9cb0969f65
1. The already released version was 0.9.1c and not 0.9.1b 2. The next release should be 0.9.2 and not 0.9.1d, because first the changes are already too large, second we should avoid any more 0.9.1x confusions and third, the Apache version semantics of VERSION.REVISION.PATCHLEVEL for the version string is reasonable (and here .2 is already just a patchlevel and not major change). tVS: ----------------------------------------------------------------------
440 lines
11 KiB
C
440 lines
11 KiB
C
/* crypto/md5/md5_dgst.c */
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/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
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* All rights reserved.
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*
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* This package is an SSL implementation written
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* by Eric Young (eay@cryptsoft.com).
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* The implementation was written so as to conform with Netscapes SSL.
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*
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* This library is free for commercial and non-commercial use as long as
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* the following conditions are aheared to. The following conditions
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* apply to all code found in this distribution, be it the RC4, RSA,
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* lhash, DES, etc., code; not just the SSL code. The SSL documentation
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* included with this distribution is covered by the same copyright terms
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* except that the holder is Tim Hudson (tjh@cryptsoft.com).
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*
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* Copyright remains Eric Young's, and as such any Copyright notices in
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* the code are not to be removed.
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* If this package is used in a product, Eric Young should be given attribution
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* as the author of the parts of the library used.
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* This can be in the form of a textual message at program startup or
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* in documentation (online or textual) provided with the package.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* "This product includes cryptographic software written by
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* Eric Young (eay@cryptsoft.com)"
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* The word 'cryptographic' can be left out if the rouines from the library
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* being used are not cryptographic related :-).
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* 4. If you include any Windows specific code (or a derivative thereof) from
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* the apps directory (application code) you must include an acknowledgement:
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* "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
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*
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* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* The licence and distribution terms for any publically available version or
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* derivative of this code cannot be changed. i.e. this code cannot simply be
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* copied and put under another distribution licence
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* [including the GNU Public Licence.]
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*/
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#include <stdio.h>
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#include "md5_locl.h"
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char *MD5_version="MD5 part of OpenSSL 0.9.2 31-Dec-1998";
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/* Implemented from RFC1321 The MD5 Message-Digest Algorithm
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*/
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#define INIT_DATA_A (unsigned long)0x67452301L
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#define INIT_DATA_B (unsigned long)0xefcdab89L
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#define INIT_DATA_C (unsigned long)0x98badcfeL
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#define INIT_DATA_D (unsigned long)0x10325476L
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#ifndef NOPROTO
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# ifdef MD5_ASM
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void md5_block_x86(MD5_CTX *c, unsigned long *p,int num);
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# define md5_block md5_block_x86
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# else
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static void md5_block(MD5_CTX *c, unsigned long *p,int num);
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# endif
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#else
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# ifdef MD5_ASM
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void md5_block_x86();
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# define md5_block md5_block_x86
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# else
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static void md5_block();
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# endif
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#endif
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void MD5_Init(c)
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MD5_CTX *c;
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{
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c->A=INIT_DATA_A;
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c->B=INIT_DATA_B;
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c->C=INIT_DATA_C;
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c->D=INIT_DATA_D;
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c->Nl=0;
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c->Nh=0;
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c->num=0;
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}
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void MD5_Update(c, data, len)
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MD5_CTX *c;
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register unsigned char *data;
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unsigned long len;
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{
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register ULONG *p;
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int sw,sc;
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ULONG l;
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if (len == 0) return;
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l=(c->Nl+(len<<3))&0xffffffffL;
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/* 95-05-24 eay Fixed a bug with the overflow handling, thanks to
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* Wei Dai <weidai@eskimo.com> for pointing it out. */
