File:  [DragonFly] / src / lib / libmd / rmd160c.c
Revision 1.2: download - view: text, annotated - select for diffs
Tue Jun 17 04:26:50 2003 UTC (11 years, 2 months ago) by dillon
Branches: MAIN
CVS tags: HEAD
Add the DragonFly cvs id and perform general cleanups on cvs/rcs/sccs ids.  Most
ids have been removed from !lint sections and moved into comment sections.

    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:  * $FreeBSD: src/lib/libmd/rmd160c.c,v 1.4 1999/08/28 00:05:07 peter Exp $
   59:  * $DragonFly: src/lib/libmd/rmd160c.c,v 1.2 2003/06/17 04:26:50 dillon Exp $
   60:  */
   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, data, len)
  105: RIPEMD160_CTX *c;
  106: const unsigned char *data;
  107: size_t len;
  108: 	{
  109: 	register u_int32_t *p;
  110: 	int sw,sc;
  111: 	u_int32_t l;
  112: 
  113: 	if (len == 0) return;
  114: 
  115: 	l=(c->Nl+(len<<3))&0xffffffffL;
  116: 	if (l < c->Nl) /* overflow */
  117: 		c->Nh++;
  118: 	c->Nh+=(len>>29);
  119: 	c->Nl=l;
  120: 
  121: 	if (c->num != 0)
  122: 		{
  123: 		p=c->data;
  124: 		sw=c->num>>2;
  125: 		sc=c->num&0x03;
  126: 
  127: 		if ((c->num+len) >= RIPEMD160_CBLOCK)
  128: 			{
  129: 			l= p[sw];
  130: 			p_c2l(data,l,sc);
  131: 			p[sw++]=l;
  132: 			for (; sw<RIPEMD160_LBLOCK; sw++)
  133: 				{
  134: 				c2l(data,l);
  135: 				p[sw]=l;
  136: 				}
  137: 			len-=(RIPEMD160_CBLOCK-c->num);
  138: 
  139: 			ripemd160_block(c,p,64);
  140: 			c->num=0;
  141: 			/* drop through and do the rest */
  142: 			}
  143: 		else
  144: 			{
  145: 			int ew,ec;
  146: 
  147: 			c->num+=(int)len;
  148: 			if ((sc+len) < 4) /* ugly, add char's to a word */
  149: 				{
  150: 				l= p[sw];
  151: 				p_c2l_p(data,l,sc,len);
  152: 				p[sw]=l;
  153: 				}
  154: 			else
  155: 				{
  156: 				ew=(c->num>>2);
  157: 				ec=(c->num&0x03);
  158: 				l= p[sw];
  159: 				p_c2l(data,l,sc);
  160: 				p[sw++]=l;
  161: 				for (; sw < ew; sw++)
  162: 					{ c2l(data,l); p[sw]=l; }
  163: 				if (ec)
  164: 					{
  165: 					c2l_p(data,l,ec);
  166: 					p[sw]=l;
  167: 					}
  168: 				}
  169: 			return;
  170: 			}
  171: 		}
  172: 	/* we now can process the input data in blocks of RIPEMD160_CBLOCK
  173: 	 * chars and save the leftovers to c->data. */
