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rmd160c.c

/*----------------------------------------------------------------------------*/
/* Hobbit monitor library.                                                    */
/*                                                                            */
/* This file is part of the Hobbit monitor library, but was taken from the    */
/* FreeBSD sources. It was originally written by Eric Young, and is NOT       */
/* licensed under the GPL. Please adhere the original copyright notice below. */
/*----------------------------------------------------------------------------*/

/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
 * All rights reserved.
 *
 * This package is an SSL implementation written
 * by Eric Young (eay@cryptsoft.com).
 * The implementation was written so as to conform with Netscapes SSL.
 * 
 * This library is free for commercial and non-commercial use as long as
 * the following conditions are aheared to.  The following conditions
 * apply to all code found in this distribution, be it the RC4, RSA,
 * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
 * included with this distribution is covered by the same copyright terms
 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
 * 
 * Copyright remains Eric Young's, and as such any Copyright notices in
 * the code are not to be removed.
 * If this package is used in a product, Eric Young should be given attribution
 * as the author of the parts of the library used.
 * This can be in the form of a textual message at program startup or
 * in documentation (online or textual) provided with the package.
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *    "This product includes cryptographic software written by
 *     Eric Young (eay@cryptsoft.com)"
 *    The word 'cryptographic' can be left out if the rouines from the library
 *    being used are not cryptographic related :-).
 * 4. If you include any Windows specific code (or a derivative thereof) from 
 *    the apps directory (application code) you must include an acknowledgement:
 *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
 * 
 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 * 
 * The licence and distribution terms for any publically available version or
 * derivative of this code cannot be changed.  i.e. this code cannot simply be
 * copied and put under another distribution licence
 * [including the GNU Public Licence.]
 */

#include <sys/types.h>

#include <stdio.h>
#include <string.h>

#include "rmd_locl.h"

/*
 * The assembly-language code is not position-independent, so don't
 * try to use it in a shared library.
 */
#ifdef PIC
#undef RMD160_ASM
#endif

static char *RMD160_version="RIPEMD160 part of SSLeay 0.9.0b 11-Oct-1998";

#ifdef RMD160_ASM
static void ripemd160_block_x86(RIPEMD160_CTX *c, const u_int32_t *p,int num);
#define ripemd160_block ripemd160_block_x86
#else
static void ripemd160_block(RIPEMD160_CTX *c, const u_int32_t *p,int num);
#endif

static void RIPEMD160_Init(c)
RIPEMD160_CTX *c;
      {
      c->A=RIPEMD160_A;
      c->B=RIPEMD160_B;
      c->C=RIPEMD160_C;
      c->D=RIPEMD160_D;
      c->E=RIPEMD160_E;
      c->Nl=0;
      c->Nh=0;
      c->num=0;
      }

static void RIPEMD160_Update(c, in, len)
RIPEMD160_CTX *c;
const void *in;
size_t len;
      {
      u_int32_t *p;
      int sw,sc;
      u_int32_t l;
      const unsigned char *data = in;

      if (len == 0) return;

      l=(c->Nl+(len<<3))&0xffffffffL;
      if (l < c->Nl) /* overflow */
            c->Nh++;
      c->Nh+=(len>>29);
      c->Nl=l;

      if (c->num != 0)
            {
            p=c->data;
            sw=c->num>>2;
            sc=c->num&0x03;

            if ((c->num+len) >= RIPEMD160_CBLOCK)
                  {
                  l= p[sw];
                  p_c2l(data,l,sc);
                  p[sw++]=l;
                  for (; sw<RIPEMD160_LBLOCK; sw++)
                        {
                        c2l(data,l);
                        p[sw]=l;
                        }
                  len-=(RIPEMD160_CBLOCK-c->num);

                  ripemd160_block(c,p,64);
                  c->num=0;
                  /* drop through and do the rest */
                  }
            else
                  {
                  int ew,ec;

