1/* 2 * Cryptographic API. 3 * 4 * RIPEMD-320 - RACE Integrity Primitives Evaluation Message Digest. 5 * 6 * Based on the reference implementation by Antoon Bosselaers, ESAT-COSIC 7 * 8 * Copyright (c) 2008 Adrian-Ken Rueegsegger <rueegsegger (at) swiss-it.ch> 9 * 10 * This program is free software; you can redistribute it and/or modify it 11 * under the terms of the GNU General Public License as published by the Free 12 * Software Foundation; either version 2 of the License, or (at your option) 13 * any later version. 14 * 15 */ 16#include <crypto/internal/hash.h> 17#include <linux/init.h> 18#include <linux/module.h> 19#include <linux/mm.h> 20#include <linux/types.h> 21#include <asm/byteorder.h> 22 23#include "ripemd.h" 24 25struct rmd320_ctx { 26 u64 byte_count; 27 u32 state[10]; 28 __le32 buffer[16]; 29}; 30 31#define K1 RMD_K1 32#define K2 RMD_K2 33#define K3 RMD_K3 34#define K4 RMD_K4 35#define K5 RMD_K5 36#define KK1 RMD_K6 37#define KK2 RMD_K7 38#define KK3 RMD_K8 39#define KK4 RMD_K9 40#define KK5 RMD_K1 41 42#define F1(x, y, z) (x ^ y ^ z) /* XOR */ 43#define F2(x, y, z) (z ^ (x & (y ^ z))) /* x ? y : z */ 44#define F3(x, y, z) ((x | ~y) ^ z) 45#define F4(x, y, z) (y ^ (z & (x ^ y))) /* z ? x : y */ 46#define F5(x, y, z) (x ^ (y | ~z)) 47 48#define ROUND(a, b, c, d, e, f, k, x, s) { \ 49 (a) += f((b), (c), (d)) + le32_to_cpup(&(x)) + (k); \ 50 (a) = rol32((a), (s)) + (e); \ 51 (c) = rol32((c), 10); \ 52} 53 54static void rmd320_transform(u32 *state, const __le32 *in) 55{ 56 u32 aa, bb, cc, dd, ee, aaa, bbb, ccc, ddd, eee, tmp; 57 58 /* Initialize left lane */ 59 aa = state[0]; 60 bb = state[1]; 61 cc = state[2]; 62 dd = state[3]; 63 ee = state[4]; 64 65 /* Initialize right lane */ 66 aaa = state[5]; 67 bbb = state[6]; 68 ccc = state[7]; 69 ddd = state[8]; 70 eee = state[9]; 71 72 /* round 1: left lane */ 73 ROUND(aa, bb, cc, dd, ee, F1, K1, in[0], 11); 74 ROUND(ee, aa, bb, cc, dd, F1, K1, in[1], 14); 75 ROUND(dd, ee, aa, bb, cc, F1, K1, in[2], 15); 76 ROUND(cc, dd, ee, aa, bb, F1, K1, in[3], 12); 77 ROUND(bb, cc, dd, ee, aa, F1, K1, in[4], 5); 78 ROUND(aa, bb, cc, dd, ee, F1, K1, in[5], 8); 79 ROUND(ee, aa, bb, cc, dd, F1, K1, in[6], 7); 80 ROUND(dd, ee, aa, bb, cc, F1, K1, in[7], 9); 81 ROUND(cc, dd, ee, aa, bb, F1, K1, in[8], 11); 82 ROUND(bb, cc, dd, ee, aa, F1, K1, in[9], 13); 83 ROUND(aa, bb, cc, dd, ee, F1, K1, in[10], 