1// SPDX-License-Identifier: GPL-2.0-or-later 2/* 3 * Cryptographic API. 4 * 5 * RIPEMD-320 - RACE Integrity Primitives Evaluation Message Digest. 6 * 7 * Based on the reference implementation by Antoon Bosselaers, ESAT-COSIC 8 * 9 * Copyright (c) 2008 Adrian-Ken Rueegsegger <ken@codelabs.ch> 10 */ 11#include <crypto/internal/hash.h> 12#include <linux/init.h> 13#include <linux/module.h> 14#include <linux/mm.h> 15#include <linux/types.h> 16#include <asm/byteorder.h> 17 18#include "ripemd.h" 19 20struct rmd320_ctx { 21 u64 byte_count; 22 u32 state[10]; 23 __le32 buffer[16]; 24}; 25 26#define K1 RMD_K1 27#define K2 RMD_K2 28#define K3 RMD_K3 29#define K4 RMD_K4 30#define K5 RMD_K5 31#define KK1 RMD_K6 32#define KK2 RMD_K7 33#define KK3 RMD_K8 34#define KK4 RMD_K9 35#define KK5 RMD_K1 36 37#define F1(x, y, z) (x ^ y ^ z) /* XOR */ 38#define F2(x, y, z) (z ^ (x & (y ^ z))) /* x ? y : z */ 39#define F3(x, y, z) ((x | ~y) ^ z) 40#define F4(x, y, z) (y ^ (z & (x ^ y))) /* z ? x : y */ 41#define F5(x, y, z) (x ^ (y | ~z)) 42 43#define ROUND(a, b, c, d, e, f, k, x, s) { \ 44 (a) += f((b), (c), (d)) + le32_to_cpup(&(x)) + (k); \ 45 (a) = rol32((a), (s)) + (e); \ 46 (c) = rol32((c), 10); \ 47} 48 49static void rmd320_transform(u32 *state, const __le32 *in) 50{ 51 u32 aa, bb, cc, dd, ee, aaa, bbb, ccc, ddd, eee; 52 53 /* Initialize left lane */ 54 aa = state[0]; 55 bb = state[1]; 56 cc = state[2]; 57 dd = state[3]; 58 ee = state[4]; 59 60 /* Initialize right lane */ 61 aaa = state[5]; 62 bbb = state[6]; 63 ccc = state[7]; 64 ddd = state[8]; 65 eee = state[9]; 66 67 /* round 1: left lane */ 68 ROUND(aa, bb, cc, dd, ee, F1, K1, in[0], 11); 69 ROUND(ee, aa, bb, cc, dd, F1, K1, in[1], 14); 70 ROUND(dd, ee, aa, bb, cc, F1, K1, in[2], 15); 71 ROUND(cc, dd, ee, aa, bb, F1, K1, in[3], 12); 72 ROUND(bb, cc, dd, ee, aa, F1, K1, in[4], 5); 73 ROUND(aa, bb, cc, dd, ee, F1, K1, in[5], 8); 74 ROUND(ee, aa, bb, cc, dd, F1, K1, in[6], 7); 75 ROUND(dd, ee, aa, bb, cc, F1, K1, in[7], 9); 76 ROUND(cc, dd, ee, aa, bb, F1, K1, in[8], 11); 77 ROUND(bb, cc, dd, ee, aa, F1, K1, in[9], 13); 78 ROUND(aa, bb, cc, dd, ee, F1, K1, in[10], 14); 79 ROUND(ee, aa, bb, cc, dd, F1, K1, in[11], 15); 80 ROUND(dd, ee, aa, bb, cc, F1, K1, in[12], 6); 81 ROUND(cc, dd, ee, aa, bb, F1, K1, in[13], 7); 82 ROUND(bb, cc, dd, ee, aa, F1, K1, in[14], 