                  c->num+=(int)len;
                  if ((sc+len) < 4) /* ugly, add char's to a word */
                        {
                        l= p[sw];
                        p_c2l_p(data,l,sc,len);
                        p[sw]=l;
                        }
                  else
                        {
                        ew=(c->num>>2);
                        ec=(c->num&0x03);
                        l= p[sw];
                        p_c2l(data,l,sc);
                        p[sw++]=l;
                        for (; sw < ew; sw++)
                              { c2l(data,l); p[sw]=l; }
                        if (ec)
                              {
                              c2l_p(data,l,ec);
                              p[sw]=l;
                              }
                        }
                  return;
                  }
            }
      /* we now can process the input data in blocks of RIPEMD160_CBLOCK
       * chars and save the leftovers to c->data. */
#if BYTE_ORDER == LITTLE_ENDIAN
      if ((((unsigned long)data)%sizeof(u_int32_t)) == 0)
            {
            sw=(int)len/RIPEMD160_CBLOCK;
            if (sw > 0)
                  {
                  sw*=RIPEMD160_CBLOCK;
                  ripemd160_block(c,(u_int32_t *)data,sw);
                  data+=sw;
                  len-=sw;
                  }
            }
#endif
      p=c->data;
      while (len >= RIPEMD160_CBLOCK)
            {
#if BYTE_ORDER == LITTLE_ENDIAN || BYTE_ORDER == BIG_ENDIAN
            if (p != (u_int32_t *)data)
                  memcpy(p,data,RIPEMD160_CBLOCK);
            data+=RIPEMD160_CBLOCK;
#if BYTE_ORDER == BIG_ENDIAN
            for (sw=(RIPEMD160_LBLOCK/4); sw; sw--)
                  {
                  Endian_Reverse32(p[0]);
                  Endian_Reverse32(p[1]);
                  Endian_Reverse32(p[2]);
                  Endian_Reverse32(p[3]);
                  p+=4;
                  }
#endif
#else
            for (sw=(RIPEMD160_LBLOCK/4); sw; sw--)
                  {
                  c2l(data,l); *(p++)=l;
                  c2l(data,l); *(p++)=l;
                  c2l(data,l); *(p++)=l;
                  c2l(data,l); *(p++)=l; 
                  } 
#endif
            p=c->data;
            ripemd160_block(c,p,64);
            len-=RIPEMD160_CBLOCK;
            }
      sc=(int)len;
      c->num=sc;
      if (sc)
            {
            sw=sc>>2;   /* words to copy */
#if BYTE_ORDER == LITTLE_ENDIAN
            p[sw]=0;
            memcpy(p,data,sc);
#else
            sc&=0x03;
            for ( ; sw; sw--)
                  { c2l(data,l); *(p++)=l; }
            c2l_p(data,l,sc);
            *p=l;
#endif
            }
      }

static void RIPEMD160_Transform(c,b)
RIPEMD160_CTX *c;
unsigned char *b;
      {
      u_int32_t p[16];
#if BYTE_ORDER != LITTLE_ENDIAN
      u_int32_t *q;
      int i;
#endif

#if BYTE_ORDER == BIG_ENDIAN || BYTE_ORDER == LITTLE_ENDIAN 
      memcpy(p,b,64);
#if BYTE_ORDER == BIG_ENDIAN
      q=p;
      for (i=(RIPEMD160_LBLOCK/4); i; i--)
            {
            Endian_Reverse32(q[0]);
            Endian_Reverse32(q[1]);
            Endian_Reverse32(q[2]);
            Endian_Reverse32(q[3]);
            q+=4;
            }
#endif
#else
      q=p;
      for (i=(RIPEMD160_LBLOCK/4); i; i--)
            {
            u_int32_t l;
            c2l(b,l); *(q++)=l;
            c2l(b,l); *(q++)=l;
            c2l(b,l); *(q++)=l;
            c2l(b,l); *(q++)=l; 
            } 
#endif
      ripemd160_block(c,p,64);
      }

