hash[j+1] = (char)t2 & 0xff; t2>>=8; hash[j ] = (char)t2 & 0xff; } /* Zeroize sensitive information. */ memset(sctx, 0, sizeof(struct sha512_ctx)); } static void sha384_final(void *ctx, u8 *hash) { struct sha512_ctx *sctx = ctx; u8 D[64]; sha512_final(sctx, D); memcpy(hash, D, 48); memset(D, 0, 64); } static struct crypto_alg sha512 = { .cra_name = "sha512", .cra_flags = CRYPTO_ALG_TYPE_DIGEST, .cra_blocksize = SHA512_HMAC_BLOCK_SIZE, .cra_ctxsize = sizeof(struct sha512_ctx), .cra_module = THIS_MODULE, .cra_list = LIST_HEAD_INIT(sha512.cra_list), .cra_u = { .digest = { .dia_digestsize = SHA512_DIGEST_SIZE, .dia_init = sha512_init, .dia_update = sha512_update, .dia_final = sha512_final } } }; static struct crypto_alg sha384 = { .cra_name = "sha384", .cra_flags = CRYPTO_ALG_TYPE_DIGEST, .cra_blocksize = SHA384_HMAC_BLOCK_SIZE, .cra_ctxsize = sizeof(struct sha512_ctx), .cra_module = THIS_MODULE, .cra_list = LIST_HEAD_INIT(sha384.cra_list), .cra_u = { .digest = { .dia_digestsize = SHA384_DIGEST_SIZE, .dia_init = sha384_init, .dia_update = sha512_update, .dia_final = sha384_final } } }; static int __init init(void) { int ret = 0; if ((ret = crypto_register_alg(&sha384)) < 0) goto out; if ((ret = crypto_register_alg(&sha512)) < 0) crypto_unregister_alg(&sha384); out: return ret; } static void __exit fini(void) { crypto_unregister_alg(&sha384); crypto_unregister_alg(&sha512); } module_init(init); module_exit(fini); MODULE_LICENSE("GPL"); MODULE_DESCRIPTION("SHA-512 and SHA-384 Secure Hash Algorithms"); |