9); 83 ROUND(aa, bb, cc, dd, ee, F1, K1, in[15], 8); 84 85 /* round 1: right lane */ 86 ROUND(aaa, bbb, ccc, ddd, eee, F5, KK1, in[5], 8); 87 ROUND(eee, aaa, bbb, ccc, ddd, F5, KK1, in[14], 9); 88 ROUND(ddd, eee, aaa, bbb, ccc, F5, KK1, in[7], 9); 89 ROUND(ccc, ddd, eee, aaa, bbb, F5, KK1, in[0], 11); 90 ROUND(bbb, ccc, ddd, eee, aaa, F5, KK1, in[9], 13); 91 ROUND(aaa, bbb, ccc, ddd, eee, F5, KK1, in[2], 15); 92 ROUND(eee, aaa, bbb, ccc, ddd, F5, KK1, in[11], 15); 93 ROUND(ddd, eee, aaa, bbb, ccc, F5, KK1, in[4], 5); 94 ROUND(ccc, ddd, eee, aaa, bbb, F5, KK1, in[13], 7); 95 ROUND(bbb, ccc, ddd, eee, aaa, F5, KK1, in[6], 7); 96 ROUND(aaa, bbb, ccc, ddd, eee, F5, KK1, in[15], 8); 97 ROUND(eee, aaa, bbb, ccc, ddd, F5, KK1, in[8], 11); 98 ROUND(ddd, eee, aaa, bbb, ccc, F5, KK1, in[1], 14); 99 ROUND(ccc, ddd, eee, aaa, bbb, F5, KK1, in[10], 14); 100 ROUND(bbb, ccc, ddd, eee, aaa, F5, KK1, in[3], 12); 101 ROUND(aaa, bbb, ccc, ddd, eee, F5, KK1, in[12], 6); 102 103 /* Swap contents of "a" registers */ 104 swap(aa, aaa); 105 106 /* round 2: left lane" */ 107 ROUND(ee, aa, bb, cc, dd, F2, K2, in[7], 7); 108 ROUND(dd, ee, aa, bb, cc, F2, K2, in[4], 6); 109 ROUND(cc, dd, ee, aa, bb, F2, K2, in[13], 8); 110 ROUND(bb, cc, dd, ee, aa, F2, K2, in[1], 13); 111 ROUND(aa, bb, cc, dd, ee, F2, K2, in[10], 11); 112 ROUND(ee, aa, bb, cc, dd, F2, K2, in[6], 9); 113 ROUND(dd, ee, aa, bb, cc, F2, K2, in[15], 7); 114 ROUND(cc, dd, ee, aa, bb, F2, K2, in[3], 15); 115 ROUND(bb, cc, dd, ee, aa, F2, K2, in[12], 7); 116 ROUND(aa, bb, cc, dd, ee, F2, K2, in[0], 12); 117 ROUND(ee, aa, bb, cc, dd, F2, K2, in[9], 15); 118 ROUND(dd, ee, aa, bb, cc, F2, K2, in[5], 9); 119 ROUND(cc, dd, ee, aa, bb, F2, K2, in[2], 11); 120 ROUND(bb, cc, dd, ee, aa, F2, K2, in[14], 7); 121 ROUND(aa, bb, cc, dd, ee, F2, K2, in[11], 13); 122 ROUND(ee, aa, bb, cc, dd, F2, K2, in[8], 12); 123 124 /* round 2: right lane */ 125 ROUND(eee, aaa, bbb, ccc, ddd, F4, KK2, in[6], 9); 126 ROUND(ddd, eee, aaa, bbb, ccc, F4, KK2, in[11], 13); 127 ROUND(ccc, ddd, eee, aaa, bbb, F4, KK2, in[3], 15); 128 ROUND(bbb, ccc, ddd, eee, aaa, F4, KK2, in[7], 7); 129 ROUND(aaa, bbb, ccc, ddd, eee, F4, KK2, in[0], 12); 130 ROUND(eee, aaa, bbb, ccc, ddd, F4, KK2, in[13], 8); 131 ROUND(ddd, eee, aaa, bbb, ccc, F4, KK2, in[5], 9); 132 ROUND(ccc, ddd, eee, aaa, bbb, F4, KK2, in[10], 