315 lines
11 KiB
C
315 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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#include <openssl/opensslv.h>
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char *MD5_version="MD5" OPENSSL_VERSION_PTEXT;
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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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void MD5_Init(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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#ifndef md5_block_host_order
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void md5_block_host_order (MD5_CTX *c, const MD5_LONG *X, int num)
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{
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register unsigned long A,B,C,D;
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/*
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* In case you wonder why A-D are declared as long and not
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* as MD5_LONG. Doing so results in slight performance
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* boost on LP64 architectures. The catch is we don't
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* really care if 32 MSBs of a 64-bit register get polluted
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* with eventual overflows as we *save* only 32 LSBs in
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* *either* case. Now declaring 'em long excuses the compiler
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* from keeping 32 MSBs zeroed resulting in 13% performance
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* improvement under SPARC Solaris7/64 and 5% under AlphaLinux.
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* Well, to be honest it should say that this *prevents*
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* performance degradation.
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*
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* <appro@fy.chalmers.se>
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*/
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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 (;num--;X+=HASH_LBLOCK)
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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 += A;
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B = c->B += B;
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C = c->C += C;
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D = c->D += D;
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}
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}
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#endif
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#ifndef md5_block_data_order
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void md5_block_data_order (MD5_CTX *c, const unsigned char *data, int num)
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{
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register unsigned long A,B,C,D,l;
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/*
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* In case you wonder why A-D are declared as long and not
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* as MD5_LONG. Doing so results in slight performance
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* boost on LP64 architectures. The catch is we don't
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* really care if 32 MSBs of a 64-bit register get polluted
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* with eventual overflows as we *save* only 32 LSBs in
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* *either* case. Now declaring 'em long excuses the compiler
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* from keeping 32 MSBs zeroed resulting in 13% performance
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* improvement under SPARC Solaris7/64 and 5% under AlphaLinux.
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* Well, to be honest it should say that this *prevents*
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* performance degradation.
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*
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* <appro@fy.chalmers.se>
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*/
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MD5_LONG X[MD5_LBLOCK];
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/*
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* In case you wonder why don't I use c->data for this.
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* RISCs usually have a handful of registers and if X is
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* declared as automatic array good optimizing compiler
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* shall accomodate at least part of it in register bank
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* instead of memory.
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*
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* <appro@fy.chalmers.se>
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*/
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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 (;num--;)
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{
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HOST_c2l(data,l); X[ 0]=l; HOST_c2l(data,l); X[ 1]=l;
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/* Round 0 */
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R0(A,B,C,D,X[ 0], 7,0xd76aa478L); HOST_c2l(data,l); X[ 2]=l;
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R0(D,A,B,C,X[ 1],12,0xe8c7b756L); HOST_c2l(data,l); X[ 3]=l;
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R0(C,D,A,B,X[ 2],17,0x242070dbL); HOST_c2l(data,l); X[ 4]=l;
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R0(B,C,D,A,X[ 3],22,0xc1bdceeeL); HOST_c2l(data,l); X[ 5]=l;
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R0(A,B,C,D,X[ 4], 7,0xf57c0fafL); HOST_c2l(data,l); X[ 6]=l;
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R0(D,A,B,C,X[ 5],12,0x4787c62aL); HOST_c2l(data,l); X[ 7]=l;
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R0(C,D,A,B,X[ 6],17,0xa8304613L); HOST_c2l(data,l); X[ 8]=l;
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R0(B,C,D,A,X[ 7],22,0xfd469501L); HOST_c2l(data,l); X[ 9]=l;
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R0(A,B,C,D,X[ 8], 7,0x698098d8L); HOST_c2l(data,l); X[10]=l;
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R0(D,A,B,C,X[ 9],12,0x8b44f7afL); HOST_c2l(data,l); X[11]=l;
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R0(C,D,A,B,X[10],17,0xffff5bb1L); HOST_c2l(data,l); X[12]=l;
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R0(B,C,D,A,X[11],22,0x895cd7beL); HOST_c2l(data,l); X[13]=l;
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R0(A,B,C,D,X[12], 7,0x6b901122L); HOST_c2l(data,l); X[14]=l;
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R0(D,A,B,C,X[13],12,0xfd987193L); HOST_c2l(data,l); X[15]=l;
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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 += A;
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B = c->B += B;
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C = c->C += C;
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D = c->D += D;
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}
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}
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#endif
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#ifdef undef
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int printit(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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