  174: #if BYTE_ORDER == LITTLE_ENDIAN
  175: 	if ((((unsigned long)data)%sizeof(u_int32_t)) == 0)
  176: 		{
  177: 		sw=(int)len/RIPEMD160_CBLOCK;
  178: 		if (sw > 0)
  179: 			{
  180: 			sw*=RIPEMD160_CBLOCK;
  181: 			ripemd160_block(c,(u_int32_t *)data,sw);
  182: 			data+=sw;
  183: 			len-=sw;
  184: 			}
  185: 		}
  186: #endif
  187: 	p=c->data;
  188: 	while (len >= RIPEMD160_CBLOCK)
  189: 		{
  190: #if BYTE_ORDER == LITTLE_ENDIAN || BYTE_ORDER == BIG_ENDIAN
  191: 		if (p != (u_int32_t *)data)
  192: 			memcpy(p,data,RIPEMD160_CBLOCK);
  193: 		data+=RIPEMD160_CBLOCK;
  194: #if BYTE_ORDER == BIG_ENDIAN
  195: 		for (sw=(RIPEMD160_LBLOCK/4); sw; sw--)
  196: 			{
  197: 			Endian_Reverse32(p[0]);
  198: 			Endian_Reverse32(p[1]);
  199: 			Endian_Reverse32(p[2]);
  200: 			Endian_Reverse32(p[3]);
  201: 			p+=4;
  202: 			}
  203: #endif
  204: #else
  205: 		for (sw=(RIPEMD160_LBLOCK/4); sw; sw--)
  206: 			{
  207: 			c2l(data,l); *(p++)=l;
  208: 			c2l(data,l); *(p++)=l;
  209: 			c2l(data,l); *(p++)=l;
  210: 			c2l(data,l); *(p++)=l; 
  211: 			} 
  212: #endif
  213: 		p=c->data;
  214: 		ripemd160_block(c,p,64);
  215: 		len-=RIPEMD160_CBLOCK;
  216: 		}
  217: 	sc=(int)len;
  218: 	c->num=sc;
  219: 	if (sc)
  220: 		{
  221: 		sw=sc>>2;	/* words to copy */
  222: #if BYTE_ORDER == LITTLE_ENDIAN
  223: 		p[sw]=0;
  224: 		memcpy(p,data,sc);
  225: #else
  226: 		sc&=0x03;
  227: 		for ( ; sw; sw--)
  228: 			{ c2l(data,l); *(p++)=l; }
  229: 		c2l_p(data,l,sc);
  230: 		*p=l;
  231: #endif
  232: 		}
  233: 	}
  234: 
  235: void RIPEMD160_Transform(c,b)
  236: RIPEMD160_CTX *c;
  237: unsigned char *b;
  238: 	{
  239: 	u_int32_t p[16];
  240: #if BYTE_ORDER != LITTLE_ENDIAN
  241: 	u_int32_t *q;
  242: 	int i;
  243: #endif
  244: 
  245: #if BYTE_ORDER == BIG_ENDIAN || BYTE_ORDER == LITTLE_ENDIAN 
  246: 	memcpy(p,b,64);
  247: #if BYTE_ORDER == BIG_ENDIAN
  248: 	q=p;
  249: 	for (i=(RIPEMD160_LBLOCK/4); i; i--)
  250: 		{
  251: 		Endian_Reverse32(q[0]);
  252: 		Endian_Reverse32(q[1]);
  253: 		Endian_Reverse32(q[2]);
  254: 		Endian_Reverse32(q[3]);
  255: 		q+=4;
  256: 		}
  257: #endif
  258: #else
  259: 	q=p;
  260: 	for (i=(RIPEMD160_LBLOCK/4); i; i--)
  261: 		{
  262: 		u_int32_t l;
  263: 		c2l(b,l); *(q++)=l;
  264: 		c2l(b,l); *(q++)=l;