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if (l < c->Nl) /* overflow */
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c->Nh++;
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c->Nh+=(len>>29);
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c->Nl=l;
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if (c->num != 0)
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{
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p=c->data;
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sw=c->num>>2;
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sc=c->num&0x03;
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if ((c->num+len) >= MD5_CBLOCK)
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{
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l= p[sw];
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p_c2l(data,l,sc);
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p[sw++]=l;
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for (; sw<MD5_LBLOCK; sw++)
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{
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c2l(data,l);
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p[sw]=l;
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}
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len-=(MD5_CBLOCK-c->num);
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md5_block(c,p,64);
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c->num=0;
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/* drop through and do the rest */
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}
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else
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{
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int ew,ec;
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c->num+=(int)len;
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if ((sc+len) < 4) /* ugly, add char's to a word */
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{
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l= p[sw];
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p_c2l_p(data,l,sc,len);
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p[sw]=l;
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}
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else
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{
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ew=(c->num>>2);
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ec=(c->num&0x03);
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l= p[sw];
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p_c2l(data,l,sc);
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p[sw++]=l;
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for (; sw < ew; sw++)
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{ c2l(data,l); p[sw]=l; }
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if (ec)
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{
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c2l_p(data,l,ec);
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p[sw]=l;
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}
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}
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return;
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}
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}
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/* we now can process the input data in blocks of MD5_CBLOCK
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* chars and save the leftovers to c->data. */
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#ifdef L_ENDIAN
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if ((((unsigned long)data)%sizeof(ULONG)) == 0)
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{
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sw=(int)len/MD5_CBLOCK;
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if (sw > 0)
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{
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sw*=MD5_CBLOCK;
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md5_block(c,(ULONG *)data,sw);
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data+=sw;
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len-=sw;
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}
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}
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#endif
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p=c->data;
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while (len >= MD5_CBLOCK)
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{
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#if defined(L_ENDIAN) || defined(B_ENDIAN)
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if (p != (unsigned long *)data)
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memcpy(p,data,MD5_CBLOCK);
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data+=MD5_CBLOCK;
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#ifdef B_ENDIAN
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for (sw=(MD5_LBLOCK/4); sw; sw--)
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{
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Endian_Reverse32(p[0]);
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Endian_Reverse32(p[1]);
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Endian_Reverse32(p[2]);
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Endian_Reverse32(p[3]);
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p+=4;
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}
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#endif
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#else
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for (sw=(MD5_LBLOCK/4); sw; sw--)
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{
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c2l(data,l); *(p++)=l;
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c2l(data,l); *(p++)=l;
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c2l(data,l); *(p++)=l;
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c2l(data,l); *(p++)=l;
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}
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#endif
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p=c->data;
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md5_block(c,p,64);
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len-=MD5_CBLOCK;
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}
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sc=(int)len;
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c->num=sc;
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if (sc)
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{
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sw=sc>>2; /* words to copy */
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#ifdef L_ENDIAN
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p[sw]=0;
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memcpy(p,data,sc);
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#else
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sc&=0x03;
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for ( ; sw; sw--)
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{ c2l(data,l); *(p++)=l; }
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c2l_p(data,l,sc);
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*p=l;
