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1// SPDX-License-Identifier: GPL-2.0-or-later2/*3 * Cryptographic API.4 *5 * RIPEMD-160 - RACE Integrity Primitives Evaluation Message Digest.6 *7 * Based on the reference implementation by Antoon Bosselaers, ESAT-COSIC8 *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 rmd160_ctx {21 u64 byte_count;22 u32 state[5];23 __le32 buffer[16];24};25 26#define K1 RMD_K127#define K2 RMD_K228#define K3 RMD_K329#define K4 RMD_K430#define K5 RMD_K531#define KK1 RMD_K632#define KK2 RMD_K733#define KK3 RMD_K834#define KK4 RMD_K935#define KK5 RMD_K136 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 rmd160_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[0];62 bbb = state[1];63 ccc = state[2];64 ddd = state[3];65 eee = state[4];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 2: left lane" */86 ROUND(ee, aa, bb, cc, dd, F2, K2, in[7], 7);87 ROUND(dd, ee, aa, bb, cc, F2, K2, in[4], 6);88 ROUND(cc, dd, ee, aa, bb, F2, K2, in[13], 8);89 ROUND(bb, cc, dd, ee, aa, F2, K2, in[1], 13);90 ROUND(aa, bb, cc, dd, ee, F2, K2, in[10], 11);91 ROUND(ee, aa, bb, cc, dd, F2, K2, in[6], 9);92 ROUND(dd, ee, aa, bb, cc, F2, K2, in[15], 7);93 ROUND(cc, dd, ee, aa, bb, F2, K2, in[3], 15);94 ROUND(bb, cc, dd, ee, aa, F2, K2, in[12], 7);95 ROUND(aa, bb, cc, dd, ee, F2, K2, in[0], 12);96 ROUND(ee, aa, bb, cc, dd, F2, K2, in[9], 15);97 ROUND(dd, ee, aa, bb, cc, F2, K2, in[5], 9);98 ROUND(cc, dd, ee, aa, bb, F2, K2, in[2], 11);99 ROUND(bb, cc, dd, ee, aa, F2, K2, in[14], 7);100 ROUND(aa, bb, cc, dd, ee, F2, K2, in[11], 13);101 ROUND(ee, aa, bb, cc, dd, F2, K2, in[8], 12);102 103 /* round 3: left lane" */104 ROUND(dd, ee, aa, bb, cc, F3, K3, in[3], 11);105 ROUND(cc, dd, ee, aa, bb, F3, K3, in[10], 13);106 ROUND(bb, cc, dd, ee, aa, F3, K3, in[14], 6);107 ROUND(aa, bb, cc, dd, ee, F3, K3, in[4], 7);108 ROUND(ee, aa, bb, cc, dd, F3, K3, in[9], 14);109 ROUND(dd, ee, aa, bb, cc, F3, K3, in[15], 9);110 ROUND(cc, dd, ee, aa, bb, F3, K3, in[8], 13);111 ROUND(bb, cc, dd, ee, aa, F3, K3, in[1], 15);112 ROUND(aa, bb, cc, dd, ee, F3, K3, in[2], 14);113 ROUND(ee, aa, bb, cc, dd, F3, K3, in[7], 8);114 ROUND(dd, ee, aa, bb, cc, F3, K3, in[0], 13);115 ROUND(cc, dd, ee, aa, bb, F3, K3, in[6], 6);116 ROUND(bb, cc, dd, ee, aa, F3, K3, in[13], 5);117 ROUND(aa, bb, cc, dd, ee, F3, K3, in[11], 12);118 ROUND(ee, aa, bb, cc, dd, F3, K3, in[5], 7);119 ROUND(dd, ee, aa, bb, cc, F3, K3, in[12], 5);120 121 /* round 4: left lane" */122 ROUND(cc, dd, ee, aa, bb, F4, K4, in[1], 11);123 ROUND(bb, cc, dd, ee, aa, F4, K4, in[9], 12);124 ROUND(aa, bb, cc, dd, ee, F4, K4, in[11], 14);125 ROUND(ee, aa, bb, cc, dd, F4, K4, in[10], 15);126 ROUND(dd, ee, aa, bb, cc, F4, K4, in[0], 14);127 ROUND(cc, dd, ee, aa, bb, F4, K4, in[8], 15);128 ROUND(bb, cc, dd, ee, aa, F4, K4, in[12], 9);129 ROUND(aa, bb, cc, dd, ee, F4, K4, in[4], 8);130 ROUND(ee, aa, bb, cc, dd, F4, K4, in[13], 9);131 