14); 84 ROUND(ee, aa, bb, cc, dd, F1, K1, in[11], 15); 85 ROUND(dd, ee, aa, bb, cc, F1, K1, in[12], 6); 86 ROUND(cc, dd, ee, aa, bb, F1, K1, in[13], 7); 87 ROUND(bb, cc, dd, ee, aa, F1, K1, in[14], 9); 88 ROUND(aa, bb, cc, dd, ee, F1, K1, in[15], 8); 89 90 /* round 1: right lane */ 91 ROUND(aaa, bbb, ccc, ddd, eee, F5, KK1, in[5], 8); 92 ROUND(eee, aaa, bbb, ccc, ddd, F5, KK1, in[14], 9); 93 ROUND(ddd, eee, aaa, bbb, ccc, F5, KK1, in[7], 9); 94 ROUND(ccc, ddd, eee, aaa, bbb, F5, KK1, in[0], 11); 95 ROUND(bbb, ccc, ddd, eee, aaa, F5, KK1, in[9], 13); 96 ROUND(aaa, bbb, ccc, ddd, eee, F5, KK1, in[2], 15); 97 ROUND(eee, aaa, bbb, ccc, ddd, F5, KK1, in[11], 15); 98 ROUND(ddd, eee, aaa, bbb, ccc, F5, KK1, in[4], 5); 99 ROUND(ccc, ddd, eee, aaa, bbb, F5, KK1, in[13], 7); 100 ROUND(bbb, ccc, ddd, eee, aaa, F5, KK1, in[6], 7); 101 ROUND(aaa, bbb, ccc, ddd, eee, F5, KK1, in[15], 8); 102 ROUND(eee, aaa, bbb, ccc, ddd, F5, KK1, in[8], 11); 103 ROUND(ddd, eee, aaa, bbb, ccc, F5, KK1, in[1], 14); 104 ROUND(ccc, ddd, eee, aaa, bbb, F5, KK1, in[10], 14); 105 ROUND(bbb, ccc, ddd, eee, aaa, F5, KK1, in[3], 12); 106 ROUND(aaa, bbb, ccc, ddd, eee, F5, KK1, in[12], 6); 107 108 /* Swap contents of "a" registers */ 109 tmp = aa; aa = aaa; aaa = tmp; 110 111 /* round 2: left lane" */ 112 ROUND(ee, aa, bb, cc, dd, F2, K2, in[7], 7); 113 ROUND(dd, ee, aa, bb, cc, F2, K2, in[4], 6); 114 ROUND(cc, dd, ee, aa, bb, F2, K2, in[13], 8); 115 ROUND(bb, cc, dd, ee, aa, F2, K2, in[1], 13); 116 ROUND(aa, bb, cc, dd, ee, F2, K2, in[10], 11); 117 ROUND(ee, aa, bb, cc, dd, F2, K2, in[6], 9); 118 ROUND(dd, ee, aa, bb, cc, F2, K2, in[15], 7); 119 ROUND(cc, dd, ee, aa, bb, F2, K2, in[3], 15); 120 ROUND(bb, cc, dd, ee, aa, F2, K2, in[12], 7); 121 ROUND(aa, bb, cc, dd, ee, F2, K2, in[0], 12); 122 ROUND(ee, aa, bb, cc, dd, F2, K2, in[9], 15); 123 ROUND(dd, ee, aa, bb, cc, F2, K2, in[5], 9); 124 ROUND(cc, dd, ee, aa, bb, F2, K2, in[2], 11); 125 ROUND(bb, cc, dd, ee, aa, F2, K2, in[14], 7); 126 ROUND(aa, bb, cc, dd, ee, F2, K2, in[11], 13); 127 ROUND(ee, aa, bb, cc, dd, F2, K2, in[8], 12); 128 129 /* round 2: right lane */ 130 ROUND(eee, aaa, bbb, ccc, ddd, F4, KK2, in[6], 9); 131 ROUND(ddd, eee, aaa, bbb, ccc, F4, KK2, in[11], 13); 132 ROUND(ccc, ddd, eee, aaa, bbb, F4, KK2, in[3], 15); 133 ROUND(bbb, ccc, ddd, eee, aaa, F4, KK2, in[7], 7); 134 