lib/libmd/rmd160c.c

   1 /* crypto/ripemd/rmd_dgst.c */
   2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
   3  * All rights reserved.
   4  *
   5  * This package is an SSL implementation written
   6  * by Eric Young (eay@cryptsoft.com).
   7  * The implementation was written so as to conform with Netscapes SSL.
   8  *
   9  * This library is free for commercial and non-commercial use as long as
  10  * the following conditions are aheared to.  The following conditions
  11  * apply to all code found in this distribution, be it the RC4, RSA,
  12  * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
  13  * included with this distribution is covered by the same copyright terms
  14  * except that the holder is Tim Hudson (tjh@cryptsoft.com).
  15  *
  16  * Copyright remains Eric Young's, and as such any Copyright notices in
  17  * the code are not to be removed.
  18  * If this package is used in a product, Eric Young should be given attribution
  19  * as the author of the parts of the library used.
  20  * This can be in the form of a textual message at program startup or
  21  * in documentation (online or textual) provided with the package.
  22  *
  23  * Redistribution and use in source and binary forms, with or without
  24  * modification, are permitted provided that the following conditions
  25  * are met:
  26  * 1. Redistributions of source code must retain the copyright
  27  *    notice, this list of conditions and the following disclaimer.
  28  * 2. Redistributions in binary form must reproduce the above copyright
  29  *    notice, this list of conditions and the following disclaimer in the
  30  *    documentation and/or other materials provided with the distribution.
  31  * 3. All advertising materials mentioning features or use of this software
  32  *    must display the following acknowledgement:
  33  *    "This product includes cryptographic software written by
  34  *     Eric Young (eay@cryptsoft.com)"
  35  *    The word 'cryptographic' can be left out if the rouines from the library
  36  *    being used are not cryptographic related :-).
  37  * 4. If you include any Windows specific code (or a derivative thereof) from
  38  *    the apps directory (application code) you must include an acknowledgement:
  39  *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
  40  *
  41  * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
  42  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  43  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  44  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  45  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  46  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  47  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  48  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  49  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  50  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  51  * SUCH DAMAGE.
  52  *
  53  * The licence and distribution terms for any publically available version or
  54  * derivative of this code cannot be changed.  i.e. this code cannot simply be
  55  * copied and put under another distribution licence
  56  * [including the GNU Public Licence.]
  57  */
  58
  59 #include <sys/cdefs.h>
  60 __FBSDID("$FreeBSD$");
  61
  62 #include <sys/types.h>
  63
  64 #include <stdio.h>
  65 #include <string.h>
  66
  67 #if 0
  68 #include <machine/ansi.h>       /* we use the __ variants of bit-sized types */