  265: 		c2l(b,l); *(q++)=l;
  266: 		c2l(b,l); *(q++)=l; 
  267: 		} 
  268: #endif
  269: 	ripemd160_block(c,p,64);
  270: 	}
  271: 
  272: #ifndef RMD160_ASM
  273: 
  274: void ripemd160_block(ctx, X, num)
  275: RIPEMD160_CTX *ctx;
  276: const u_int32_t *X;
  277: int num;
  278: 	{
  279: 	register u_int32_t A,B,C,D,E;
  280: 	u_int32_t a,b,c,d,e;
  281: 
  282: 	for (;;)
  283: 		{
  284: 		A=ctx->A; B=ctx->B; C=ctx->C; D=ctx->D; E=ctx->E;
  285: 
  286: 	RIP1(A,B,C,D,E,WL00,SL00);
  287: 	RIP1(E,A,B,C,D,WL01,SL01);
  288: 	RIP1(D,E,A,B,C,WL02,SL02);
  289: 	RIP1(C,D,E,A,B,WL03,SL03);
  290: 	RIP1(B,C,D,E,A,WL04,SL04);
  291: 	RIP1(A,B,C,D,E,WL05,SL05);
  292: 	RIP1(E,A,B,C,D,WL06,SL06);
  293: 	RIP1(D,E,A,B,C,WL07,SL07);
  294: 	RIP1(C,D,E,A,B,WL08,SL08);
  295: 	RIP1(B,C,D,E,A,WL09,SL09);
  296: 	RIP1(A,B,C,D,E,WL10,SL10);
  297: 	RIP1(E,A,B,C,D,WL11,SL11);
  298: 	RIP1(D,E,A,B,C,WL12,SL12);
  299: 	RIP1(C,D,E,A,B,WL13,SL13);
  300: 	RIP1(B,C,D,E,A,WL14,SL14);
  301: 	RIP1(A,B,C,D,E,WL15,SL15);
  302: 
  303: 	RIP2(E,A,B,C,D,WL16,SL16,KL1);
  304: 	RIP2(D,E,A,B,C,WL17,SL17,KL1);
  305: 	RIP2(C,D,E,A,B,WL18,SL18,KL1);
  306: 	RIP2(B,C,D,E,A,WL19,SL19,KL1);
  307: 	RIP2(A,B,C,D,E,WL20,SL20,KL1);
  308: 	RIP2(E,A,B,C,D,WL21,SL21,KL1);
  309: 	RIP2(D,E,A,B,C,WL22,SL22,KL1);
  310: 	RIP2(C,D,E,A,B,WL23,SL23,KL1);
  311: 	RIP2(B,C,D,E,A,WL24,SL24,KL1);
  312: 	RIP2(A,B,C,D,E,WL25,SL25,KL1);
  313: 	RIP2(E,A,B,C,D,WL26,SL26,KL1);
  314: 	RIP2(D,E,A,B,C,WL27,SL27,KL1);
  315: 	RIP2(C,D,E,A,B,WL28,SL28,KL1);
  316: 	RIP2(B,C,D,E,A,WL29,SL29,KL1);
  317: 	RIP2(A,B,C,D,E,WL30,SL30,KL1);
  318: 	RIP2(E,A,B,C,D,WL31,SL31,KL1);
  319: 
  320: 	RIP3(D,E,A,B,C,WL32,SL32,KL2);
  321: 	RIP3(C,D,E,A,B,WL33,SL33,KL2);
  322: 	RIP3(B,C,D,E,A,WL34,SL34,KL2);
  323: 	RIP3(A,B,C,D,E,WL35,SL35,KL2);
  324: 	RIP3(E,A,B,C,D,WL36,SL36,KL2);
  325: 	RIP3(D,E,A,B,C,WL37,SL37,KL2);
  326: 	RIP3(C,D,E,A,B,WL38,SL38,KL2);
  327: 	RIP3(B,C,D,E,A,WL39,SL39,KL2);
  328: 	RIP3(A,B,C,D,E,WL40,SL40,KL2);
  329: 	RIP3(E,A,B,C,D,WL41,SL41,KL2);
  330: 	RIP3(D,E,A,B,C,WL42,SL42,KL2);
  331: 	RIP3(C,D,E,A,B,WL43,SL43,KL2);
  332: 	RIP3(B,C,D,E,A,WL44,SL44,KL2);
  333: 	RIP3(A,B,C,D,E,WL45,SL45,KL2);
  334: 	RIP3(E,A,B,C,D,WL46,SL46,KL2);
  335: 	RIP3(D,E,A,B,C,WL47,SL47,KL2);
  336: 
