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00023 #include "rmd160.h"
00024
00025 #ifndef lint
00026
00027 #endif
00028
00029
00030
00031 #ifdef HAVE_SYS_ENDIAN_H_
00032 #include <sys/endian.h>
00033 #endif
00034
00035 #ifdef HAVE_MACHINE_ENDIAN_H_
00036 #include <machine/endian.h>
00037 #endif
00038
00039
00040
00041 #include <assert.h>
00042 #include <stdio.h>
00043 #include <stdlib.h>
00044 #include <string.h>
00045
00046 #ifndef _DIAGASSERT
00047 #define _DIAGASSERT(cond) assert(cond)
00048 #endif
00049
00050
00051
00052
00053
00054
00055
00056 #define BYTES_TO_DWORD(strptr) \
00057 (((uint32_t) *((strptr)+3) << 24) | \
00058 ((uint32_t) *((strptr)+2) << 16) | \
00059 ((uint32_t) *((strptr)+1) << 8) | \
00060 ((uint32_t) *(strptr)))
00061
00062
00063
00064 #define ROL(x, n) (((x) << (n)) | ((x) >> (32-(n))))
00065
00066
00067 #define F(x, y, z) ((x) ^ (y) ^ (z))
00068 #define G(x, y, z) (((x) & (y)) | (~(x) & (z)))
00069 #define H(x, y, z) (((x) | ~(y)) ^ (z))
00070 #define I(x, y, z) (((x) & (z)) | ((y) & ~(z)))
00071 #define J(x, y, z) ((x) ^ ((y) | ~(z)))
00072
00073
00074 #define FF(a, b, c, d, e, x, s) { \
00075 (a) += F((b), (c), (d)) + (x); \
00076 (a) = ROL((a), (s)) + (e); \
00077 (c) = ROL((c), 10); \
00078 }
00079 #define GG(a, b, c, d, e, x, s) { \
00080 (a) += G((b), (c), (d)) + (x) + 0x5a827999U; \
00081 (a) = ROL((a), (s)) + (e); \
00082 (c) = ROL((c), 10); \
00083 }
00084 #define HH(a, b, c, d, e, x, s) { \
00085 (a) += H((b), (c), (d)) + (x) + 0x6ed9eba1U; \
00086 (a) = ROL((a), (s)) + (e); \
00087 (c) = ROL((c), 10); \
00088 }
00089 #define II(a, b, c, d, e, x, s) { \
00090 (a) += I((b), (c), (d)) + (x) + 0x8f1bbcdcU; \
00091 (a) = ROL((a), (s)) + (e); \
00092 (c) = ROL((c), 10); \
00093 }
00094 #define JJ(a, b, c, d, e, x, s) { \
00095 (a) += J((b), (c), (d)) + (x) + 0xa953fd4eU; \
00096 (a) = ROL((a), (s)) + (e); \
00097 (c) = ROL((c), 10); \
00098 }
00099 #define FFF(a, b, c, d, e, x, s) { \
00100 (a) += F((b), (c), (d)) + (x); \
00101 (a) = ROL((a), (s)) + (e); \
00102 (c) = ROL((c), 10); \
00103 }
00104 #define GGG(a, b, c, d, e, x, s) { \
00105 (a) += G((b), (c), (d)) + (x) + 0x7a6d76e9U; \
00106 (a) = ROL((a), (s)) + (e); \
00107 (c) = ROL((c), 10); \
00108 }
00109 #define HHH(a, b, c, d, e, x, s) { \
00110 (a) += H((b), (c), (d)) + (x) + 0x6d703ef3U; \
00111 (a) = ROL((a), (s)) + (e); \
00112 (c) = ROL((c), 10); \
00113 }
00114 #define III(a, b, c, d, e, x, s) { \
00115 (a) += I((b), (c), (d)) + (x) + 0x5c4dd124U; \
00116 (a) = ROL((a), (s)) + (e); \
00117 (c) = ROL((c), 10); \
00118 }
00119 #define JJJ(a, b, c, d, e, x, s) { \
00120 (a) += J((b), (c), (d)) + (x) + 0x50a28be6U; \
00121 (a) = ROL((a), (s)) + (e); \
00122 (c) = ROL((c), 10); \
00123 }
00124
00125
00126
00127 void
00128 RMD160_Init(RMD160_CTX *context)
00129 {
00130
00131 _DIAGASSERT(context != NULL);