  69 #endif
  70 #include <machine/endian.h>
  71
  72 #include "rmd_locl.h"
  73
  74 /*
  75  * The assembly-language code is not position-independent, so don't
  76  * try to use it in a shared library.
  77  */
  78 #ifdef PIC
  79 #undef RMD160_ASM
  80 #endif
  81
  82 char *RMD160_version="RIPEMD160 part of SSLeay 0.9.0b 11-Oct-1998";
  83
  84 #ifdef RMD160_ASM
  85 void ripemd160_block_x86(RIPEMD160_CTX *c, const u_int32_t *p,int num);
  86 #define ripemd160_block ripemd160_block_x86
  87 #else
  88 void ripemd160_block(RIPEMD160_CTX *c, const u_int32_t *p,int num);
  89 #endif
  90
  91 void RIPEMD160_Init(c)
  92 RIPEMD160_CTX *c;
  93         {
  94         c->A=RIPEMD160_A;
  95         c->B=RIPEMD160_B;
  96         c->C=RIPEMD160_C;
  97         c->D=RIPEMD160_D;
  98         c->E=RIPEMD160_E;
  99         c->Nl=0;
 100         c->Nh=0;
 101         c->num=0;
 102         }
 103
 104 void RIPEMD160_Update(c, in, len)
 105 RIPEMD160_CTX *c;
 106 const void *in;
 107 size_t len;
 108         {
 109         u_int32_t *p;
 110         int sw,sc;
 111         u_int32_t l;
 112         const unsigned char *data = in;
 113
 114         if (len == 0) return;
 115
 116         l=(c->Nl+(len<<3))&0xffffffffL;
 117         if (l < c->Nl) /* overflow */
 118                 c->Nh++;
 119         c->Nh+=(len>>29);
 120         c->Nl=l;
 121
 122         if (c->num != 0)
 123                 {
 124                 p=c->data;
 125                 sw=c->num>>2;
 126                 sc=c->num&0x03;
 127
 128                 if ((c->num+len) >= RIPEMD160_CBLOCK)
 129                         {
 130                         l= p[sw];
 131                         p_c2l(data,l,sc);
 132                         p[sw++]=l;
 133                         for (; sw<RIPEMD160_LBLOCK; sw++)
 134                                 {
 135                                 c2l(data,l);
 136                                 p[sw]=l;
 137                                 }
 138                         len-=(RIPEMD160_CBLOCK-c->num);
 139
 140                         ripemd160_block(c,p,64);
 141                         c->num=0;
 142                         /* drop through and do the rest */
 143                         }
 144                 else
 145                         {
 146                         int ew,ec;
 147
 148                         c->num+=(int)len;
 149                         if ((sc+len) < 4) /* ugly, add char's to a word */
 150                                 {
 151                                 l= p[sw];
 152                                 p_c2l_p(data,l,sc,len);
 153                                 p[sw]=l;
 154                                 }
 155                         else
 156                                 {
 157                                 ew=(c->num>>2);
 158                                 ec=(c->num&0x03);
 159                                 l= p[sw];
 160                                 p_c2l(data,l,sc);
 161                                 p[sw++]=l;
 162                                 for (; sw < ew; sw++)
 163                                         { c2l(data,l); p[sw]=l; }
 164                                 if (ec)
 165                                         {
 166                                         c2l_p(data,l,ec);
 167                                         p[sw]=l;
 168                                         }