#ifndef RMD160_ASM

static void ripemd160_block(ctx, X, num)
RIPEMD160_CTX *ctx;
const u_int32_t *X;
int num;
      {
      u_int32_t A,B,C,D,E;
      u_int32_t a,b,c,d,e;

      for (;;)
            {
            A=ctx->A; B=ctx->B; C=ctx->C; D=ctx->D; E=ctx->E;

      RIP1(A,B,C,D,E,WL00,SL00);
      RIP1(E,A,B,C,D,WL01,SL01);
      RIP1(D,E,A,B,C,WL02,SL02);
      RIP1(C,D,E,A,B,WL03,SL03);
      RIP1(B,C,D,E,A,WL04,SL04);
      RIP1(A,B,C,D,E,WL05,SL05);
      RIP1(E,A,B,C,D,WL06,SL06);
      RIP1(D,E,A,B,C,WL07,SL07);
      RIP1(C,D,E,A,B,WL08,SL08);
      RIP1(B,C,D,E,A,WL09,SL09);
      RIP1(A,B,C,D,E,WL10,SL10);
      RIP1(E,A,B,C,D,WL11,SL11);
      RIP1(D,E,A,B,C,WL12,SL12);
      RIP1(C,D,E,A,B,WL13,SL13);
      RIP1(B,C,D,E,A,WL14,SL14);
      RIP1(A,B,C,D,E,WL15,SL15);

      RIP2(E,A,B,C,D,WL16,SL16,KL1);
      RIP2(D,E,A,B,C,WL17,SL17,KL1);
      RIP2(C,D,E,A,B,WL18,SL18,KL1);
      RIP2(B,C,D,E,A,WL19,SL19,KL1);
      RIP2(A,B,C,D,E,WL20,SL20,KL1);
      RIP2(E,A,B,C,D,WL21,SL21,KL1);
      RIP2(D,E,A,B,C,WL22,SL22,KL1);
      RIP2(C,D,E,A,B,WL23,SL23,KL1);
      RIP2(B,C,D,E,A,WL24,SL24,KL1);
      RIP2(A,B,C,D,E,WL25,SL25,KL1);
      RIP2(E,A,B,C,D,WL26,SL26,KL1);
      RIP2(D,E,A,B,C,WL27,SL27,KL1);
      RIP2(C,D,E,A,B,WL28,SL28,KL1);
      RIP2(B,C,D,E,A,WL29,SL29,KL1);
      RIP2(A,B,C,D,E,WL30,SL30,KL1);
      RIP2(E,A,B,C,D,WL31,SL31,KL1);

      RIP3(D,E,A,B,C,WL32,SL32,KL2);
      RIP3(C,D,E,A,B,WL33,SL33,KL2);
      RIP3(B,C,D,E,A,WL34,SL34,KL2);
      RIP3(A,B,C,D,E,WL35,SL35,KL2);
      RIP3(E,A,B,C,D,WL36,SL36,KL2);
      RIP3(D,E,A,B,C,WL37,SL37,KL2);
      RIP3(C,D,E,A,B,WL38,SL38,KL2);
      RIP3(B,C,D,E,A,WL39,SL39,KL2);
      RIP3(A,B,C,D,E,WL40,SL40,KL2);
      RIP3(E,A,B,C,D,WL41,SL41,KL2);
      RIP3(D,E,A,B,C,WL42,SL42,KL2);
      RIP3(C,D,E,A,B,WL43,SL43,KL2);
      RIP3(B,C,D,E,A,WL44,SL44,KL2);
      RIP3(A,B,C,D,E,WL45,SL45,KL2);
      RIP3(E,A,B,C,D,WL46,SL46,KL2);
      RIP3(D,E,A,B,C,WL47,SL47,KL2);