  337: 	RIP4(C,D,E,A,B,WL48,SL48,KL3);
  338: 	RIP4(B,C,D,E,A,WL49,SL49,KL3);
  339: 	RIP4(A,B,C,D,E,WL50,SL50,KL3);
  340: 	RIP4(E,A,B,C,D,WL51,SL51,KL3);
  341: 	RIP4(D,E,A,B,C,WL52,SL52,KL3);
  342: 	RIP4(C,D,E,A,B,WL53,SL53,KL3);
  343: 	RIP4(B,C,D,E,A,WL54,SL54,KL3);
  344: 	RIP4(A,B,C,D,E,WL55,SL55,KL3);
  345: 	RIP4(E,A,B,C,D,WL56,SL56,KL3);
  346: 	RIP4(D,E,A,B,C,WL57,SL57,KL3);
  347: 	RIP4(C,D,E,A,B,WL58,SL58,KL3);
  348: 	RIP4(B,C,D,E,A,WL59,SL59,KL3);
  349: 	RIP4(A,B,C,D,E,WL60,SL60,KL3);
  350: 	RIP4(E,A,B,C,D,WL61,SL61,KL3);
  351: 	RIP4(D,E,A,B,C,WL62,SL62,KL3);
  352: 	RIP4(C,D,E,A,B,WL63,SL63,KL3);
  353: 
  354: 	RIP5(B,C,D,E,A,WL64,SL64,KL4);
  355: 	RIP5(A,B,C,D,E,WL65,SL65,KL4);
  356: 	RIP5(E,A,B,C,D,WL66,SL66,KL4);
  357: 	RIP5(D,E,A,B,C,WL67,SL67,KL4);
  358: 	RIP5(C,D,E,A,B,WL68,SL68,KL4);
  359: 	RIP5(B,C,D,E,A,WL69,SL69,KL4);
  360: 	RIP5(A,B,C,D,E,WL70,SL70,KL4);
  361: 	RIP5(E,A,B,C,D,WL71,SL71,KL4);
  362: 	RIP5(D,E,A,B,C,WL72,SL72,KL4);
  363: 	RIP5(C,D,E,A,B,WL73,SL73,KL4);
  364: 	RIP5(B,C,D,E,A,WL74,SL74,KL4);
  365: 	RIP5(A,B,C,D,E,WL75,SL75,KL4);
  366: 	RIP5(E,A,B,C,D,WL76,SL76,KL4);
  367: 	RIP5(D,E,A,B,C,WL77,SL77,KL4);
  368: 	RIP5(C,D,E,A,B,WL78,SL78,KL4);
  369: 	RIP5(B,C,D,E,A,WL79,SL79,KL4);
  370: 
  371: 	a=A; b=B; c=C; d=D; e=E;
  372: 	/* Do other half */
  373: 	A=ctx->A; B=ctx->B; C=ctx->C; D=ctx->D; E=ctx->E;
  374: 
  375: 	RIP5(A,B,C,D,E,WR00,SR00,KR0);
  376: 	RIP5(E,A,B,C,D,WR01,SR01,KR0);
  377: 	RIP5(D,E,A,B,C,WR02,SR02,KR0);
  378: 	RIP5(C,D,E,A,B,WR03,SR03,KR0);
  379: 	RIP5(B,C,D,E,A,WR04,SR04,KR0);
  380: 	RIP5(A,B,C,D,E,WR05,SR05,KR0);
  381: 	RIP5(E,A,B,C,D,WR06,SR06,KR0);
  382: 	RIP5(D,E,A,B,C,WR07,SR07,KR0);
  383: 	RIP5(C,D,E,A,B,WR08,SR08,KR0);
  384: 	RIP5(B,C,D,E,A,WR09,SR09,KR0);
  385: 	RIP5(A,B,C,D,E,WR10,SR10,KR0);
  386: 	RIP5(E,A,B,C,D,WR11,SR11,KR0);
  387: 	RIP5(D,E,A,B,C,WR12,SR12,KR0);
  388: 	RIP5(C,D,E,A,B,WR13,SR13,KR0);
  389: 	RIP5(B,C,D,E,A,WR14,SR14,KR0);
  390: 	RIP5(A,B,C,D,E,WR15,SR15,KR0);
  391: 
  392: 	RIP4(E,A,B,C,D,WR16,SR16,KR1);
  393: 	RIP4(D,E,A,B,C,WR17,SR17,KR1);
  394: 	RIP4(C,D,E,A,B,WR18,SR18,KR1);
  395: 	RIP4(B,C,D,E,A,WR19,SR19,KR1);
  396: 	RIP4(A,B,C,D,E,WR20,SR20,KR1);
  397: 	RIP4(E,A,B,C,D,WR21,SR21,KR1);
  398: 	RIP4(D,E,A,B,C,WR22,SR22,KR1);