 169                                 }
 170                         return;
 171                         }
 172                 }
 173         /* we now can process the input data in blocks of RIPEMD160_CBLOCK
 174          * chars and save the leftovers to c->data. */
 175 #if BYTE_ORDER == LITTLE_ENDIAN
 176         if ((((unsigned long)data)%sizeof(u_int32_t)) == 0)
 177                 {
 178                 sw=(int)len/RIPEMD160_CBLOCK;
 179                 if (sw > 0)
 180                         {
 181                         sw*=RIPEMD160_CBLOCK;
 182                         ripemd160_block(c,(u_int32_t *)data,sw);
 183                         data+=sw;
 184                         len-=sw;
 185                         }
 186                 }
 187 #endif
 188         p=c->data;
 189         while (len >= RIPEMD160_CBLOCK)
 190                 {
 191 #if BYTE_ORDER == LITTLE_ENDIAN || BYTE_ORDER == BIG_ENDIAN
 192                 if (p != (u_int32_t *)data)
 193                         memcpy(p,data,RIPEMD160_CBLOCK);
 194                 data+=RIPEMD160_CBLOCK;
 195 #if BYTE_ORDER == BIG_ENDIAN
 196                 for (sw=(RIPEMD160_LBLOCK/4); sw; sw--)
 197                         {
 198                         Endian_Reverse32(p[0]);
 199                         Endian_Reverse32(p[1]);
 200                         Endian_Reverse32(p[2]);
 201                         Endian_Reverse32(p[3]);
 202                         p+=4;
 203                         }
 204 #endif
 205 #else
 206                 for (sw=(RIPEMD160_LBLOCK/4); sw; sw--)
 207                         {
 208                         c2l(data,l); *(p++)=l;
 209                         c2l(data,l); *(p++)=l;
 210                         c2l(data,l); *(p++)=l;
 211                         c2l(data,l); *(p++)=l;
 212                         }
 213 #endif
 214                 p=c->data;
 215                 ripemd160_block(c,p,64);
 216                 len-=RIPEMD160_CBLOCK;
 217                 }
 218         sc=(int)len;
 219         c->num=sc;
 220         if (sc)
 221                 {
 222                 sw=sc>>2;       /* words to copy */
 223 #if BYTE_ORDER == LITTLE_ENDIAN
 224                 p[sw]=0;
 225                 memcpy(p,data,sc);
 226 #else
 227                 sc&=0x03;
 228                 for ( ; sw; sw--)
 229                         { c2l(data,l); *(p++)=l; }
 230                 c2l_p(data,l,sc);
 231                 *p=l;
 232 #endif
 233                 }
 234         }
 235
 236 void RIPEMD160_Transform(c,b)
 237 RIPEMD160_CTX *c;
 238 unsigned char *b;
 239         {
 240         u_int32_t p[16];
 241 #if BYTE_ORDER != LITTLE_ENDIAN
 242         u_int32_t *q;
 243         int i;
 244 #endif
 245
 246 #if BYTE_ORDER == BIG_ENDIAN || BYTE_ORDER == LITTLE_ENDIAN
 247         memcpy(p,b,64);
 248 #if BYTE_ORDER == BIG_ENDIAN
 249         q=p;
 250         for (i=(RIPEMD160_LBLOCK/4); i; i--)
 251                 {
 252                 Endian_Reverse32(q[0]);
 253                 Endian_Reverse32(q[1]);
 254                 Endian_Reverse32(q[2]);
 255                 Endian_Reverse32(q[3]);
 256                 q+=4;
 257                 }
 258 #endif
 259 #else
 260         q=p;
 261         for (i=(RIPEMD160_LBLOCK/4); i; i--)
 262                 {
 263                 u_int32_t l;
 264                 c2l(b,l); *(q++)=l;
 265                 c2l(b,l); *(q++)=l;
 266                 c2l(b,l); *(q++)=l;