      RIP4(C,D,E,A,B,WL48,SL48,KL3);
      RIP4(B,C,D,E,A,WL49,SL49,KL3);
      RIP4(A,B,C,D,E,WL50,SL50,KL3);
      RIP4(E,A,B,C,D,WL51,SL51,KL3);
      RIP4(D,E,A,B,C,WL52,SL52,KL3);
      RIP4(C,D,E,A,B,WL53,SL53,KL3);
      RIP4(B,C,D,E,A,WL54,SL54,KL3);
      RIP4(A,B,C,D,E,WL55,SL55,KL3);
      RIP4(E,A,B,C,D,WL56,SL56,KL3);
      RIP4(D,E,A,B,C,WL57,SL57,KL3);
      RIP4(C,D,E,A,B,WL58,SL58,KL3);
      RIP4(B,C,D,E,A,WL59,SL59,KL3);
      RIP4(A,B,C,D,E,WL60,SL60,KL3);
      RIP4(E,A,B,C,D,WL61,SL61,KL3);
      RIP4(D,E,A,B,C,WL62,SL62,KL3);
      RIP4(C,D,E,A,B,WL63,SL63,KL3);

      RIP5(B,C,D,E,A,WL64,SL64,KL4);
      RIP5(A,B,C,D,E,WL65,SL65,KL4);
      RIP5(E,A,B,C,D,WL66,SL66,KL4);
      RIP5(D,E,A,B,C,WL67,SL67,KL4);
      RIP5(C,D,E,A,B,WL68,SL68,KL4);
      RIP5(B,C,D,E,A,WL69,SL69,KL4);
      RIP5(A,B,C,D,E,WL70,SL70,KL4);
      RIP5(E,A,B,C,D,WL71,SL71,KL4);
      RIP5(D,E,A,B,C,WL72,SL72,KL4);
      RIP5(C,D,E,A,B,WL73,SL73,KL4);
      RIP5(B,C,D,E,A,WL74,SL74,KL4);
      RIP5(A,B,C,D,E,WL75,SL75,KL4);
      RIP5(E,A,B,C,D,WL76,SL76,KL4);
      RIP5(D,E,A,B,C,WL77,SL77,KL4);
      RIP5(C,D,E,A,B,WL78,SL78,KL4);
      RIP5(B,C,D,E,A,WL79,SL79,KL4);

      a=A; b=B; c=C; d=D; e=E;
      /* Do other half */
      A=ctx->A; B=ctx->B; C=ctx->C; D=ctx->D; E=ctx->E;

      RIP5(A,B,C,D,E,WR00,SR00,KR0);
      RIP5(E,A,B,C,D,WR01,SR01,KR0);
      RIP5(D,E,A,B,C,WR02,SR02,KR0);
      RIP5(C,D,E,A,B,WR03,SR03,KR0);
      RIP5(B,C,D,E,A,WR04,SR04,KR0);
      RIP5(A,B,C,D,E,WR05,SR05,KR0);
      RIP5(E,A,B,C,D,WR06,SR06,KR0);
      RIP5(D,E,A,B,C,WR07,SR07,KR0);
      RIP5(C,D,E,A,B,WR08,SR08,KR0);
      RIP5(B,C,D,E,A,WR09,SR09,KR0);
      RIP5(A,B,C,D,E,WR10,SR10,KR0);
      RIP5(E,A,B,C,D,WR11,SR11,KR0);
      RIP5(D,E,A,B,C,WR12,SR12,KR0);
      RIP5(C,D,E,A,B,WR13,SR13,KR0);
      RIP5(B,C,D,E,A,WR14,SR14,KR0);
      RIP5(A,B,C,D,E,WR15,SR15,KR0);

      RIP4(E,A,B,C,D,WR16,SR16,KR1);
      RIP4(D,E,A,B,C,WR17,SR17,KR1);
      RIP4(C,D,E,A,B,WR18,SR18,KR1);
      RIP4(B,C,D,E,A,WR19,SR19,KR1);
      RIP4(A,B,C,D,E,WR20,SR20,KR1);
      RIP4(E,A,B,C,D,WR21,SR21,KR1);
      RIP4(D,E,A,B,C,WR22,SR22,KR1);
      RIP4(C,D,E,A,B,WR23,SR23,KR1);
      RIP4(B,C,D,E,A,WR24,SR24,KR1);
      RIP4(A,B,C,D,E,WR25,SR25,KR1);
      RIP4(E,A,B,C,D,WR26,SR26,KR1);
      RIP4(D,E,A,B,C,WR27,SR27,KR1);
      RIP4(C,D,E,A,B,WR28,SR28,KR1);
      RIP4(B,C,D,E,A,WR29,SR29,KR1);
      RIP4(A,B,C,D,E,WR30,SR30,KR1);
      RIP4(E,A,B,C,D,WR31,SR31,KR1);