11); 133 ROUND(bbb, ccc, ddd, eee, aaa, F4, KK2, in[14], 7); 134 ROUND(aaa, bbb, ccc, ddd, eee, F4, KK2, in[15], 7); 135 ROUND(eee, aaa, bbb, ccc, ddd, F4, KK2, in[8], 12); 136 ROUND(ddd, eee, aaa, bbb, ccc, F4, KK2, in[12], 7); 137 ROUND(ccc, ddd, eee, aaa, bbb, F4, KK2, in[4], 6); 138 ROUND(bbb, ccc, ddd, eee, aaa, F4, KK2, in[9], 15); 139 ROUND(aaa, bbb, ccc, ddd, eee, F4, KK2, in[1], 13); 140 ROUND(eee, aaa, bbb, ccc, ddd, F4, KK2, in[2], 11); 141 142 /* Swap contents of "b" registers */ 143 swap(bb, bbb); 144 145 /* round 3: left lane" */ 146 ROUND(dd, ee, aa, bb, cc, F3, K3, in[3], 11); 147 ROUND(cc, dd, ee, aa, bb, F3, K3, in[10], 13); 148 ROUND(bb, cc, dd, ee, aa, F3, K3, in[14], 6); 149 ROUND(aa, bb, cc, dd, ee, F3, K3, in[4], 7); 150 ROUND(ee, aa, bb, cc, dd, F3, K3, in[9], 14); 151 ROUND(dd, ee, aa, bb, cc, F3, K3, in[15], 9); 152 ROUND(cc, dd, ee, aa, bb, F3, K3, in[8], 13); 153 ROUND(bb, cc, dd, ee, aa, F3, K3, in[1], 15); 154 ROUND(aa, bb, cc, dd, ee, F3, K3, in[2], 14); 155 ROUND(ee, aa, bb, cc, dd, F3, K3, in[7], 8); 156 ROUND(dd, ee, aa, bb, cc, F3, K3, in[0], 13); 157 ROUND(cc, dd, ee, aa, bb, F3, K3, in[6], 6); 158 ROUND(bb, cc, dd, ee, aa, F3, K3, in[13], 5); 159 ROUND(aa, bb, cc, dd, ee, F3, K3, in[11], 12); 160 ROUND(ee, aa, bb, cc, dd, F3, K3, in[5], 7); 161 ROUND(dd, ee, aa, bb, cc, F3, K3, in[12], 5); 162 163 /* round 3: right lane */ 164 ROUND(ddd, eee, aaa, bbb, ccc, F3, KK3, in[15], 9); 165 ROUND(ccc, ddd, eee, aaa, bbb, F3, KK3, in[5], 7); 166 ROUND(bbb, ccc, ddd, eee, aaa, F3, KK3, in[1], 15); 167 ROUND(aaa, bbb, ccc, ddd, eee, F3, KK3, in[3], 11); 168 ROUND(eee, aaa, bbb, ccc, ddd, F3, KK3, in[7], 8); 169 ROUND(ddd, eee, aaa, bbb, ccc, F3, KK3, in[14], 6); 170 ROUND(ccc, ddd, eee, aaa, bbb, F3, KK3, in[6], 6); 171 ROUND(bbb, ccc, ddd, eee, aaa, F3, KK3, in[9], 14); 172 ROUND(aaa, bbb, ccc, ddd, eee, F3, KK3, in[11], 12); 173 ROUND(eee, aaa, bbb, ccc, ddd, F3, KK3, in[8], 13); 174 ROUND(ddd, eee, aaa, bbb, ccc, F3, KK3, in[12], 5); 175 ROUND(ccc, ddd, eee, aaa, bbb, F3, KK3, in[2], 14); 176 ROUND(bbb, ccc, ddd, eee, aaa, F3, KK3, in[10], 13); 177 ROUND(aaa, bbb, ccc, ddd, eee, F3, KK3, in[0], 13); 178 ROUND(eee, aaa, bbb, ccc, ddd, F3, KK3, in[4], 7); 179 ROUND(ddd, eee, aaa, bbb, ccc, F3, KK3, in[13], 5); 180 181 /* Swap contents