  399: 	RIP4(C,D,E,A,B,WR23,SR23,KR1);
  400: 	RIP4(B,C,D,E,A,WR24,SR24,KR1);
  401: 	RIP4(A,B,C,D,E,WR25,SR25,KR1);
  402: 	RIP4(E,A,B,C,D,WR26,SR26,KR1);
  403: 	RIP4(D,E,A,B,C,WR27,SR27,KR1);
  404: 	RIP4(C,D,E,A,B,WR28,SR28,KR1);
  405: 	RIP4(B,C,D,E,A,WR29,SR29,KR1);
  406: 	RIP4(A,B,C,D,E,WR30,SR30,KR1);
  407: 	RIP4(E,A,B,C,D,WR31,SR31,KR1);
  408: 
  409: 	RIP3(D,E,A,B,C,WR32,SR32,KR2);
  410: 	RIP3(C,D,E,A,B,WR33,SR33,KR2);
  411: 	RIP3(B,C,D,E,A,WR34,SR34,KR2);
  412: 	RIP3(A,B,C,D,E,WR35,SR35,KR2);
  413: 	RIP3(E,A,B,C,D,WR36,SR36,KR2);
  414: 	RIP3(D,E,A,B,C,WR37,SR37,KR2);
  415: 	RIP3(C,D,E,A,B,WR38,SR38,KR2);
  416: 	RIP3(B,C,D,E,A,WR39,SR39,KR2);
  417: 	RIP3(A,B,C,D,E,WR40,SR40,KR2);
  418: 	RIP3(E,A,B,C,D,WR41,SR41,KR2);
  419: 	RIP3(D,E,A,B,C,WR42,SR42,KR2);
  420: 	RIP3(C,D,E,A,B,WR43,SR43,KR2);
  421: 	RIP3(B,C,D,E,A,WR44,SR44,KR2);
  422: 	RIP3(A,B,C,D,E,WR45,SR45,KR2);
  423: 	RIP3(E,A,B,C,D,WR46,SR46,KR2);
  424: 	RIP3(D,E,A,B,C,WR47,SR47,KR2);
  425: 
  426: 	RIP2(C,D,E,A,B,WR48,SR48,KR3);
  427: 	RIP2(B,C,D,E,A,WR49,SR49,KR3);
  428: 	RIP2(A,B,C,D,E,WR50,SR50,KR3);
  429: 	RIP2(E,A,B,C,D,WR51,SR51,KR3);
  430: 	RIP2(D,E,A,B,C,WR52,SR52,KR3);
  431: 	RIP2(C,D,E,A,B,WR53,SR53,KR3);
  432: 	RIP2(B,C,D,E,A,WR54,SR54,KR3);
  433: 	RIP2(A,B,C,D,E,WR55,SR55,KR3);
  434: 	RIP2(E,A,B,C,D,WR56,SR56,KR3);
  435: 	RIP2(D,E,A,B,C,WR57,SR57,KR3);
  436: 	RIP2(C,D,E,A,B,WR58,SR58,KR3);
  437: 	RIP2(B,C,D,E,A,WR59,SR59,KR3);
  438: 	RIP2(A,B,C,D,E,WR60,SR60,KR3);
  439: 	RIP2(E,A,B,C,D,WR61,SR61,KR3);
  440: 	RIP2(D,E,A,B,C,WR62,SR62,KR3);
  441: 	RIP2(C,D,E,A,B,WR63,SR63,KR3);
  442: 
  443: 	RIP1(B,C,D,E,A,WR64,SR64);
  444: 	RIP1(A,B,C,D,E,WR65,SR65);
  445: 	RIP1(E,A,B,C,D,WR66,SR66);
  446: 	RIP1(D,E,A,B,C,WR67,SR67);
  447: 	RIP1(C,D,E,A,B,WR68,SR68);
  448: 	RIP1(B,C,D,E,A,WR69,SR69);
  449: 	RIP1(A,B,C,D,E,WR70,SR70);
  450: 	RIP1(E,A,B,C,D,WR71,SR71);
  451: 	RIP1(D,E,A,B,C,WR72,SR72);
  452: 	RIP1(C,D,E,A,B,WR73,SR73);
  453: 	RIP1(B,C,D,E,A,WR74,SR74);
  454: 	RIP1(A,B,C,D,E,WR75,SR75);
  455: 	RIP1(E,A,B,C,D,WR76,SR76);
  456: 	RIP1(D,E,A,B,C,WR77,SR77);
  457: 	RIP1(C,D,E,A,B,WR78,SR78);
  458: 	RIP1(B,C,D,E,A,WR79,SR79);
  459: 
  460: 	D     =ctx->B+c+D;
  461: 	ctx->B=ctx->C+d+E;
  462: 	ctx->C=ctx->D+e+A;
  463: 	ctx->D=ctx->E+a+B;
  464: 	ctx->E=ctx->A+b+C;