 267                 c2l(b,l); *(q++)=l;
 268                 }
 269 #endif
 270         ripemd160_block(c,p,64);
 271         }
 272
 273 #ifndef RMD160_ASM
 274
 275 void ripemd160_block(ctx, X, num)
 276 RIPEMD160_CTX *ctx;
 277 const u_int32_t *X;
 278 int num;
 279         {
 280         u_int32_t A,B,C,D,E;
 281         u_int32_t a,b,c,d,e;
 282
 283         for (;;)
 284                 {
 285                 A=ctx->A; B=ctx->B; C=ctx->C; D=ctx->D; E=ctx->E;
 286
 287         RIP1(A,B,C,D,E,WL00,SL00);
 288         RIP1(E,A,B,C,D,WL01,SL01);
 289         RIP1(D,E,A,B,C,WL02,SL02);
 290         RIP1(C,D,E,A,B,WL03,SL03);
 291         RIP1(B,C,D,E,A,WL04,SL04);
 292         RIP1(A,B,C,D,E,WL05,SL05);
 293         RIP1(E,A,B,C,D,WL06,SL06);
 294         RIP1(D,E,A,B,C,WL07,SL07);
 295         RIP1(C,D,E,A,B,WL08,SL08);
 296         RIP1(B,C,D,E,A,WL09,SL09);
 297         RIP1(A,B,C,D,E,WL10,SL10);
 298         RIP1(E,A,B,C,D,WL11,SL11);
 299         RIP1(D,E,A,B,C,WL12,SL12);
 300         RIP1(C,D,E,A,B,WL13,SL13);
 301         RIP1(B,C,D,E,A,WL14,SL14);
 302         RIP1(A,B,C,D,E,WL15,SL15);
 303
 304         RIP2(E,A,B,C,D,WL16,SL16,KL1);
 305         RIP2(D,E,A,B,C,WL17,SL17,KL1);
 306         RIP2(C,D,E,A,B,WL18,SL18,KL1);
 307         RIP2(B,C,D,E,A,WL19,SL19,KL1);
 308         RIP2(A,B,C,D,E,WL20,SL20,KL1);
 309         RIP2(E,A,B,C,D,WL21,SL21,KL1);
 310         RIP2(D,E,A,B,C,WL22,SL22,KL1);
 311         RIP2(C,D,E,A,B,WL23,SL23,KL1);
 312         RIP2(B,C,D,E,A,WL24,SL24,KL1);
 313         RIP2(A,B,C,D,E,WL25,SL25,KL1);
 314         RIP2(E,A,B,C,D,WL26,SL26,KL1);
 315         RIP2(D,E,A,B,C,WL27,SL27,KL1);
 316         RIP2(C,D,E,A,B,WL28,SL28,KL1);
 317         RIP2(B,C,D,E,A,WL29,SL29,KL1);
 318         RIP2(A,B,C,D,E,WL30,SL30,KL1);
 319         RIP2(E,A,B,C,D,WL31,SL31,KL1);
 320
 321         RIP3(D,E,A,B,C,WL32,SL32,KL2);
 322         RIP3(C,D,E,A,B,WL33,SL33,KL2);
 323         RIP3(B,C,D,E,A,WL34,SL34,KL2);
 324         RIP3(A,B,C,D,E,WL35,SL35,KL2);
 325         RIP3(E,A,B,C,D,WL36,SL36,KL2);
 326         RIP3(D,E,A,B,C,WL37,SL37,KL2);
 327         RIP3(C,D,E,A,B,WL38,SL38,KL2);
 328         RIP3(B,C,D,E,A,WL39,SL39,KL2);
 329         RIP3(A,B,C,D,E,WL40,SL40,KL2);
 330         RIP3(E,A,B,C,D,WL41,SL41,KL2);
 331         RIP3(D,E,A,B,C,WL42,SL42,KL2);
 332         RIP3(C,D,E,A,B,WL43,SL43,KL2);
 333         RIP3(B,C,D,E,A,WL44,SL44,KL2);
 334         RIP3(A,B,C,D,E,WL45,SL45,KL2);
 335         RIP3(E,A,B,C,D,WL46,SL46,KL2);
 336         RIP3(D,E,A,B,C,WL47,SL47,KL2);
 337
 338         RIP4(C,D,E,A,B,WL48,SL48,KL3);
 339         RIP4(B,C,D,E,A,WL49,SL49,KL3);
 340         RIP4(A,B,C,D,E,WL50,SL50,KL3);
 341         RIP4(E,A,B,C,D,WL51,SL51,KL3);
 342         RIP4(D,E,A,B,C,WL52,SL52,KL3);
 343         RIP4(C,D,E,A,B,WL53,SL53,KL3);
 344         RIP4(B,C,D,E,A,WL54,SL54,KL3);
 345         RIP4(A,B,C,D,E,WL55,SL55,KL3);
 346         RIP4(E,A,B,C,D,WL56,SL56,KL3);
 347         RIP4(D,E,A,B,C,WL57,SL57,KL3);
 348         RIP4(C,D,E,A,B,WL58,SL58,KL3);
 349         RIP4(B,C,D,E,A,WL59,SL59,KL3);
 350         RIP4(A,B,C,D,E,WL60,SL60,KL3);
 351         RIP4(E,A,B,C,D,WL61,SL61,KL3);
 352         RIP4(D,E,A,B,C,WL62,SL62,KL3);
 353         RIP4(C,D,E,A,B,WL63,SL63,KL3);
 354
 355         RIP5(B,C,D,E,A,WL64,SL64,KL4);
 356         RIP5(A,B,C,D,E,WL65,SL65,KL4);
 357         RIP5(E,A,B,C,D,WL66,SL66,KL4);
 358         RIP5(D,E,A,B,C,WL67,SL67,KL4);
 359         RIP5(C,D,E,A,B,WL68,SL68,KL4);
