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matty |
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/* crypto/sha/sha1dgst.c */ |
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/* Copyright (C) 1995-1997 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 <string.h> |
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#undef SHA_0 |
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#define SHA_1 |
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#include "sha.h" |
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#include "sha_locl.h" |
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/* char *SHA1_version="SHA1 part of SSLeay 0.8.2b 08-Jan-1998"; */ |
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/* Implemented from SHA-1 document - The Secure Hash Algorithm |
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*/ |
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#define INIT_DATA_h0 (unsigned long)0x67452301L |
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#define INIT_DATA_h1 (unsigned long)0xefcdab89L |
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#define INIT_DATA_h2 (unsigned long)0x98badcfeL |
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#define INIT_DATA_h3 (unsigned long)0x10325476L |
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#define INIT_DATA_h4 (unsigned long)0xc3d2e1f0L |
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#define K_00_19 0x5a827999L |
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#define K_20_39 0x6ed9eba1L |
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#define K_40_59 0x8f1bbcdcL |
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#define K_60_79 0xca62c1d6L |
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#ifndef NOPROTO |
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# ifdef SHA1_ASM |
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void sha1_block_x86(SHA_CTX *c, register unsigned long *p, int num); |
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# define sha1_block sha1_block_x86 |
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# else |
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void sha1_block(SHA_CTX *c, register unsigned long *p, int num); |
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# endif |
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#else |
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# ifdef SHA1_ASM |
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void sha1_block_x86(); |
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# define sha1_block sha1_block_x86 |
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# else |
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void sha1_block(); |
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# endif |
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#endif |
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#if defined(L_ENDIAN) && defined(SHA1_ASM) |
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# define M_c2nl c2l |
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# define M_p_c2nl p_c2l |
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# define M_c2nl_p c2l_p |
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# define M_p_c2nl_p p_c2l_p |
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# define M_nl2c l2c |
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#else |
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# define M_c2nl c2nl |
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# define M_p_c2nl p_c2nl |
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# define M_c2nl_p c2nl_p |
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# define M_p_c2nl_p p_c2nl_p |
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# define M_nl2c nl2c |
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#endif |
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void SHA1_Init(c) |
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SHA_CTX *c; |
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{ |
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c->h0=INIT_DATA_h0; |
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c->h1=INIT_DATA_h1; |
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c->h2=INIT_DATA_h2; |
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c->h3=INIT_DATA_h3; |
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c->h4=INIT_DATA_h4; |
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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 SHA1_Update(c, data, len) |
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SHA_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 ew,ec,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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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) >= SHA_CBLOCK) |
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{ |
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l= p[sw]; |
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M_p_c2nl(data,l,sc); |
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p[sw++]=l; |
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for (; sw<SHA_LBLOCK; sw++) |
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{ |
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M_c2nl(data,l); |
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p[sw]=l; |
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} |
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len-=(SHA_CBLOCK-c->num); |
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sha1_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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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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M_p_c2nl_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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M_p_c2nl(data,l,sc); |
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p[sw++]=l; |
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for (; sw < ew; sw++) |
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{ M_c2nl(data,l); p[sw]=l; } |
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if (ec) |
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{ |
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M_c2nl_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 can only do the following code for assember, the reason |
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* being that the sha1_block 'C' version changes the values |
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* in the 'data' array. The assember code avoids this and |
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* copies it to a local array. I should be able to do this for |
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* the C version as well.... |
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*/ |
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#if 1 |
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#if defined(B_ENDIAN) || defined(SHA1_ASM) |
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if ((((unsigned int)data)%sizeof(ULONG)) == 0) |
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{ |
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sw=len/SHA_CBLOCK; |
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if (sw) |
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{ |
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sw*=SHA_CBLOCK; |
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sha1_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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#endif |
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/* we now can process the input data in blocks of SHA_CBLOCK |
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* chars and save the leftovers to c->data. */ |
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p=c->data; |
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while (len >= SHA_CBLOCK) |
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{ |
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#if defined(B_ENDIAN) || defined(L_ENDIAN) |
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if (p != (unsigned long *)data) |