  465: 	ctx->A=D;
  466: 
  467: 	X+=16;
  468: 	num-=64;
  469: 	if (num <= 0) break;
  470: 		}
  471: 	}
  472: #endif
  473: 
  474: void RIPEMD160_Final(md, c)
  475: unsigned char *md;
  476: RIPEMD160_CTX *c;
  477: 	{
  478: 	register int i,j;
  479: 	register u_int32_t l;
  480: 	register u_int32_t *p;
  481: 	static unsigned char end[4]={0x80,0x00,0x00,0x00};
  482: 	unsigned char *cp=end;
  483: 
  484: 	/* c->num should definitly have room for at least one more byte. */
  485: 	p=c->data;
  486: 	j=c->num;
  487: 	i=j>>2;
  488: 
  489: 	/* purify often complains about the following line as an
  490: 	 * Uninitialized Memory Read.  While this can be true, the
  491: 	 * following p_c2l macro will reset l when that case is true.
  492: 	 * This is because j&0x03 contains the number of 'valid' bytes
  493: 	 * already in p[i].  If and only if j&0x03 == 0, the UMR will
  494: 	 * occur but this is also the only time p_c2l will do
  495: 	 * l= *(cp++) instead of l|= *(cp++)
  496: 	 * Many thanks to Alex Tang <altitude@cic.net> for pickup this
  497: 	 * 'potential bug' */
  498: #ifdef PURIFY
  499: 	if ((j&0x03) == 0) p[i]=0;
  500: #endif
  501: 	l=p[i];
  502: 	p_c2l(cp,l,j&0x03);
  503: 	p[i]=l;
  504: 	i++;
  505: 	/* i is the next 'undefined word' */
  506: 	if (c->num >= RIPEMD160_LAST_BLOCK)
  507: 		{
  508: 		for (; i<RIPEMD160_LBLOCK; i++)
  509: 			p[i]=0;
  510: 		ripemd160_block(c,p,64);
  511: 		i=0;
  512: 		}
  513: 	for (; i<(RIPEMD160_LBLOCK-2); i++)
  514: 		p[i]=0;
  515: 	p[RIPEMD160_LBLOCK-2]=c->Nl;
  516: 	p[RIPEMD160_LBLOCK-1]=c->Nh;
  517: 	ripemd160_block(c,p,64);
  518: 	cp=md;
  519: 	l=c->A; l2c(l,cp);
  520: 	l=c->B; l2c(l,cp);
  521: 	l=c->C; l2c(l,cp);
  522: 	l=c->D; l2c(l,cp);
  523: 	l=c->E; l2c(l,cp);
  524: 
  525: 	/* clear stuff, ripemd160_block may be leaving some stuff on the stack
  526: 	 * but I'm not worried :-) */
  527: 	c->num=0;
  528: /*	memset((char *)&c,0,sizeof(c));*/
  529: 	}
  530: 
  531: #ifdef undef
  532: int printit(l)
  533: unsigned long *l;
  534: 	{
  535: 	int i,ii;
  536: 
  537: 	for (i=0; i<2; i++)
  538: 		{
  539: 		for (ii=0; ii<8; ii++)
  540: 			{
  541: 			fprintf(stderr,"%08lx ",l[i*8+ii]);
  542: 			}
  543: 		fprintf(stderr,"\n");
  544: 		}
  545: 	}
  546: #endif