of "c" registers */ 182 swap(cc, ccc); 183 184 /* round 4: left lane" */ 185 ROUND(cc, dd, ee, aa, bb, F4, K4, in[1], 11); 186 ROUND(bb, cc, dd, ee, aa, F4, K4, in[9], 12); 187 ROUND(aa, bb, cc, dd, ee, F4, K4, in[11], 14); 188 ROUND(ee, aa, bb, cc, dd, F4, K4, in[10], 15); 189 ROUND(dd, ee, aa, bb, cc, F4, K4, in[0], 14); 190 ROUND(cc, dd, ee, aa, bb, F4, K4, in[8], 15); 191 ROUND(bb, cc, dd, ee, aa, F4, K4, in[12], 9); 192 ROUND(aa, bb, cc, dd, ee, F4, K4, in[4], 8); 193 ROUND(ee, aa, bb, cc, dd, F4, K4, in[13], 9); 194 ROUND(dd, ee, aa, bb, cc, F4, K4, in[3], 14); 195 ROUND(cc, dd, ee, aa, bb, F4, K4, in[7], 5); 196 ROUND(bb, cc, dd, ee, aa, F4, K4, in[15], 6); 197 ROUND(aa, bb, cc, dd, ee, F4, K4, in[14], 8); 198 ROUND(ee, aa, bb, cc, dd, F4, K4, in[5], 6); 199 ROUND(dd, ee, aa, bb, cc, F4, K4, in[6], 5); 200 ROUND(cc, dd, ee, aa, bb, F4, K4, in[2], 12); 201 202 /* round 4: right lane */ 203 ROUND(ccc, ddd, eee, aaa, bbb, F2, KK4, in[8], 15); 204 ROUND(bbb, ccc, ddd, eee, aaa, F2, KK4, in[6], 5); 205 ROUND(aaa, bbb, ccc, ddd, eee, F2, KK4, in[4], 8); 206 ROUND(eee, aaa, bbb, ccc, ddd, F2, KK4, in[1], 11); 207 ROUND(ddd, eee, aaa, bbb, ccc, F2, KK4, in[3], 14); 208 ROUND(ccc, ddd, eee, aaa, bbb, F2, KK4, in[11], 14); 209 ROUND(bbb, ccc, ddd, eee, aaa, F2, KK4, in[15], 6); 210 ROUND(aaa, bbb, ccc, ddd, eee, F2, KK4, in[0], 14); 211 ROUND(eee, aaa, bbb, ccc, ddd, F2, KK4, in[5], 6); 212 ROUND(ddd, eee, aaa, bbb, ccc, F2, KK4, in[12], 9); 213 ROUND(ccc, ddd, eee, aaa, bbb, F2, KK4, in[2], 12); 214 ROUND(bbb, ccc, ddd, eee, aaa, F2, KK4, in[13], 9); 215 ROUND(aaa, bbb, ccc, ddd, eee, F2, KK4, in[9], 12); 216 ROUND(eee, aaa, bbb, ccc, ddd, F2, KK4, in[7], 5); 217 ROUND(ddd, eee, aaa, bbb, ccc, F2, KK4, in[10], 15); 218 ROUND(ccc, ddd, eee, aaa, bbb, F2, KK4, in[14], 8); 219 220 /* Swap contents of "d" registers */ 221 swap(dd, ddd); 222 223 /* round 5: left lane" */ 224 ROUND(bb, cc, dd, ee, aa, F5, K5, in[4], 9); 225 ROUND(aa, bb, cc, dd, ee, F5, K5, in[0], 15); 226 ROUND(ee, aa, bb, cc, dd, F5, K5, in[5], 5); 227 ROUND(dd, ee, aa, bb, cc, F5, K5, in[9], 11); 228 ROUND(cc, dd, ee, aa, bb, F5, K5, in[7], 6); 229 ROUND(bb, cc, dd, ee, aa, F5, K5, in[12], 8); 230 ROUND(aa, bb, cc, dd, ee, F5, K5, in[2], 13); 231 ROUND(ee, aa, bb, cc, dd, F5, K5, in[10], 12); 232 ROUND(dd, ee, aa, bb, cc, F5, K5, in[14], 