ROUND(aaa, bbb, ccc, ddd, eee, F4, KK2, in[0], 12); 135 ROUND(eee, aaa, bbb, ccc, ddd, F4, KK2, in[13], 8); 136 ROUND(ddd, eee, aaa, bbb, ccc, F4, KK2, in[5], 9); 137 ROUND(ccc, ddd, eee, aaa, bbb, F4, KK2, in[10], 11); 138 ROUND(bbb, ccc, ddd, eee, aaa, F4, KK2, in[14], 7); 139 ROUND(aaa, bbb, ccc, ddd, eee, F4, KK2, in[15], 7); 140 ROUND(eee, aaa, bbb, ccc, ddd, F4, KK2, in[8], 12); 141 ROUND(ddd, eee, aaa, bbb, ccc, F4, KK2, in[12], 7); 142 ROUND(ccc, ddd, eee, aaa, bbb, F4, KK2, in[4], 6); 143 ROUND(bbb, ccc, ddd, eee, aaa, F4, KK2, in[9], 15); 144 ROUND(aaa, bbb, ccc, ddd, eee, F4, KK2, in[1], 13); 145 ROUND(eee, aaa, bbb, ccc, ddd, F4, KK2, in[2], 11); 146 147 /* Swap contents of "b" registers */ 148 tmp = bb; bb = bbb; bbb = tmp; 149 150 /* round 3: left lane" */ 151 ROUND(dd, ee, aa, bb, cc, F3, K3, in[3], 11); 152 ROUND(cc, dd, ee, aa, bb, F3, K3, in[10], 13); 153 ROUND(bb, cc, dd, ee, aa, F3, K3, in[14], 6); 154 ROUND(aa, bb, cc, dd, ee, F3, K3, in[4], 7); 155 ROUND(ee, aa, bb, cc, dd, F3, K3, in[9], 14); 156 ROUND(dd, ee, aa, bb, cc, F3, K3, in[15], 9); 157 ROUND(cc, dd, ee, aa, bb, F3, K3, in[8], 13); 158 ROUND(bb, cc, dd, ee, aa, F3, K3, in[1], 15); 159 ROUND(aa, bb, cc, dd, ee, F3, K3, in[2], 14); 160 ROUND(ee, aa, bb, cc, dd, F3, K3, in[7], 8); 161 ROUND(dd, ee, aa, bb, cc, F3, K3, in[0], 13); 162 ROUND(cc, dd, ee, aa, bb, F3, K3, in[6], 6); 163 ROUND(bb, cc, dd, ee, aa, F3, K3, in[13], 5); 164 ROUND(aa, bb, cc, dd, ee, F3, K3, in[11], 12); 165 ROUND(ee, aa, bb, cc, dd, F3, K3, in[5], 7); 166 ROUND(dd, ee, aa, bb, cc, F3, K3, in[12], 5); 167 168 /* round 3: right lane */ 169 ROUND(ddd, eee, aaa, bbb, ccc, F3, KK3, in[15], 9); 170 ROUND(ccc, ddd, eee, aaa, bbb, F3, KK3, in[5], 7); 171 ROUND(bbb, ccc, ddd, eee, aaa, F3, KK3, in[1], 15); 172 ROUND(aaa, bbb, ccc, ddd, eee, F3, KK3, in[3], 11); 173 ROUND(eee, aaa, bbb, ccc, ddd, F3, KK3, in[7], 8); 174 ROUND(ddd, eee, aaa, bbb, ccc, F3, KK3, in[14], 6); 175 ROUND(ccc, ddd, eee, aaa, bbb, F3, KK3, in[6], 6); 176 ROUND(bbb, ccc, ddd, eee, aaa, F3, KK3, in[9], 14); 177 ROUND(aaa, bbb, ccc, ddd, eee, F3, KK3, in[11], 12); 178 ROUND(eee, aaa, bbb, ccc, ddd, F3, KK3, in[8], 13); 179 ROUND(ddd, eee, aaa, bbb, ccc, F3, KK3, in[12], 5); 180 ROUND(ccc, ddd, eee, aaa, bbb, F3, KK3, in[2], 14); 181 ROUND(bbb, ccc, ddd, eee, aaa, F3, KK3, in[10], 13); 182 ROUND(aaa, bbb, ccc, ddd, eee, F3, KK3, in[0], 