00132
00133
00134 context->state[0] = 0x67452301U;
00135 context->state[1] = 0xefcdab89U;
00136 context->state[2] = 0x98badcfeU;
00137 context->state[3] = 0x10325476U;
00138 context->state[4] = 0xc3d2e1f0U;
00139 context->length[0] = context->length[1] = 0;
00140 context->buflen = 0;
00141 }
00142
00143
00144
00145 void
00146 RMD160_Transform(uint32_t state[5], const uint32_t block[16])
00147 {
00148 uint32_t aa, bb, cc, dd, ee;
00149 uint32_t aaa, bbb, ccc, ddd, eee;
00150
00151 _DIAGASSERT(state != NULL);
00152 _DIAGASSERT(block != NULL);
00153
00154 aa = aaa = state[0];
00155 bb = bbb = state[1];
00156 cc = ccc = state[2];
00157 dd = ddd = state[3];
00158 ee = eee = state[4];
00159
00160
00161 FF(aa, bb, cc, dd, ee, block[ 0], 11);
00162 FF(ee, aa, bb, cc, dd, block[ 1], 14);
00163 FF(dd, ee, aa, bb, cc, block[ 2], 15);
00164 FF(cc, dd, ee, aa, bb, block[ 3], 12);
00165 FF(bb, cc, dd, ee, aa, block[ 4], 5);
00166 FF(aa, bb, cc, dd, ee, block[ 5], 8);
00167 FF(ee, aa, bb, cc, dd, block[ 6], 7);
00168 FF(dd, ee, aa, bb, cc, block[ 7], 9);
00169 FF(cc, dd, ee, aa, bb, block[ 8], 11);
00170 FF(bb, cc, dd, ee, aa, block[ 9], 13);
00171 FF(aa, bb, cc, dd, ee, block[10], 14);
00172 FF(ee, aa, bb, cc, dd, block[11], 15);
00173 FF(dd, ee, aa, bb, cc, block[12], 6);
00174 FF(cc, dd, ee, aa, bb, block[13], 7);
00175 FF(bb, cc, dd, ee, aa, block[14], 9);
00176 FF(aa, bb, cc, dd, ee, block[15], 8);
00177
00178
00179 GG(ee, aa, bb, cc, dd, block[ 7], 7);
00180 GG(dd, ee, aa, bb, cc, block[ 4], 6);
00181 GG(cc, dd, ee, aa, bb, block[13], 8);
00182 GG(bb, cc, dd, ee, aa, block[ 1], 13);
00183 GG(aa, bb, cc, dd, ee, block[10], 11);
00184 GG(ee, aa, bb, cc, dd, block[ 6], 9);
00185 GG(dd, ee, aa, bb, cc, block[15], 7);
00186 GG(cc, dd, ee, aa, bb, block[ 3], 15);
00187 GG(bb, cc, dd, ee, aa, block[12], 7);
00188 GG(aa, bb, cc, dd, ee, block[ 0], 12);
00189 GG(ee, aa, bb, cc, dd, block[ 9], 15);
00190 GG(dd, ee, aa, bb, cc, block[ 5], 9);
00191 GG(cc, dd, ee, aa, bb, block[ 2], 11);
00192 GG(bb, cc, dd, ee, aa, block[14], 7);
00193 GG(aa, bb, cc, dd, ee, block[11], 13);
00194 GG(ee, aa, bb, cc, dd, block[ 8], 12);
00195
00196
00197 HH(dd, ee, aa, bb, cc, block[ 3], 11);
00198 HH(cc, dd, ee, aa, bb, block[10], 13);
00199 HH(bb, cc, dd, ee, aa, block[14], 6);
00200 HH(aa, bb, cc, dd, ee, block[ 4], 7);
00201 HH(ee, aa, bb, cc, dd, block[ 9], 14);
00202 HH(dd, ee, aa, bb, cc, block[15], 9);
00203 HH(cc, dd, ee, aa, bb, block[ 8], 13);
00204 HH(bb, cc, dd, ee, aa, block[ 1], 15);
00205 HH(aa, bb, cc, dd, ee, block[ 2], 14);
00206 HH(ee, aa, bb, cc, dd, block[ 7], 8);
00207 HH(dd, ee, aa, bb, cc, block[ 0], 13);
00208 HH(cc, dd, ee, aa, bb, block[ 6], 6);
00209 HH(bb, cc, dd, ee, aa, block[13], 5);
00210 HH(aa, bb, cc, dd, ee, block[11], 12);
00211 HH(ee, aa, bb, cc, dd, block[ 5], 7);
00212 HH(dd, ee, aa, bb, cc, block[12], 5);