      RIP3(D,E,A,B,C,WR32,SR32,KR2);
      RIP3(C,D,E,A,B,WR33,SR33,KR2);
      RIP3(B,C,D,E,A,WR34,SR34,KR2);
      RIP3(A,B,C,D,E,WR35,SR35,KR2);
      RIP3(E,A,B,C,D,WR36,SR36,KR2);
      RIP3(D,E,A,B,C,WR37,SR37,KR2);
      RIP3(C,D,E,A,B,WR38,SR38,KR2);
      RIP3(B,C,D,E,A,WR39,SR39,KR2);
      RIP3(A,B,C,D,E,WR40,SR40,KR2);
      RIP3(E,A,B,C,D,WR41,SR41,KR2);
      RIP3(D,E,A,B,C,WR42,SR42,KR2);
      RIP3(C,D,E,A,B,WR43,SR43,KR2);
      RIP3(B,C,D,E,A,WR44,SR44,KR2);
      RIP3(A,B,C,D,E,WR45,SR45,KR2);
      RIP3(E,A,B,C,D,WR46,SR46,KR2);
      RIP3(D,E,A,B,C,WR47,SR47,KR2);

      RIP2(C,D,E,A,B,WR48,SR48,KR3);
      RIP2(B,C,D,E,A,WR49,SR49,KR3);
      RIP2(A,B,C,D,E,WR50,SR50,KR3);
      RIP2(E,A,B,C,D,WR51,SR51,KR3);
      RIP2(D,E,A,B,C,WR52,SR52,KR3);
      RIP2(C,D,E,A,B,WR53,SR53,KR3);
      RIP2(B,C,D,E,A,WR54,SR54,KR3);
      RIP2(A,B,C,D,E,WR55,SR55,KR3);
      RIP2(E,A,B,C,D,WR56,SR56,KR3);
      RIP2(D,E,A,B,C,WR57,SR57,KR3);
      RIP2(C,D,E,A,B,WR58,SR58,KR3);
      RIP2(B,C,D,E,A,WR59,SR59,KR3);
      RIP2(A,B,C,D,E,WR60,SR60,KR3);
      RIP2(E,A,B,C,D,WR61,SR61,KR3);
      RIP2(D,E,A,B,C,WR62,SR62,KR3);
      RIP2(C,D,E,A,B,WR63,SR63,KR3);

      RIP1(B,C,D,E,A,WR64,SR64);
      RIP1(A,B,C,D,E,WR65,SR65);
      RIP1(E,A,B,C,D,WR66,SR66);
      RIP1(D,E,A,B,C,WR67,SR67);
      RIP1(C,D,E,A,B,WR68,SR68);
      RIP1(B,C,D,E,A,WR69,SR69);
      RIP1(A,B,C,D,E,WR70,SR70);
      RIP1(E,A,B,C,D,WR71,SR71);
      RIP1(D,E,A,B,C,WR72,SR72);
      RIP1(C,D,E,A,B,WR73,SR73);
      RIP1(B,C,D,E,A,WR74,SR74);
      RIP1(A,B,C,D,E,WR75,SR75);
      RIP1(E,A,B,C,D,WR76,SR76);
      RIP1(D,E,A,B,C,WR77,SR77);
      RIP1(C,D,E,A,B,WR78,SR78);
      RIP1(B,C,D,E,A,WR79,SR79);

      D     =ctx->B+c+D;
      ctx->B=ctx->C+d+E;
      ctx->C=ctx->D+e+A;
      ctx->D=ctx->E+a+B;
      ctx->E=ctx->A+b+C;
      ctx->A=D;