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#endif
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}
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}
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void MD5_Transform(c,b)
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MD5_CTX *c;
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unsigned char *b;
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{
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ULONG p[16];
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#if !defined(L_ENDIAN)
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ULONG *q;
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int i;
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#endif
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#if defined(B_ENDIAN) || defined(L_ENDIAN)
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memcpy(p,b,64);
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#ifdef B_ENDIAN
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q=p;
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for (i=(MD5_LBLOCK/4); i; i--)
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{
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Endian_Reverse32(q[0]);
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Endian_Reverse32(q[1]);
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Endian_Reverse32(q[2]);
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Endian_Reverse32(q[3]);
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q+=4;
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}
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#endif
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#else
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q=p;
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for (i=(MD5_LBLOCK/4); i; i--)
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{
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ULONG l;
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c2l(b,l); *(q++)=l;
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c2l(b,l); *(q++)=l;
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c2l(b,l); *(q++)=l;
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c2l(b,l); *(q++)=l;
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}
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#endif
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md5_block(c,p,64);
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}
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#ifndef MD5_ASM
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static void md5_block(c, X, num)
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MD5_CTX *c;
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register ULONG *X;
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int num;
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{
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register ULONG A,B,C,D;
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A=c->A;
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B=c->B;
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C=c->C;
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D=c->D;
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for (;;)
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{
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/* Round 0 */
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R0(A,B,C,D,X[ 0], 7,0xd76aa478L);
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R0(D,A,B,C,X[ 1],12,0xe8c7b756L);
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R0(C,D,A,B,X[ 2],17,0x242070dbL);
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R0(B,C,D,A,X[ 3],22,0xc1bdceeeL);
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R0(A,B,C,D,X[ 4], 7,0xf57c0fafL);
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R0(D,A,B,C,X[ 5],12,0x4787c62aL);
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R0(C,D,A,B,X[ 6],17,0xa8304613L);
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R0(B,C,D,A,X[ 7],22,0xfd469501L);
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R0(A,B,C,D,X[ 8], 7,0x698098d8L);
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R0(D,A,B,C,X[ 9],12,0x8b44f7afL);
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R0(C,D,A,B,X[10],17,0xffff5bb1L);
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R0(B,C,D,A,X[11],22,0x895cd7beL);
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R0(A,B,C,D,X[12], 7,0x6b901122L);
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R0(D,A,B,C,X[13],12,0xfd987193L);
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R0(C,D,A,B,X[14],17,0xa679438eL);
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R0(B,C,D,A,X[15],22,0x49b40821L);
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/* Round 1 */
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R1(A,B,C,D,X[ 1], 5,0xf61e2562L);
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R1(D,A,B,C,X[ 6], 9,0xc040b340L);
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R1(C,D,A,B,X[11],14,0x265e5a51L);
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R1(B,C,D,A,X[ 0],20,0xe9b6c7aaL);
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R1(A,B,C,D,X[ 5], 5,0xd62f105dL);
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R1(D,A,B,C,X[10], 9,0x02441453L);
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R1(C,D,A,B,X[15],14,0xd8a1e681L);
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R1(B,C,D,A,X[ 4],20,0xe7d3fbc8L);
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R1(A,B,C,D,X[ 9], 5,0x21e1cde6L);
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R1(D,A,B,C,X[14], 9,0xc33707d6L);
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R1(C,D,A,B,X[ 3],14,0xf4d50d87L);
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R1(B,C,D,A,X[ 8],20,0x455a14edL);
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R1(A,B,C,D,X[13], 5,0xa9e3e905L);
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R1(D,A,B,C,X[ 2], 9,0xfcefa3f8L);
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R1(C,D,A,B,X[ 7],14,0x676f02d9L);
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R1(B,C,D,A,X[12],20,0x8d2a4c8aL);
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/* Round 2 */
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R2(A,B,C,D,X[ 5], 4,0xfffa3942L);
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R2(D,A,B,C,X[ 8],11,0x8771f681L);
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R2(C,D,A,B,X[11],16,0x6d9d6122L);
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R2(B,C,D,A,X[14],23,0xfde5380cL);
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R2(A,B,C,D,X[ 1], 4,0xa4beea44L);
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R2(D,A,B,C,X[ 4],11,0x4bdecfa9L);
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R2(C,D,A,B,X[ 7],16,0xf6bb4b60L);
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R2(B,C,D,A,X[10],23,0xbebfbc70L);
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R2(A,B,C,D,X[13], 4,0x289b7ec6L);
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R2(D,A,B,C,X[ 0],11,0xeaa127faL);
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R2(C,D,A,B,X[ 3],16,0xd4ef3085L);
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R2(B,C,D,A,X[ 6],23,0x04881d05L);
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R2(A,B,C,D,X[ 9], 4,0xd9d4d039L);
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R2(D,A,B,C,X[12],11,0xe6db99e5L);