00213
00214
00215 II(cc, dd, ee, aa, bb, block[ 1], 11);
00216 II(bb, cc, dd, ee, aa, block[ 9], 12);
00217 II(aa, bb, cc, dd, ee, block[11], 14);
00218 II(ee, aa, bb, cc, dd, block[10], 15);
00219 II(dd, ee, aa, bb, cc, block[ 0], 14);
00220 II(cc, dd, ee, aa, bb, block[ 8], 15);
00221 II(bb, cc, dd, ee, aa, block[12], 9);
00222 II(aa, bb, cc, dd, ee, block[ 4], 8);
00223 II(ee, aa, bb, cc, dd, block[13], 9);
00224 II(dd, ee, aa, bb, cc, block[ 3], 14);
00225 II(cc, dd, ee, aa, bb, block[ 7], 5);
00226 II(bb, cc, dd, ee, aa, block[15], 6);
00227 II(aa, bb, cc, dd, ee, block[14], 8);
00228 II(ee, aa, bb, cc, dd, block[ 5], 6);
00229 II(dd, ee, aa, bb, cc, block[ 6], 5);
00230 II(cc, dd, ee, aa, bb, block[ 2], 12);
00231
00232
00233 JJ(bb, cc, dd, ee, aa, block[ 4], 9);
00234 JJ(aa, bb, cc, dd, ee, block[ 0], 15);
00235 JJ(ee, aa, bb, cc, dd, block[ 5], 5);
00236 JJ(dd, ee, aa, bb, cc, block[ 9], 11);
00237 JJ(cc, dd, ee, aa, bb, block[ 7], 6);
00238 JJ(bb, cc, dd, ee, aa, block[12], 8);
00239 JJ(aa, bb, cc, dd, ee, block[ 2], 13);
00240 JJ(ee, aa, bb, cc, dd, block[10], 12);
00241 JJ(dd, ee, aa, bb, cc, block[14], 5);
00242 JJ(cc, dd, ee, aa, bb, block[ 1], 12);
00243 JJ(bb, cc, dd, ee, aa, block[ 3], 13);
00244 JJ(aa, bb, cc, dd, ee, block[ 8], 14);
00245 JJ(ee, aa, bb, cc, dd, block[11], 11);
00246 JJ(dd, ee, aa, bb, cc, block[ 6], 8);
00247 JJ(cc, dd, ee, aa, bb, block[15], 5);
00248 JJ(bb, cc, dd, ee, aa, block[13], 6);
00249
00250
00251 JJJ(aaa, bbb, ccc, ddd, eee, block[ 5], 8);
00252 JJJ(eee, aaa, bbb, ccc, ddd, block[14], 9);
00253 JJJ(ddd, eee, aaa, bbb, ccc, block[ 7], 9);
00254 JJJ(ccc, ddd, eee, aaa, bbb, block[ 0], 11);
00255 JJJ(bbb, ccc, ddd, eee, aaa, block[ 9], 13);
00256 JJJ(aaa, bbb, ccc, ddd, eee, block[ 2], 15);
00257 JJJ(eee, aaa, bbb, ccc, ddd, block[11], 15);
00258 JJJ(ddd, eee, aaa, bbb, ccc, block[ 4], 5);
00259 JJJ(ccc, ddd, eee, aaa, bbb, block[13], 7);
00260 JJJ(bbb, ccc, ddd, eee, aaa, block[ 6], 7);
00261 JJJ(aaa, bbb, ccc, ddd, eee, block[15], 8);
00262 JJJ(eee, aaa, bbb, ccc, ddd, block[ 8], 11);
00263 JJJ(ddd, eee, aaa, bbb, ccc, block[ 1], 14);
00264 JJJ(ccc, ddd, eee, aaa, bbb, block[10], 14);
00265 JJJ(bbb, ccc, ddd, eee, aaa, block[ 3], 12);
00266 JJJ(aaa, bbb, ccc, ddd, eee, block[12], 6);
00267
00268
00269 III(eee, aaa, bbb, ccc, ddd, block[ 6], 9);
00270 III(ddd, eee, aaa, bbb, ccc, block[11], 13);
00271 III(ccc, ddd, eee, aaa, bbb, block[ 3], 15);
00272 III(bbb, ccc, ddd, eee, aaa, block[ 7], 7);
00273 III(aaa, bbb, ccc, ddd, eee, block[ 0], 12);
00274 III(eee, aaa, bbb, ccc, ddd, block[13], 8);
00275 III(ddd, eee, aaa, bbb, ccc, block[ 5], 9);
00276 III(ccc, ddd, eee, aaa, bbb, block[10], 11);
00277 III(bbb, ccc, ddd, eee, aaa, block[14], 7);
00278 III(aaa, bbb, ccc, ddd, eee, block[15], 7);
00279 III(eee, aaa, bbb, ccc, ddd, block[ 8], 12);