ROUND(dd, ee, aa, bb, cc, F4, K4, in[3], 14);132 ROUND(cc, dd, ee, aa, bb, F4, K4, in[7], 5);133 ROUND(bb, cc, dd, ee, aa, F4, K4, in[15], 6);134 ROUND(aa, bb, cc, dd, ee, F4, K4, in[14], 8);135 ROUND(ee, aa, bb, cc, dd, F4, K4, in[5], 6);136 ROUND(dd, ee, aa, bb, cc, F4, K4, in[6], 5);137 ROUND(cc, dd, ee, aa, bb, F4, K4, in[2], 12);138 139 /* round 5: left lane" */140 ROUND(bb, cc, dd, ee, aa, F5, K5, in[4], 9);141 ROUND(aa, bb, cc, dd, ee, F5, K5, in[0], 15);142 ROUND(ee, aa, bb, cc, dd, F5, K5, in[5], 5);143 ROUND(dd, ee, aa, bb, cc, F5, K5, in[9], 11);144 ROUND(cc, dd, ee, aa, bb, F5, K5, in[7], 6);145 ROUND(bb, cc, dd, ee, aa, F5, K5, in[12], 8);146 ROUND(aa, bb, cc, dd, ee, F5, K5, in[2], 13);147 ROUND(ee, aa, bb, cc, dd, F5, K5, in[10], 12);148 ROUND(dd, ee, aa, bb, cc, F5, K5, in[14], 5);149 ROUND(cc, dd, ee, aa, bb, F5, K5, in[1], 12);150 ROUND(bb, cc, dd, ee, aa, F5, K5, in[3], 13);151 ROUND(aa, bb, cc, dd, ee, F5, K5, in[8], 14);152 ROUND(ee, aa, bb, cc, dd, F5, K5, in[11], 11);153 ROUND(dd, ee, aa, bb, cc, F5, K5, in[6], 8);154 ROUND(cc, dd, ee, aa, bb, F5, K5, in[15], 5);155 ROUND(bb, cc, dd, ee, aa, F5, K5, in[13], 6);156 157 /* round 1: right lane */158 ROUND(aaa, bbb, ccc, ddd, eee, F5, KK1, in[5], 8);159 ROUND(eee, aaa, bbb, ccc, ddd, F5, KK1, in[14], 9);160 ROUND(ddd, eee, aaa, bbb, ccc, F5, KK1, in[7], 9);161 ROUND(ccc, ddd, eee, aaa, bbb, F5, KK1, in[0], 11);162 ROUND(bbb, ccc, ddd, eee, aaa, F5, KK1, in[9], 13);163 ROUND(aaa, bbb, ccc, ddd, eee, F5, KK1, in[2], 15);164 ROUND(eee, aaa, bbb, ccc, ddd, F5, KK1, in[11], 15);165 ROUND(ddd, eee, aaa, bbb, ccc, F5, KK1, in[4], 5);166 ROUND(ccc, ddd, eee, aaa, bbb, F5, KK1, in[13], 7);167 ROUND(bbb, ccc, ddd, eee, aaa, F5, KK1, in[6], 7);168 ROUND(aaa, bbb, ccc, ddd, eee, F5, KK1, in[15], 8);169 ROUND(eee, aaa, bbb, ccc, ddd, F5, KK1, in[8], 11);170 ROUND(ddd, eee, aaa, bbb, ccc, F5, KK1, in[1], 14);171 ROUND(ccc, ddd, eee, aaa, bbb, F5, KK1, in[10], 14);172 ROUND(bbb, ccc, ddd, eee, aaa, F5, KK1, in[3], 12);173 ROUND(aaa, bbb, ccc, ddd, eee, F5, KK1, in[12], 6);174 175 /* round 2: right lane */176 ROUND(eee, aaa, bbb, ccc, ddd, F4, KK2, in[6], 9);177 ROUND(ddd, eee, aaa, bbb, ccc, F4, KK2, in[11], 13);178 ROUND(ccc, ddd, eee, aaa, bbb, F4, KK2, in[3], 15);179 ROUND(bbb, ccc, ddd, eee, aaa, F4, KK2, in[7], 7);180 ROUND(aaa, bbb, ccc, ddd, eee, F4, KK2, in[0], 12);181 ROUND(eee, aaa, bbb, ccc, ddd, F4, KK2, in[13], 8);182 ROUND(ddd, eee, aaa, bbb, ccc, F4, KK2, in[5], 9);183 ROUND(ccc, ddd, eee, aaa, bbb, F4, KK2, in[10], 11);184 ROUND(bbb, ccc, ddd, eee, aaa, F4, KK2, in[14], 7);185 ROUND(aaa, bbb, ccc, ddd, eee, F4, KK2, in[15], 7);186 ROUND(eee, aaa, bbb, ccc, ddd, F4, KK2, in[8], 12);187 ROUND(ddd, eee, aaa, bbb, ccc, F4, KK2, in[12], 7);188 ROUND(ccc, ddd, eee, aaa, bbb, F4, KK2, in[4], 6);189 ROUND(bbb, ccc, ddd, eee, aaa, F4, KK2, in[9], 15);190 ROUND(aaa, bbb, ccc, ddd, eee, F4, KK2, in[1], 13);191 