/* $NetBSD: md5_dgst.c,v 1.1.1.1 2009/04/12 15:33:31 christos Exp $ */ /* crypto/md/md5_dgst.c */ /* Copyright (C) 1995-1997 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.] */ #ifdef USE_MD5 /*%< Added by ogud@tis.com 1998/1/26 */ #include #ifndef HAVE_MD5 #include #include "md5_locl.h" #include const char *MD5_version="MD5 part of SSLeay 0.8.1 19-Jul-1997"; /*! \file * \brief * Implemented from RFC1321 The MD5 Message-Digest Algorithm */ #define INIT_DATA_A (unsigned long)0x67452301L #define INIT_DATA_B (unsigned long)0xefcdab89L #define INIT_DATA_C (unsigned long)0x98badcfeL #define INIT_DATA_D (unsigned long)0x10325476L #ifndef NOPROTO static void md5_block(MD5_CTX *c, unsigned long *p); #else static void md5_block(); #endif void MD5_Init(c) MD5_CTX *c; { c->A=INIT_DATA_A; c->B=INIT_DATA_B; c->C=INIT_DATA_C; c->D=INIT_DATA_D; c->Nl=0; c->Nh=0; c->num=0; } void MD5_Update(c, data, len) MD5_CTX *c; register const unsigned char *data; unsigned long len; { register ULONG *p; int sw,sc; ULONG l; if (len == 0U) return; l=(c->Nl+(len<<3))&0xffffffffL; /* 95-05-24 eay Fixed a bug with the overflow handling, thanks to * Wei Dai for pointing it out. */ 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) >= (size_t)MD5_CBLOCK) { l= p[sw]; p_c2l(data,l,sc); p[sw++]=l; for (; swnum); md5_block(c,p); c->num=0; /* drop through and do the rest */ } else { int ew,ec; c->num+=(int)len; if ((sc+len) < 4U) /*%< 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 MD5_CBLOCK * chars and save the leftovers to c->data. */ p=c->data; while (len >= (size_t)MD5_CBLOCK) { #if defined(L_ENDIAN) || defined(B_ENDIAN) memcpy(p,data,MD5_CBLOCK); data+=MD5_CBLOCK; #ifdef B_ENDIAN for (sw=(MD5_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=(MD5_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; md5_block(c,p); len-=MD5_CBLOCK; } sc=(int)len; c->num=sc; if (sc) { sw=sc>>2; /*%< words to copy */ #ifdef L_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 md5_block(c, X) MD5_CTX *c; register ULONG *X; { register ULONG A,B,C,D; A=c->A; B=c->B; C=c->C; D=c->D; /* Round 0 */ R0(A,B,C,D,X[ 0], 7,0xd76aa478L); R0(D,A,B,C,X[ 1],12,0xe8c7b756L); R0(C,D,A,B,X[ 2],17,0x242070dbL); R0(B,C,D,A,X[ 3],22,0xc1bdceeeL); R0(A,B,C,D,X[ 4], 7,0xf57c0fafL); R0(D,A,B,C,X[ 5],12,0x4787c62aL); R0(C,D,A,B,X[ 6],17,0xa8304613L); R0(B,C,D,A,X[ 7],22,0xfd469501L); R0(A,B,C,D,X[ 8], 7,0x698098d8L); R0(D,A,B,C,X[ 