      X+=16;
      num-=64;
      if (num <= 0) break;
            }
      }
#endif

static void RIPEMD160_Final(md, c)
unsigned char *md;
RIPEMD160_CTX *c;
      {
      int i,j;
      u_int32_t l;
      u_int32_t *p;
      static unsigned char end[4]={0x80,0x00,0x00,0x00};
      unsigned char *cp=end;

      /* c->num should definitly have room for at least one more byte. */
      p=c->data;
      j=c->num;
      i=j>>2;

      /* purify often complains about the following line as an
       * Uninitialized Memory Read.  While this can be true, the
       * following p_c2l macro will reset l when that case is true.
       * This is because j&0x03 contains the number of 'valid' bytes
       * already in p[i].  If and only if j&0x03 == 0, the UMR will
       * occur but this is also the only time p_c2l will do
       * l= *(cp++) instead of l|= *(cp++)
       * Many thanks to Alex Tang <altitude@cic.net> for pickup this
       * 'potential bug' */
#ifdef PURIFY
      if ((j&0x03) == 0) p[i]=0;
#endif
      l=p[i];
      p_c2l(cp,l,j&0x03);
      p[i]=l;
      i++;
      /* i is the next 'undefined word' */
      if (c->num >= RIPEMD160_LAST_BLOCK)
            {
            for (; i<RIPEMD160_LBLOCK; i++)
                  p[i]=0;
            ripemd160_block(c,p,64);
            i=0;
            }
      for (; i<(RIPEMD160_LBLOCK-2); i++)
            p[i]=0;
      p[RIPEMD160_LBLOCK-2]=c->Nl;
      p[RIPEMD160_LBLOCK-1]=c->Nh;
      ripemd160_block(c,p,64);
      cp=md;
      l=c->A; l2c(l,cp);
      l=c->B; l2c(l,cp);
      l=c->C; l2c(l,cp);
      l=c->D; l2c(l,cp);
      l=c->E; l2c(l,cp);

      /* clear stuff, ripemd160_block may be leaving some stuff on the stack
       * but I'm not worried :-) */
      c->num=0;
/*    memset((char *)&c,0,sizeof(c));*/
      }

#ifdef undef
int printit(l)
unsigned long *l;
      {
      int i,ii;

      for (i=0; i<2; i++)
            {
            for (ii=0; ii<8; ii++)
                  {
                  fprintf(stderr,"%08lx ",l[i*8+ii]);
                  }
            fprintf(stderr,"\n");
            }
      }
#endif

/* Added for Hobbit - not part of the original file */
int  myRIPEMD160_Size(void) { return sizeof(RIPEMD160_CTX); }
void myRIPEMD160_Init(void *c) { RIPEMD160_Init((RIPEMD160_CTX *)c); }
void myRIPEMD160_Update(void *c, unsigned char *in, int len) {RIPEMD160_Update((RIPEMD160_CTX *)c, in, len); }
void myRIPEMD160_Final(char md[20], void *c) { RIPEMD160_Final(md, (RIPEMD160_CTX *)c); }

#ifdef STANDALONE
#include <unistd.h>
#include <stdlib.h>
int main(int argc, char *argv[])
{
      FILE *fd;
      unsigned char buf[8192];
      int buflen, i;
      unsigned char md[20];
      char md_string[41];
      char *p;

      void *c;

      fd = fopen(argv[1], "r");
      if (fd == NULL) return 1;

      c = (void *)malloc(myRIPEMD160_Size());
      myRIPEMD160_Init(c);
      while ((buflen = fread(buf, 1, sizeof(buf), fd)) > 0) myRIPEMD160_Update(c, buf, buflen);
      fclose(fd);
      myRIPEMD160_Final(md, c);

      for(i = 0, p = md_string; (i < sizeof(md)); i++) p += sprintf(p, "%02x", md[i]);
      *p = '\0';
      printf("%s\n", md_string);

      return 0;
}
#endif


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