ROUND(eee, aaa, bbb, ccc, ddd, F4, KK2, in[2], 11);192 193 /* round 3: right lane */194 ROUND(ddd, eee, aaa, bbb, ccc, F3, KK3, in[15], 9);195 ROUND(ccc, ddd, eee, aaa, bbb, F3, KK3, in[5], 7);196 ROUND(bbb, ccc, ddd, eee, aaa, F3, KK3, in[1], 15);197 ROUND(aaa, bbb, ccc, ddd, eee, F3, KK3, in[3], 11);198 ROUND(eee, aaa, bbb, ccc, ddd, F3, KK3, in[7], 8);199 ROUND(ddd, eee, aaa, bbb, ccc, F3, KK3, in[14], 6);200 ROUND(ccc, ddd, eee, aaa, bbb, F3, KK3, in[6], 6);201 ROUND(bbb, ccc, ddd, eee, aaa, F3, KK3, in[9], 14);202 ROUND(aaa, bbb, ccc, ddd, eee, F3, KK3, in[11], 12);203 ROUND(eee, aaa, bbb, ccc, ddd, F3, KK3, in[8], 13);204 ROUND(ddd, eee, aaa, bbb, ccc, F3, KK3, in[12], 5);205 ROUND(ccc, ddd, eee, aaa, bbb, F3, KK3, in[2], 14);206 ROUND(bbb, ccc, ddd, eee, aaa, F3, KK3, in[10], 13);207 ROUND(aaa, bbb, ccc, ddd, eee, F3, KK3, in[0], 13);208 ROUND(eee, aaa, bbb, ccc, ddd, F3, KK3, in[4], 7);209 ROUND(ddd, eee, aaa, bbb, ccc, F3, KK3, in[13], 5);210 211 /* round 4: right lane */212 ROUND(ccc, ddd, eee, aaa, bbb, F2, KK4, in[8], 15);213 ROUND(bbb, ccc, ddd, eee, aaa, F2, KK4, in[6], 5);214 ROUND(aaa, bbb, ccc, ddd, eee, F2, KK4, in[4], 8);215 ROUND(eee, aaa, bbb, ccc, ddd, F2, KK4, in[1], 11);216 ROUND(ddd, eee, aaa, bbb, ccc, F2, KK4, in[3], 14);217 ROUND(ccc, ddd, eee, aaa, bbb, F2, KK4, in[11], 14);218 ROUND(bbb, ccc, ddd, eee, aaa, F2, KK4, in[15], 6);219 ROUND(aaa, bbb, ccc, ddd, eee, F2, KK4, in[0], 14);220 ROUND(eee, aaa, bbb, ccc, ddd, F2, KK4, in[5], 6);221 ROUND(ddd, eee, aaa, bbb, ccc, F2, KK4, in[12], 9);222 ROUND(ccc, ddd, eee, aaa, bbb, F2, KK4, in[2], 12);223 ROUND(bbb, ccc, ddd, eee, aaa, F2, KK4, in[13], 9);224 ROUND(aaa, bbb, ccc, ddd, eee, F2, KK4, in[9], 12);225 ROUND(eee, aaa, bbb, ccc, ddd, F2, KK4, in[7], 5);226 ROUND(ddd, eee, aaa, bbb, ccc, F2, KK4, in[10], 15);227 ROUND(ccc, ddd, eee, aaa, bbb, F2, KK4, in[14], 8);228 229 /* round 5: right lane */230 ROUND(bbb, ccc, ddd, eee, aaa, F1, KK5, in[12], 8);231 ROUND(aaa, bbb, ccc, ddd, eee, F1, KK5, in[15], 5);232 ROUND(eee, aaa, bbb, ccc, ddd, F1, KK5, in[10], 12);233 ROUND(ddd, eee, aaa, bbb, ccc, F1, KK5, in[4], 9);234 ROUND(ccc, ddd, eee, aaa, bbb, F1, KK5, in[1], 12);235 ROUND(bbb, ccc, ddd, eee, aaa, F1, KK5, in[5], 5);236 ROUND(aaa, bbb, ccc, ddd, eee, F1, KK5, in[8], 14);237 ROUND(eee, aaa, bbb, ccc, ddd, F1, KK5, in[7], 6);238 ROUND(ddd, eee, aaa, bbb, ccc, F1, KK5, in[6], 8);239 ROUND(ccc, ddd, eee, aaa, bbb, F1, KK5, in[2], 13);240 ROUND(bbb, ccc, ddd, eee, aaa, F1, KK5, in[13], 6);241 ROUND(aaa, bbb, ccc, ddd, eee, F1, KK5, in[14], 5);242 ROUND(eee, aaa, bbb, ccc, ddd, F1, KK5, in[0], 15);243 ROUND(ddd, eee, aaa, bbb, ccc, F1, KK5, in[3], 13);244 ROUND(ccc, ddd, eee, aaa, bbb, F1, KK5, in[9], 11);245 ROUND(bbb, ccc, ddd, eee, aaa, F1, KK5, in[11], 11);246 247 /* combine results */248 ddd += cc + state[1]; /* final result for state[0] */249 state[1] = state[2] + dd + eee;250 state[2] = state[3] + ee + aaa;251 state[3] = state[4] + aa + bbb;252 state[4] = state[0] + bb + ccc;253 state[0] = ddd;254}255 256static int rmd160_init(struct shash_desc *desc)257{258 struct rmd160_ctx *rctx = shash_desc_ctx(desc);259 260 rctx->byte_count = 0;261 262 rctx->state[0] = RMD_H0;263 rctx->state[1] = RMD_H1;264 rctx->state[2] = RMD_H2;265 rctx->state[3] = RMD_H3;266 rctx->state[4] = RMD_H4;267 268 memset(rctx->buffer, 0, sizeof(rctx->buffer));269 270 return 0;271}272 273static int rmd160_update(struct shash_desc *desc, const u8 *data,274 unsigned int len)275{276 struct rmd160_ctx *rctx = shash_desc_ctx(desc);277 const u32 avail = sizeof(rctx->buffer) - (rctx->byte_count & 0x3f);278 279 rctx->byte_count += len;280 281 /* Enough space in buffer? If so copy and we're done */282 if (avail > len) {283 memcpy((char *)rctx->buffer + (sizeof(rctx->buffer) - avail),284 data, len);285 goto out;286 }287 288 memcpy((char *)rctx->buffer + (sizeof(rctx->buffer) - avail),289 data, avail);290 291 rmd160_transform(rctx->state, rctx->buffer);292 data += avail;293 len -= avail;294 295 while (len >= sizeof(rctx->buffer)) {296 memcpy(rctx->buffer, data, sizeof(rctx->buffer));297 rmd160_transform(rctx->state, rctx->buffer);298 data += sizeof(rctx->buffer);299 len -= sizeof(rctx->buffer);300 }301 302 memcpy(rctx->buffer, data, len);303 304out:305 return 0;306}307 308/* Add padding and return the message digest. */309static int rmd160_final(struct shash_desc *desc, u8 *out)310{311 struct rmd160_ctx *rctx = shash_desc_ctx(desc);312 u32 i, index, padlen;313 __le64 bits;314 __le32 *dst = (__le32 *)out;315 static const u8 padding[64] = { 0x80, };316 317 bits = cpu_to_le64(rctx->byte_count << 3);318 319 /* Pad out to 56 mod 64 */320 index = rctx->byte_count & 0x3f;321 padlen = (index < 56) ? (56 - index) : ((64+56) - index);322 rmd160_update(desc, padding, padlen);323 324 /* Append length */325 rmd160_update(desc, (const u8 *)&bits, sizeof(bits));326 327 /* Store state in digest */328 for (i = 0; i < 5; i++)329 dst[i] = cpu_to_le32p(&rctx->state[i]);330 331 /* Wipe context */332 memset(rctx, 0, sizeof(*rctx));333 334 return 0;335}336 337static struct shash_alg alg = {338 .digestsize = RMD160_DIGEST_SIZE,339 .init = rmd160_init,340 .update = rmd160_update,341 .final = rmd160_final,342 .descsize = sizeof(struct rmd160_ctx),343 .base = {344 .cra_name = "rmd160",345 .cra_driver_name = "rmd160-generic",346 .cra_blocksize = RMD160_BLOCK_SIZE,347 .cra_module = THIS_MODULE,348 }349};350 351static int __init rmd160_mod_init(void)352{353 return crypto_register_shash(&alg);354}355 356static void __exit rmd160_mod_fini(void)357{358 crypto_unregister_shash(&alg);359}360 361subsys_initcall(rmd160_mod_init);362module_exit(rmd160_mod_fini);363 364MODULE_LICENSE("GPL");365MODULE_AUTHOR("Adrian-Ken Rueegsegger <ken@codelabs.ch>");366MODULE_DESCRIPTION("RIPEMD-160 Message Digest");367MODULE_ALIAS_CRYPTO("rmd160");368