5); 233 ROUND(cc, dd, ee, aa, bb, F5, K5, in[1], 12); 234 ROUND(bb, cc, dd, ee, aa, F5, K5, in[3], 13); 235 ROUND(aa, bb, cc, dd, ee, F5, K5, in[8], 14); 236 ROUND(ee, aa, bb, cc, dd, F5, K5, in[11], 11); 237 ROUND(dd, ee, aa, bb, cc, F5, K5, in[6], 8); 238 ROUND(cc, dd, ee, aa, bb, F5, K5, in[15], 5); 239 ROUND(bb, cc, dd, ee, aa, F5, K5, in[13], 6); 240 241 /* round 5: right lane */ 242 ROUND(bbb, ccc, ddd, eee, aaa, F1, KK5, in[12], 8); 243 ROUND(aaa, bbb, ccc, ddd, eee, F1, KK5, in[15], 5); 244 ROUND(eee, aaa, bbb, ccc, ddd, F1, KK5, in[10], 12); 245 ROUND(ddd, eee, aaa, bbb, ccc, F1, KK5, in[4], 9); 246 ROUND(ccc, ddd, eee, aaa, bbb, F1, KK5, in[1], 12); 247 ROUND(bbb, ccc, ddd, eee, aaa, F1, KK5, in[5], 5); 248 ROUND(aaa, bbb, ccc, ddd, eee, F1, KK5, in[8], 14); 249 ROUND(eee, aaa, bbb, ccc, ddd, F1, KK5, in[7], 6); 250 ROUND(ddd, eee, aaa, bbb, ccc, F1, KK5, in[6], 8); 251 ROUND(ccc, ddd, eee, aaa, bbb, F1, KK5, in[2], 13); 252 ROUND(bbb, ccc, ddd, eee, aaa, F1, KK5, in[13], 6); 253 ROUND(aaa, bbb, ccc, ddd, eee, F1, KK5, in[14], 5); 254 ROUND(eee, aaa, bbb, ccc, ddd, F1, KK5, in[0], 15); 255 ROUND(ddd, eee, aaa, bbb, ccc, F1, KK5, in[3], 13); 256 ROUND(ccc, ddd, eee, aaa, bbb, F1, KK5, in[9], 11); 257 ROUND(bbb, ccc, ddd, eee, aaa, F1, KK5, in[11], 11); 258 259 /* Swap contents of "e" registers */ 260 swap(ee, eee); 261 262 /* combine results */ 263 state[0] += aa; 264 state[1] += bb; 265 state[2] += cc; 266 state[3] += dd; 267 state[4] += ee; 268 state[5] += aaa; 269 state[6] += bbb; 270 state[7] += ccc; 271 state[8] += ddd; 272 state[9] += eee; 273} 274 275static int rmd320_init(struct shash_desc *desc) 276{ 277 struct rmd320_ctx *rctx = shash_desc_ctx(desc); 278 279 rctx->byte_count = 0; 280 281 rctx->state[0] = RMD_H0; 282 rctx->state[1] = RMD_H1; 283 rctx->state[2] = RMD_H2; 284 rctx->state[3] = RMD_H3; 285 rctx->state[4] = RMD_H4; 286 rctx->state[5] = RMD_H5; 287 rctx->state[6] = RMD_H6; 288 rctx->state[7] = RMD_H7; 289 rctx->state[8] = RMD_H8; 290 rctx->state[9] = RMD_H9; 291 292 memset(rctx->buffer, 0, sizeof(rctx->buffer)); 293 294 return 0; 295} 296 297static int rmd320_update(struct shash_desc *desc, const u8 *data, 298 unsigned int len) 299{ 300 struct rmd320_ctx *rctx = shash_desc_ctx(desc); 301 const u32 avail = sizeof(rctx->buffer) - (rctx->byte_count & 0x3f); 302 303 rctx->byte_count += len; 304 305 /* Enough space in buffer? If so copy and we're done */ 306 if (avail > len) { 307 memcpy((char *)rctx->buffer + (sizeof(rctx->buffer) - avail), 308 data, len); 309 goto out; 310 } 311 312 memcpy((char *)rctx->buffer + (sizeof(rctx->buffer) - avail), 313 data, avail); 314 315 rmd320_transform(rctx->state, rctx->buffer); 316 data += avail; 317 len -= avail; 318 319 while (len >= sizeof(rctx->buffer)) { 320 memcpy(rctx->buffer, data, sizeof(rctx->buffer)); 321 rmd320_transform(rctx->state, rctx->buffer); 322 data += sizeof(rctx->buffer); 323 len -= sizeof(rctx->buffer); 324 } 325 326 memcpy(rctx->buffer, data, len); 327 328out: 329 return 0; 330} 331 332/* Add padding and return the message digest. */ 333static int rmd320_final(struct shash_desc *desc, u8 *out) 334{ 335 struct rmd320_ctx *rctx = shash_desc_ctx(desc); 336 u32 i, index, padlen; 337 __le64 bits; 338 __le32 *dst = (__le32 *)out; 339 static const u8 padding[64] = { 0x80, }; 340 341 bits = cpu_to_le64(rctx->byte_count << 3); 342 343 /* Pad out to 56 mod 64 */ 344 index = rctx->byte_count & 0x3f; 345 padlen = (index < 56) ? (56 - index) : ((64+56) - index); 346 rmd320_update(desc, padding, padlen); 347 348 /* Append length */ 349 rmd320_update(desc, (const u8 *)&bits, sizeof(bits)); 350 351 /* Store state in digest */ 352 for (i = 0; i < 10; i++) 353 dst[i] = cpu_to_le32p(&rctx->state[i]); 354 355 /* Wipe context */ 356 memset(rctx, 0, sizeof(*rctx)); 357 358 return 0; 359} 360 361static struct shash_alg alg = { 362 .digestsize = RMD320_DIGEST_SIZE, 363 .init = rmd320_init, 364 .update = rmd320_update, 365 .final = rmd320_final, 366 .descsize = sizeof(struct rmd320_ctx), 367 .base = { 368 .cra_name = "rmd320", 369 .cra_driver_name = "rmd320-generic", 370 .cra_blocksize = RMD320_BLOCK_SIZE, 371 .cra_module = THIS_MODULE, 372 } 373}; 374 375static int __init rmd320_mod_init(void) 376{ 377 return crypto_register_shash(&alg); 378} 379 380static void __exit rmd320_mod_fini(void) 381{ 382 crypto_unregister_shash(&alg); 383} 384 385subsys_initcall(rmd320_mod_init); 386module_exit(rmd320_mod_fini); 387 388MODULE_LICENSE("GPL"); 389MODULE_AUTHOR("Adrian-Ken Rueegsegger <ken@codelabs.ch>"); 390MODULE_DESCRIPTION("RIPEMD-320 Message Digest"); 391MODULE_ALIAS_CRYPTO("rmd320"); 392