13); 183 ROUND(eee, aaa, bbb, ccc, ddd, F3, KK3, in[4], 7); 184 ROUND(ddd, eee, aaa, bbb, ccc, F3, KK3, in[13], 5); 185 186 /* Swap contents of "c" registers */ 187 tmp = cc; cc = ccc; ccc = tmp; 188 189 /* round 4: left lane" */ 190 ROUND(cc, dd, ee, aa, bb, F4, K4, in[1], 11); 191 ROUND(bb, cc, dd, ee, aa, F4, K4, in[9], 12); 192 ROUND(aa, bb, cc, dd, ee, F4, K4, in[11], 14); 193 ROUND(ee, aa, bb, cc, dd, F4, K4, in[10], 15); 194 ROUND(dd, ee, aa, bb, cc, F4, K4, in[0], 14); 195 ROUND(cc, dd, ee, aa, bb, F4, K4, in[8], 15); 196 ROUND(bb, cc, dd, ee, aa, F4, K4, in[12], 9); 197 ROUND(aa, bb, cc, dd, ee, F4, K4, in[4], 8); 198 ROUND(ee, aa, bb, cc, dd, F4, K4, in[13], 9); 199 ROUND(dd, ee, aa, bb, cc, F4, K4, in[3], 14); 200 ROUND(cc, dd, ee, aa, bb, F4, K4, in[7], 5); 201 ROUND(bb, cc, dd, ee, aa, F4, K4, in[15], 6); 202 ROUND(aa, bb, cc, dd, ee, F4, K4, in[14], 8); 203 ROUND(ee, aa, bb, cc, dd, F4, K4, in[5], 6); 204 ROUND(dd, ee, aa, bb, cc, F4, K4, in[6], 5); 205 ROUND(cc, dd, ee, aa, bb, F4, K4, in[2], 12); 206 207 /* round 4: right lane */ 208 ROUND(ccc, ddd, eee, aaa, bbb, F2, KK4, in[8], 15); 209 ROUND(bbb, ccc, ddd, eee, aaa, F2, KK4, in[6], 5); 210 ROUND(aaa, bbb, ccc, ddd, eee, F2, KK4, in[4], 8); 211 ROUND(eee, aaa, bbb, ccc, ddd, F2, KK4, in[1], 11); 212 ROUND(ddd, eee, aaa, bbb, ccc, F2, KK4, in[3], 14); 213 ROUND(ccc, ddd, eee, aaa, bbb, F2, KK4, in[11], 14); 214 ROUND(bbb, ccc, ddd, eee, aaa, F2, KK4, in[15], 6); 215 ROUND(aaa, bbb, ccc, ddd, eee, F2, KK4, in[0], 14); 216 ROUND(eee, aaa, bbb, ccc, ddd, F2, KK4, in[5], 6); 217 ROUND(ddd, eee, aaa, bbb, ccc, F2, KK4, in[12], 9); 218 ROUND(ccc, ddd, eee, aaa, bbb, F2, KK4, in[2], 12); 219 ROUND(bbb, ccc, ddd, eee, aaa, F2, KK4, in[13], 9); 220 ROUND(aaa, bbb, ccc, ddd, eee, F2, KK4, in[9], 12); 221 ROUND(eee, aaa, bbb, ccc, ddd, F2, KK4, in[7], 5); 222 ROUND(ddd, eee, aaa, bbb, ccc, F2, KK4, in[10], 15); 223 ROUND(ccc, ddd, eee, aaa, bbb, F2, KK4, in[14], 8); 224 225 /* Swap contents of "d" registers */ 226 tmp = dd; dd = ddd; ddd = tmp; 227 228 /* round 5: left lane" */ 229 ROUND(bb, cc, dd, ee, aa, F5, K5, in[4], 9); 230 ROUND(aa, bb, cc, dd, ee, F5, K5, in[0], 15); 231 ROUND(ee, aa, bb, cc, dd, F5, K5, in[5], 5); 232 ROUND(dd, ee, aa, bb, cc, F5, K5, in[9], 11); 233 ROUND(cc, dd, ee, aa, bb, F5, K5, in[7], 6); 234 ROUND(bb, cc, dd, ee, aa, F5, K5, in[12], 