00280 III(ddd, eee, aaa, bbb, ccc, block[12], 7);
00281 III(ccc, ddd, eee, aaa, bbb, block[ 4], 6);
00282 III(bbb, ccc, ddd, eee, aaa, block[ 9], 15);
00283 III(aaa, bbb, ccc, ddd, eee, block[ 1], 13);
00284 III(eee, aaa, bbb, ccc, ddd, block[ 2], 11);
00285
00286
00287 HHH(ddd, eee, aaa, bbb, ccc, block[15], 9);
00288 HHH(ccc, ddd, eee, aaa, bbb, block[ 5], 7);
00289 HHH(bbb, ccc, ddd, eee, aaa, block[ 1], 15);
00290 HHH(aaa, bbb, ccc, ddd, eee, block[ 3], 11);
00291 HHH(eee, aaa, bbb, ccc, ddd, block[ 7], 8);
00292 HHH(ddd, eee, aaa, bbb, ccc, block[14], 6);
00293 HHH(ccc, ddd, eee, aaa, bbb, block[ 6], 6);
00294 HHH(bbb, ccc, ddd, eee, aaa, block[ 9], 14);
00295 HHH(aaa, bbb, ccc, ddd, eee, block[11], 12);
00296 HHH(eee, aaa, bbb, ccc, ddd, block[ 8], 13);
00297 HHH(ddd, eee, aaa, bbb, ccc, block[12], 5);
00298 HHH(ccc, ddd, eee, aaa, bbb, block[ 2], 14);
00299 HHH(bbb, ccc, ddd, eee, aaa, block[10], 13);
00300 HHH(aaa, bbb, ccc, ddd, eee, block[ 0], 13);
00301 HHH(eee, aaa, bbb, ccc, ddd, block[ 4], 7);
00302 HHH(ddd, eee, aaa, bbb, ccc, block[13], 5);
00303
00304
00305 GGG(ccc, ddd, eee, aaa, bbb, block[ 8], 15);
00306 GGG(bbb, ccc, ddd, eee, aaa, block[ 6], 5);
00307 GGG(aaa, bbb, ccc, ddd, eee, block[ 4], 8);
00308 GGG(eee, aaa, bbb, ccc, ddd, block[ 1], 11);
00309 GGG(ddd, eee, aaa, bbb, ccc, block[ 3], 14);
00310 GGG(ccc, ddd, eee, aaa, bbb, block[11], 14);
00311 GGG(bbb, ccc, ddd, eee, aaa, block[15], 6);
00312 GGG(aaa, bbb, ccc, ddd, eee, block[ 0], 14);
00313 GGG(eee, aaa, bbb, ccc, ddd, block[ 5], 6);
00314 GGG(ddd, eee, aaa, bbb, ccc, block[12], 9);
00315 GGG(ccc, ddd, eee, aaa, bbb, block[ 2], 12);
00316 GGG(bbb, ccc, ddd, eee, aaa, block[13], 9);
00317 GGG(aaa, bbb, ccc, ddd, eee, block[ 9], 12);
00318 GGG(eee, aaa, bbb, ccc, ddd, block[ 7], 5);
00319 GGG(ddd, eee, aaa, bbb, ccc, block[10], 15);
00320 GGG(ccc, ddd, eee, aaa, bbb, block[14], 8);
00321
00322
00323 FFF(bbb, ccc, ddd, eee, aaa, block[12] , 8);
00324 FFF(aaa, bbb, ccc, ddd, eee, block[15] , 5);
00325 FFF(eee, aaa, bbb, ccc, ddd, block[10] , 12);
00326 FFF(ddd, eee, aaa, bbb, ccc, block[ 4] , 9);
00327 FFF(ccc, ddd, eee, aaa, bbb, block[ 1] , 12);
00328 FFF(bbb, ccc, ddd, eee, aaa, block[ 5] , 5);
00329 FFF(aaa, bbb, ccc, ddd, eee, block[ 8] , 14);
00330 FFF(eee, aaa, bbb, ccc, ddd, block[ 7] , 6);
00331 FFF(ddd, eee, aaa, bbb, ccc, block[ 6] , 8);
00332 FFF(ccc, ddd, eee, aaa, bbb, block[ 2] , 13);
00333 FFF(bbb, ccc, ddd, eee, aaa, block[13] , 6);
00334 FFF(aaa, bbb, ccc, ddd, eee, block[14] , 5);
00335 FFF(eee, aaa, bbb, ccc, ddd, block[ 0] , 15);
00336 FFF(ddd, eee, aaa, bbb, ccc, block[ 3] , 13);
00337 FFF(ccc, ddd, eee, aaa, bbb, block[ 9] , 11);
00338 FFF(bbb, ccc, ddd, eee, aaa, block[11] , 11);
00339
00340
00341 ddd += cc + state[1];
00342 state[1] = state[2] + dd + eee;
00343 state[2] = state[3] + ee + aaa;