9],12,0x8b44f7afL); R0(C,D,A,B,X[10],17,0xffff5bb1L); R0(B,C,D,A,X[11],22,0x895cd7beL); R0(A,B,C,D,X[12], 7,0x6b901122L); R0(D,A,B,C,X[13],12,0xfd987193L); R0(C,D,A,B,X[14],17,0xa679438eL); R0(B,C,D,A,X[15],22,0x49b40821L); /* Round 1 */ R1(A,B,C,D,X[ 1], 5,0xf61e2562L); R1(D,A,B,C,X[ 6], 9,0xc040b340L); R1(C,D,A,B,X[11],14,0x265e5a51L); R1(B,C,D,A,X[ 0],20,0xe9b6c7aaL); R1(A,B,C,D,X[ 5], 5,0xd62f105dL); R1(D,A,B,C,X[10], 9,0x02441453L); R1(C,D,A,B,X[15],14,0xd8a1e681L); R1(B,C,D,A,X[ 4],20,0xe7d3fbc8L); R1(A,B,C,D,X[ 9], 5,0x21e1cde6L); R1(D,A,B,C,X[14], 9,0xc33707d6L); R1(C,D,A,B,X[ 3],14,0xf4d50d87L); R1(B,C,D,A,X[ 8],20,0x455a14edL); R1(A,B,C,D,X[13], 5,0xa9e3e905L); R1(D,A,B,C,X[ 2], 9,0xfcefa3f8L); R1(C,D,A,B,X[ 7],14,0x676f02d9L); R1(B,C,D,A,X[12],20,0x8d2a4c8aL); /* Round 2 */ R2(A,B,C,D,X[ 5], 4,0xfffa3942L); R2(D,A,B,C,X[ 8],11,0x8771f681L); R2(C,D,A,B,X[11],16,0x6d9d6122L); R2(B,C,D,A,X[14],23,0xfde5380cL); R2(A,B,C,D,X[ 1], 4,0xa4beea44L); R2(D,A,B,C,X[ 4],11,0x4bdecfa9L); R2(C,D,A,B,X[ 7],16,0xf6bb4b60L); R2(B,C,D,A,X[10],23,0xbebfbc70L); R2(A,B,C,D,X[13], 4,0x289b7ec6L); R2(D,A,B,C,X[ 0],11,0xeaa127faL); R2(C,D,A,B,X[ 3],16,0xd4ef3085L); R2(B,C,D,A,X[ 6],23,0x04881d05L); R2(A,B,C,D,X[ 9], 4,0xd9d4d039L); R2(D,A,B,C,X[12],11,0xe6db99e5L); R2(C,D,A,B,X[15],16,0x1fa27cf8L); R2(B,C,D,A,X[ 2],23,0xc4ac5665L); /* Round 3 */ R3(A,B,C,D,X[ 0], 6,0xf4292244L); R3(D,A,B,C,X[ 7],10,0x432aff97L); R3(C,D,A,B,X[14],15,0xab9423a7L); R3(B,C,D,A,X[ 5],21,0xfc93a039L); R3(A,B,C,D,X[12], 6,0x655b59c3L); R3(D,A,B,C,X[ 3],10,0x8f0ccc92L); R3(C,D,A,B,X[10],15,0xffeff47dL); R3(B,C,D,A,X[ 1],21,0x85845dd1L); R3(A,B,C,D,X[ 8], 6,0x6fa87e4fL); R3(D,A,B,C,X[15],10,0xfe2ce6e0L); R3(C,D,A,B,X[ 6],15,0xa3014314L); R3(B,C,D,A,X[13],21,0x4e0811a1L); R3(A,B,C,D,X[ 4], 6,0xf7537e82L); R3(D,A,B,C,X[11],10,0xbd3af235L); R3(C,D,A,B,X[ 2],15,0x2ad7d2bbL); R3(B,C,D,A,X[ 9],21,0xeb86d391L); c->A+=A&0xffffffffL; c->B+=B&0xffffffffL; c->C+=C&0xffffffffL; c->D+=D&0xffffffffL; } void MD5_Final(md, c) unsigned char *md; MD5_CTX *c; { register int i,j; register ULONG l; register ULONG *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 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 >= MD5_LAST_BLOCK) { for (; iNl; p[MD5_LBLOCK-1]=c->Nh; md5_block(c,p); 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); /* clear stuff, md5_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 #endif /* HAVE_MD5 */ #endif /* USE_MD5 */