 360         RIP5(B,C,D,E,A,WL69,SL69,KL4);
 361         RIP5(A,B,C,D,E,WL70,SL70,KL4);
 362         RIP5(E,A,B,C,D,WL71,SL71,KL4);
 363         RIP5(D,E,A,B,C,WL72,SL72,KL4);
 364         RIP5(C,D,E,A,B,WL73,SL73,KL4);
 365         RIP5(B,C,D,E,A,WL74,SL74,KL4);
 366         RIP5(A,B,C,D,E,WL75,SL75,KL4);
 367         RIP5(E,A,B,C,D,WL76,SL76,KL4);
 368         RIP5(D,E,A,B,C,WL77,SL77,KL4);
 369         RIP5(C,D,E,A,B,WL78,SL78,KL4);
 370         RIP5(B,C,D,E,A,WL79,SL79,KL4);
 371
 372         a=A; b=B; c=C; d=D; e=E;
 373         /* Do other half */
 374         A=ctx->A; B=ctx->B; C=ctx->C; D=ctx->D; E=ctx->E;
 375
 376         RIP5(A,B,C,D,E,WR00,SR00,KR0);
 377         RIP5(E,A,B,C,D,WR01,SR01,KR0);
 378         RIP5(D,E,A,B,C,WR02,SR02,KR0);
 379         RIP5(C,D,E,A,B,WR03,SR03,KR0);
 380         RIP5(B,C,D,E,A,WR04,SR04,KR0);
 381         RIP5(A,B,C,D,E,WR05,SR05,KR0);
 382         RIP5(E,A,B,C,D,WR06,SR06,KR0);
 383         RIP5(D,E,A,B,C,WR07,SR07,KR0);
 384         RIP5(C,D,E,A,B,WR08,SR08,KR0);
 385         RIP5(B,C,D,E,A,WR09,SR09,KR0);
 386         RIP5(A,B,C,D,E,WR10,SR10,KR0);
 387         RIP5(E,A,B,C,D,WR11,SR11,KR0);
 388         RIP5(D,E,A,B,C,WR12,SR12,KR0);
 389         RIP5(C,D,E,A,B,WR13,SR13,KR0);
 390         RIP5(B,C,D,E,A,WR14,SR14,KR0);
 391         RIP5(A,B,C,D,E,WR15,SR15,KR0);
 392
 393         RIP4(E,A,B,C,D,WR16,SR16,KR1);
 394         RIP4(D,E,A,B,C,WR17,SR17,KR1);
 395         RIP4(C,D,E,A,B,WR18,SR18,KR1);
 396         RIP4(B,C,D,E,A,WR19,SR19,KR1);
 397         RIP4(A,B,C,D,E,WR20,SR20,KR1);
 398         RIP4(E,A,B,C,D,WR21,SR21,KR1);
 399         RIP4(D,E,A,B,C,WR22,SR22,KR1);
 400         RIP4(C,D,E,A,B,WR23,SR23,KR1);
 401         RIP4(B,C,D,E,A,WR24,SR24,KR1);
 402         RIP4(A,B,C,D,E,WR25,SR25,KR1);
 403         RIP4(E,A,B,C,D,WR26,SR26,KR1);
 404         RIP4(D,E,A,B,C,WR27,SR27,KR1);
 405         RIP4(C,D,E,A,B,WR28,SR28,KR1);
 406         RIP4(B,C,D,E,A,WR29,SR29,KR1);
 407         RIP4(A,B,C,D,E,WR30,SR30,KR1);
 408         RIP4(E,A,B,C,D,WR31,SR31,KR1);
 409
 410         RIP3(D,E,A,B,C,WR32,SR32,KR2);
 411         RIP3(C,D,E,A,B,WR33,SR33,KR2);
 412         RIP3(B,C,D,E,A,WR34,SR34,KR2);
 413         RIP3(A,B,C,D,E,WR35,SR35,KR2);
 414         RIP3(E,A,B,C,D,WR36,SR36,KR2);
 415         RIP3(D,E,A,B,C,WR37,SR37,KR2);
 416         RIP3(C,D,E,A,B,WR38,SR38,KR2);
 417         RIP3(B,C,D,E,A,WR39,SR39,KR2);
 418         RIP3(A,B,C,D,E,WR40,SR40,KR2);
 419         RIP3(E,A,B,C,D,WR41,SR41,KR2);
 420         RIP3(D,E,A,B,C,WR42,SR42,KR2);
 421         RIP3(C,D,E,A,B,WR43,SR43,KR2);
 422         RIP3(B,C,D,E,A,WR44,SR44,KR2);
 423         RIP3(A,B,C,D,E,WR45,SR45,KR2);
 424         RIP3(E,A,B,C,D,WR46,SR46,KR2);
 425         RIP3(D,E,A,B,C,WR47,SR47,KR2);
 426
 427         RIP2(C,D,E,A,B,WR48,SR48,KR3);
 428         RIP2(B,C,D,E,A,WR49,SR49,KR3);
 429         RIP2(A,B,C,D,E,WR50,SR50,KR3);
 430         RIP2(E,A,B,C,D,WR51,SR51,KR3);
 431         RIP2(D,E,A,B,C,WR52,SR52,KR3);
 432         RIP2(C,D,E,A,B,WR53,SR53,KR3);
 433         RIP2(B,C,D,E,A,WR54,SR54,KR3);
 434         RIP2(A,B,C,D,E,WR55,SR55,KR3);
 435         RIP2(E,A,B,C,D,WR56,SR56,KR3);
 436         RIP2(D,E,A,B,C,WR57,SR57,KR3);
 437         RIP2(C,D,E,A,B,WR58,SR58,KR3);
 438         RIP2(B,C,D,E,A,WR59,SR59,KR3);
 439         RIP2(A,B,C,D,E,WR60,SR60,KR3);
 440         RIP2(E,A,B,C,D,WR61,SR61,KR3);
 441         RIP2(D,E,A,B,C,WR62,SR62,KR3);
 442         RIP2(C,D,E,A,B,WR63,SR63,KR3);
 443