00344 state[3] = state[4] + aa + bbb;
00345 state[4] = state[0] + bb + ccc;
00346 state[0] = ddd;
00347 }
00348
00349
00350
00351 void
00352 RMD160_Update(RMD160_CTX *context, const uint8_t *data, size_t nbytes)
00353 {
00354 uint32_t X[16];
00355 uint32_t ofs = 0;
00356 uint32_t i;
00357 #ifdef WORDS_BIGENDIAN
00358 uint32_t j;
00359 #endif
00360
00361 _DIAGASSERT(context != NULL);
00362 _DIAGASSERT(data != NULL);
00363
00364
00365 if (context->length[0] + nbytes < context->length[0])
00366 context->length[1]++;
00367 context->length[0] += nbytes;
00368
00369 (void)memset(X, 0, sizeof(X));
00370
00371 if ( context->buflen + nbytes < 64 )
00372 {
00373 (void)memcpy(context->bbuffer + context->buflen, data, nbytes);
00374 context->buflen += nbytes;
00375 }
00376 else
00377 {
00378
00379 ofs = 64 - context->buflen;
00380 (void)memcpy(context->bbuffer + context->buflen, data, ofs);
00381 #ifndef WORDS_BIGENDIAN
00382 (void)memcpy(X, context->bbuffer, sizeof(X));
00383 #else
00384 for (j=0; j < 16; j++)
00385 X[j] = BYTES_TO_DWORD(context->bbuffer + (4 * j));
00386 #endif
00387 RMD160_Transform(context->state, X);
00388 nbytes -= ofs;
00389
00390
00391 for (i = 0; i < (nbytes >> 6); i++) {
00392 #ifndef WORDS_BIGENDIAN
00393 (void)memcpy(X, data + (64 * i) + ofs, sizeof(X));
00394 #else
00395 for (j=0; j < 16; j++)
00396 X[j] = BYTES_TO_DWORD(data + (64 * i) + (4 * j) + ofs);
00397 #endif
00398 RMD160_Transform(context->state, X);
00399 }
00400
00401
00402
00403
00404 context->buflen = nbytes & 63;
00405 memcpy(context->bbuffer, data + (64 * i) + ofs, context->buflen);
00406 }
00407 }
00408
00409
00410
00411 void
00412 RMD160_Finish(RMD160_CTX *context, uint8_t digest[20])
00413 {
00414 uint32_t i;
00415 uint32_t X[16];
00416 #ifdef WORDS_BIGENDIAN
00417 uint32_t j;
00418 #endif
00419
00420 _DIAGASSERT(digest != NULL);
00421 _DIAGASSERT(context != NULL);
00422
00423
00424 context->bbuffer[context->buflen] = (uint8_t)'\200';
00425
00426 (void)memset(context->bbuffer + context->buflen + 1, 0,
00427 63 - context->buflen);
00428 #ifndef WORDS_BIGENDIAN
00429 (void)memcpy(X, context->bbuffer, sizeof(X));
00430 #else
00431 for (j=0; j < 16; j++)
00432 X[j] = BYTES_TO_DWORD(context->bbuffer + (4 * j));
00433 #endif
00434 if ((context->buflen) > 55) {
00435
00436 RMD160_Transform(context->state, X);
00437 (void)memset(X, 0, sizeof(X));
00438 }
00439
00440
00441 X[14] = context->length[0] << 3;
00442 X[15] = (context->length[0] >> 29) |
00443 (context->length[1] << 3);
00444 RMD160_Transform(context->state, X);
00445
00446 if (digest != NULL) {
00447 for (i = 0; i < 20; i += 4) {
00448
00449 digest[i] = context->state[i>>2];
00450 digest[i + 1] = (context->state[i>>2] >> 8);
00451 digest[i + 2] = (context->state[i>>2] >> 16);
00452 digest[i + 3] = (context->state[i>>2] >> 24);
00453 }
00454 }
00455 }
00456
00457
00458