8); 235 ROUND(aa, bb, cc, dd, ee, F5, K5, in[2], 13); 236 ROUND(ee, aa, bb, cc, dd, F5, K5, in[10], 12); 237 ROUND(dd, ee, aa, bb, cc, F5, K5, in[14], 5); 238 ROUND(cc, dd, ee, aa, bb, F5, K5, in[1], 12); 239 ROUND(bb, cc, dd, ee, aa, F5, K5, in[3], 13); 240 ROUND(aa, bb, cc, dd, ee, F5, K5, in[8], 14); 241 ROUND(ee, aa, bb, cc, dd, F5, K5, in[11], 11); 242 ROUND(dd, ee, aa, bb, cc, F5, K5, in[6], 8); 243 ROUND(cc, dd, ee, aa, bb, F5, K5, in[15], 5); 244 ROUND(bb, cc, dd, ee, aa, F5, K5, in[13], 6); 245 246 /* round 5: right lane */ 247 ROUND(bbb, ccc, ddd, eee, aaa, F1, KK5, in[12], 8); 248 ROUND(aaa, bbb, ccc, ddd, eee, F1, KK5, in[15], 5); 249 ROUND(eee, aaa, bbb, ccc, ddd, F1, KK5, in[10], 12); 250 ROUND(ddd, eee, aaa, bbb, ccc, F1, KK5, in[4], 9); 251 ROUND(ccc, ddd, eee, aaa, bbb, F1, KK5, in[1], 12); 252 ROUND(bbb, ccc, ddd, eee, aaa, F1, KK5, in[5], 5); 253 ROUND(aaa, bbb, ccc, ddd, eee, F1, KK5, in[8], 14); 254 ROUND(eee, aaa, bbb, ccc, ddd, F1, KK5, in[7], 6); 255 ROUND(ddd, eee, aaa, bbb, ccc, F1, KK5, in[6], 8); 256 ROUND(ccc, ddd, eee, aaa, bbb, F1, KK5, in[2], 13); 257 ROUND(bbb, ccc, ddd, eee, aaa, F1, KK5, in[13], 6); 258 ROUND(aaa, bbb, ccc, ddd, eee, F1, KK5, in[14], 5); 259 ROUND(eee, aaa, bbb, ccc, ddd, F1, KK5, in[0], 15); 260 ROUND(ddd, eee, aaa, bbb, ccc, F1, KK5, in[3], 13); 261 ROUND(ccc, ddd, eee, aaa, bbb, F1, KK5, in[9], 11); 262 ROUND(bbb, ccc, ddd, eee, aaa, F1, KK5, in[11], 11); 263 264 /* Swap contents of "e" registers */ 265 tmp = ee; ee = eee; eee = tmp; 266 267 /* combine results */ 268 state[0] += aa; 269 state[1] += bb; 270 state[2] += cc; 271 state[3] += dd; 272 state[4] += ee; 273 state[5] += aaa; 274 state[6] += bbb; 275 state[7] += ccc; 276 state[8] += ddd; 277 state[9] += eee; 278 279 return; 280} 281 282static int rmd320_init(struct shash_desc *desc) 283{ 284 struct rmd320_ctx *rctx = shash_desc_ctx(desc); 285 286 rctx->byte_count = 0; 287 288 rctx->state[0] = RMD_H0; 289 rctx->state[1] = RMD_H1; 290 rctx->state[2] = RMD_H2; 291 rctx->state[3] = RMD_H3; 292 rctx->state[4] = RMD_H4; 293 rctx->state[5] = RMD_H5; 294 rctx->state[6] = RMD_H6; 295 rctx->state[7] = RMD_H7; 296 rctx->state[8] = RMD_H8; 297 rctx->state[9] = RMD_H9; 298 299 memset(rctx->buffer, 0, sizeof(rctx->buffer)); 300 301 return 0; 302} 303 304static int rmd320_update(struct shash_desc *desc, const u8 *data, 305 unsigned int len) 306{ 307 struct rmd320_ctx *rctx = shash_desc_ctx(desc); 308 const u32 avail = sizeof(rctx->buffer) - (rctx->byte_count & 0x3f); 309 310 rctx->byte_count += len; 311 312 /* Enough space in buffer? If so copy and we're done */ 313 if (avail > len) { 314 memcpy((char *)rctx->buffer + (sizeof(rctx->buffer) - avail), 315 data, len); 316 goto out; 317 } 318 319 memcpy((char *)rctx->buffer + (sizeof(rctx->buffer) - avail), 320 data, avail); 321 322 rmd320_transform(rctx->state, rctx->buffer); 323 data += avail; 324 len -= avail; 325 326 while (len >= sizeof(rctx->buffer)) { 327 memcpy(rctx->buffer, data, sizeof(rctx->buffer)); 328 rmd320_transform(rctx->state, rctx->buffer); 329 data += sizeof(rctx->buffer); 330 len -= sizeof(rctx->buffer); 331 } 332 333 memcpy(rctx->buffer, data, len); 334 335out: 336 return 0; 337} 338 339/* Add padding and return the message digest. */ 340static int rmd320_final(struct shash_desc *desc, u8 *out) 341{ 342 struct rmd320_ctx *rctx = shash_desc_ctx(desc); 343 u32 i, index, padlen; 344 __le64 bits; 345 __le32 *dst = (__le32 *)out; 346 static const u8 padding[64] = { 0x80, }; 347 348 bits = cpu_to_le64(rctx->byte_count << 3); 349 350 /* Pad out to 56 mod 64 */ 351 index = rctx->byte_count & 0x3f; 352 padlen = (index < 56) ? (56 - index) : ((64+56) - index); 353 rmd320_update(desc, padding, padlen); 354 355 /* Append length */ 356 rmd320_update(desc, (const u8 *)&bits, sizeof(bits)); 357 358 /* Store state in digest */ 359 for (i = 0; i < 10; i++) 360 dst[i] = cpu_to_le32p(&rctx->state[i]); 361 362 /* Wipe context */ 363 memset(rctx, 0, sizeof(*rctx)); 364 365 return 0; 366} 367 368static struct shash_alg alg = { 369 .digestsize = RMD320_DIGEST_SIZE, 370 .init = rmd320_init, 371 .update = rmd320_update, 372 .final = rmd320_final, 373 .descsize = sizeof(struct rmd320_ctx), 374 .base = { 375 .cra_name = "rmd320", 376 .cra_flags = CRYPTO_ALG_TYPE_SHASH, 377 .cra_blocksize = RMD320_BLOCK_SIZE, 378 .cra_module = THIS_MODULE, 379 } 380}; 381 382static int __init rmd320_mod_init(void) 383{ 384 return crypto_register_shash(&alg); 385} 386 387static void __exit rmd320_mod_fini(void) 388{ 389 crypto_unregister_shash(&alg); 390} 391 392module_init(rmd320_mod_init); 393module_exit(rmd320_mod_fini); 394 395MODULE_LICENSE("GPL"); 396MODULE_DESCRIPTION("RIPEMD-320 Message Digest"); 397