 444         RIP1(B,C,D,E,A,WR64,SR64);
 445         RIP1(A,B,C,D,E,WR65,SR65);
 446         RIP1(E,A,B,C,D,WR66,SR66);
 447         RIP1(D,E,A,B,C,WR67,SR67);
 448         RIP1(C,D,E,A,B,WR68,SR68);
 449         RIP1(B,C,D,E,A,WR69,SR69);
 450         RIP1(A,B,C,D,E,WR70,SR70);
 451         RIP1(E,A,B,C,D,WR71,SR71);
 452         RIP1(D,E,A,B,C,WR72,SR72);
 453         RIP1(C,D,E,A,B,WR73,SR73);
 454         RIP1(B,C,D,E,A,WR74,SR74);
 455         RIP1(A,B,C,D,E,WR75,SR75);
 456         RIP1(E,A,B,C,D,WR76,SR76);
 457         RIP1(D,E,A,B,C,WR77,SR77);
 458         RIP1(C,D,E,A,B,WR78,SR78);
 459         RIP1(B,C,D,E,A,WR79,SR79);
 460
 461         D     =ctx->B+c+D;
 462         ctx->B=ctx->C+d+E;
 463         ctx->C=ctx->D+e+A;
 464         ctx->D=ctx->E+a+B;
 465         ctx->E=ctx->A+b+C;
 466         ctx->A=D;
 467
 468         X+=16;
 469         num-=64;
 470         if (num <= 0) break;
 471                 }
 472         }
 473 #endif
 474
 475 void RIPEMD160_Final(md, c)
 476 unsigned char *md;
 477 RIPEMD160_CTX *c;
 478         {
 479         int i,j;
 480         u_int32_t l;
 481         u_int32_t *p;
 482         static unsigned char end[4]={0x80,0x00,0x00,0x00};
 483         unsigned char *cp=end;
 484
 485         /* c->num should definitly have room for at least one more byte. */
 486         p=c->data;
 487         j=c->num;
 488         i=j>>2;
 489
 490         /* purify often complains about the following line as an
 491          * Uninitialized Memory Read.  While this can be true, the
 492          * following p_c2l macro will reset l when that case is true.
 493          * This is because j&0x03 contains the number of 'valid' bytes
 494          * already in p[i].  If and only if j&0x03 == 0, the UMR will
 495          * occur but this is also the only time p_c2l will do
 496          * l= *(cp++) instead of l|= *(cp++)
 497          * Many thanks to Alex Tang <altitude@cic.net> for pickup this
 498          * 'potential bug' */
 499 #ifdef PURIFY
 500         if ((j&0x03) == 0) p[i]=0;
 501 #endif
 502         l=p[i];
 503         p_c2l(cp,l,j&0x03);
 504         p[i]=l;
 505         i++;
 506         /* i is the next 'undefined word' */
 507         if (c->num >= RIPEMD160_LAST_BLOCK)
 508                 {
 509                 for (; i<RIPEMD160_LBLOCK; i++)
 510                         p[i]=0;
 511                 ripemd160_block(c,p,64);
 512                 i=0;
 513                 }
 514         for (; i<(RIPEMD160_LBLOCK-2); i++)
 515                 p[i]=0;
 516         p[RIPEMD160_LBLOCK-2]=c->Nl;
 517         p[RIPEMD160_LBLOCK-1]=c->Nh;
 518         ripemd160_block(c,p,64);
 519         cp=md;
 520         l=c->A; l2c(l,cp);
 521         l=c->B; l2c(l,cp);
 522         l=c->C; l2c(l,cp);
 523         l=c->D; l2c(l,cp);
 524         l=c->E; l2c(l,cp);
 525
 526         /* clear stuff, ripemd160_block may be leaving some stuff on the stack
 527          * but I'm not worried :-) */
 528         c->num=0;
 529 /*      memset((char *)&c,0,sizeof(c));*/
 530         }
 531
 532 #ifdef undef
 533 int printit(l)
 534 unsigned long *l;
 535         {
 536         int i,ii;
 537
 538         for (i=0; i<2; i++)
 539                 {
 540                 for (ii=0; ii<8; ii++)
 541                         {
 542                         fprintf(stderr,"%08lx ",l[i*8+ii]);
 543                         }
 544                 fprintf(stderr,"\n");
 545                 }
 546         }
 547 #endif