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R2(C,D,A,B,X[15],16,0x1fa27cf8L);
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R2(B,C,D,A,X[ 2],23,0xc4ac5665L);
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/* Round 3 */
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R3(A,B,C,D,X[ 0], 6,0xf4292244L);
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R3(D,A,B,C,X[ 7],10,0x432aff97L);
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R3(C,D,A,B,X[14],15,0xab9423a7L);
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R3(B,C,D,A,X[ 5],21,0xfc93a039L);
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R3(A,B,C,D,X[12], 6,0x655b59c3L);
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R3(D,A,B,C,X[ 3],10,0x8f0ccc92L);
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R3(C,D,A,B,X[10],15,0xffeff47dL);
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R3(B,C,D,A,X[ 1],21,0x85845dd1L);
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R3(A,B,C,D,X[ 8], 6,0x6fa87e4fL);
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R3(D,A,B,C,X[15],10,0xfe2ce6e0L);
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R3(C,D,A,B,X[ 6],15,0xa3014314L);
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R3(B,C,D,A,X[13],21,0x4e0811a1L);
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R3(A,B,C,D,X[ 4], 6,0xf7537e82L);
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R3(D,A,B,C,X[11],10,0xbd3af235L);
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R3(C,D,A,B,X[ 2],15,0x2ad7d2bbL);
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R3(B,C,D,A,X[ 9],21,0xeb86d391L);
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A+=c->A&0xffffffffL;
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B+=c->B&0xffffffffL;
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c->A=A;
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c->B=B;
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C+=c->C&0xffffffffL;
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D+=c->D&0xffffffffL;
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c->C=C;
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c->D=D;
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X+=16;
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num-=64;
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if (num <= 0) break;
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}
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}
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#endif
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void MD5_Final(md, c)
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unsigned char *md;
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MD5_CTX *c;
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{
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register int i,j;
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register ULONG l;
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register ULONG *p;
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static unsigned char end[4]={0x80,0x00,0x00,0x00};
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unsigned char *cp=end;
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/* c->num should definitly have room for at least one more byte. */
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p=c->data;
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j=c->num;
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i=j>>2;
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/* purify often complains about the following line as an
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* Uninitialized Memory Read. While this can be true, the
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* following p_c2l macro will reset l when that case is true.
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* This is because j&0x03 contains the number of 'valid' bytes
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* already in p[i]. If and only if j&0x03 == 0, the UMR will
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* occur but this is also the only time p_c2l will do
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* l= *(cp++) instead of l|= *(cp++)
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* Many thanks to Alex Tang <altitude@cic.net> for pickup this
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* 'potential bug' */
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#ifdef PURIFY
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if ((j&0x03) == 0) p[i]=0;
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#endif
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l=p[i];
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p_c2l(cp,l,j&0x03);
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p[i]=l;
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i++;
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/* i is the next 'undefined word' */
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if (c->num >= MD5_LAST_BLOCK)
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{
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for (; i<MD5_LBLOCK; i++)
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p[i]=0;
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md5_block(c,p,64);
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i=0;
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}
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for (; i<(MD5_LBLOCK-2); i++)
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p[i]=0;
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p[MD5_LBLOCK-2]=c->Nl;
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p[MD5_LBLOCK-1]=c->Nh;
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md5_block(c,p,64);
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cp=md;
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l=c->A; l2c(l,cp);
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l=c->B; l2c(l,cp);
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l=c->C; l2c(l,cp);
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l=c->D; l2c(l,cp);
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/* clear stuff, md5_block may be leaving some stuff on the stack
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* but I'm not worried :-) */
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c->num=0;
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/* memset((char *)&c,0,sizeof(c));*/
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}
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#ifdef undef
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int printit(l)
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unsigned long *l;
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{
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int i,ii;
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for (i=0; i<2; i++)
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{
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for (ii=0; ii<8; ii++)
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{
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fprintf(stderr,"%08lx ",l[i*8+ii]);
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}
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fprintf(stderr,"\n");
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}
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}
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#endif
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