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memcpy(p,data,SHA_CBLOCK); |
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data+=SHA_CBLOCK; |
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# ifdef L_ENDIAN |
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# ifndef SHA1_ASM /* Will not happen */ |
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for (sw=(SHA_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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p=c->data; |
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# endif |
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# endif |
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#else |
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for (sw=(SHA_BLOCK/4); sw; sw--) |
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{ |
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M_c2nl(data,l); *(p++)=l; |
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M_c2nl(data,l); *(p++)=l; |
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M_c2nl(data,l); *(p++)=l; |
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M_c2nl(data,l); *(p++)=l; |
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} |
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p=c->data; |
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#endif |
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sha1_block(c,p,64); |
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len-=SHA_CBLOCK; |
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} |
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ec=(int)len; |
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c->num=ec; |
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ew=(ec>>2); |
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ec&=0x03; |
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for (sw=0; sw < ew; sw++) |
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{ M_c2nl(data,l); p[sw]=l; } |
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M_c2nl_p(data,l,ec); |
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p[sw]=l; |
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} |
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void SHA1_Transform(c,b) |
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SHA_CTX *c; |
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unsigned char *b; |
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{ |
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ULONG p[16]; |
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#ifndef B_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 L_ENDIAN |
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q=p; |
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for (i=(SHA_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=(SHA_LBLOCK/4); i; i--) |
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{ |
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ULONG l; |
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c2nl(b,l); *(q++)=l; |
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c2nl(b,l); *(q++)=l; |
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c2nl(b,l); *(q++)=l; |
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c2nl(b,l); *(q++)=l; |
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} |
| 291 |
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#endif |
| 292 |
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sha1_block(c,p,64); |
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} |
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#ifndef SHA1_ASM |
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| 297 |
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void sha1_block(c, W, num) |
| 298 |
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SHA_CTX *c; |
| 299 |
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register unsigned long *W; |
| 300 |
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int num; |
| 301 |
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{ |
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register ULONG A,B,C,D,E,T; |
| 303 |
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ULONG X[16]; |
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A=c->h0; |
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B=c->h1; |
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C=c->h2; |
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D=c->h3; |
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E=c->h4; |
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| 311 |
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for (;;) |
| 312 |
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{ |
| 313 |
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BODY_00_15( 0,A,B,C,D,E,T,W); |
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BODY_00_15( 1,T,A,B,C,D,E,W); |
| 315 |
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BODY_00_15( 2,E,T,A,B,C,D,W); |
| 316 |
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BODY_00_15( 3,D,E,T,A,B,C,W); |
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BODY_00_15( 4,C,D,E,T,A,B,W); |
| 318 |
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BODY_00_15( 5,B,C,D,E,T,A,W); |
| 319 |
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BODY_00_15( 6,A,B,C,D,E,T,W); |
| 320 |
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BODY_00_15( 7,T,A,B,C,D,E,W); |
| 321 |
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BODY_00_15( 8,E,T,A,B,C,D,W); |
| 322 |
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BODY_00_15( 9,D,E,T,A,B,C,W); |
| 323 |
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BODY_00_15(10,C,D,E,T,A,B,W); |
| 324 |
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BODY_00_15(11,B,C,D,E,T,A,W); |
| 325 |
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BODY_00_15(12,A,B,C,D,E,T,W); |
| 326 |
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BODY_00_15(13,T,A,B,C,D,E,W); |
| 327 |
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BODY_00_15(14,E,T,A,B,C,D,W); |
| 328 |
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BODY_00_15(15,D,E,T,A,B,C,W); |
| 329 |
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BODY_16_19(16,C,D,E,T,A,B,W,W,W,W); |
| 330 |
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BODY_16_19(17,B,C,D,E,T,A,W,W,W,W); |
| 331 |
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BODY_16_19(18,A,B,C,D,E,T,W,W,W,W); |
| 332 |
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BODY_16_19(19,T,A,B,C,D,E,W,W,W,X); |
| 333 |
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| 334 |
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BODY_20_31(20,E,T,A,B,C,D,W,W,W,X); |
| 335 |
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BODY_20_31(21,D,E,T,A,B,C,W,W,W,X); |
| 336 |
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BODY_20_31(22,C,D,E,T,A,B,W,W,W,X); |
| 337 |
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BODY_20_31(23,B,C,D,E,T,A,W,W,W,X); |
| 338 |
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BODY_20_31(24,A,B,C,D,E,T,W,W,X,X); |
| 339 |
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BODY_20_31(25,T,A,B,C,D,E,W,W,X,X); |
| 340 |
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BODY_20_31(26,E,T,A,B,C,D,W,W,X,X); |
| 341 |
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BODY_20_31(27,D,E,T,A,B,C,W,W,X,X); |
| 342 |
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BODY_20_31(28,C,D,E,T,A,B,W,W,X,X); |
| 343 |
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BODY_20_31(29,B,C,D,E,T,A,W,W,X,X); |
| 344 |
|
|
BODY_20_31(30,A,B,C,D,E,T,W,X,X,X); |
| 345 |
|
|
BODY_20_31(31,T,A,B,C,D,E,W,X,X,X); |
| 346 |
|
|
BODY_32_39(32,E,T,A,B,C,D,X); |
| 347 |
|
|
BODY_32_39(33,D,E,T,A,B,C,X); |
| 348 |
|
|
BODY_32_39(34,C,D,E,T,A,B,X); |
| 349 |
|
|
BODY_32_39(35,B,C,D,E,T,A,X); |
| 350 |
|
|
BODY_32_39(36,A,B,C,D,E,T,X); |
| 351 |
|
|
BODY_32_39(37,T,A,B,C,D,E,X); |
| 352 |
|
|
BODY_32_39(38,E,T,A,B,C,D,X); |
| 353 |
|
|
BODY_32_39(39,D,E,T,A,B,C,X); |
| 354 |
|
|
|
| 355 |
|
|
BODY_40_59(40,C,D,E,T,A,B,X); |
| 356 |
|
|
BODY_40_59(41,B,C,D,E,T,A,X); |
| 357 |
|
|
BODY_40_59(42,A,B,C,D,E,T,X); |
| 358 |
|
|
BODY_40_59(43,T,A,B,C,D,E,X); |
| 359 |
|
|
BODY_40_59(44,E,T,A,B,C,D,X); |
| 360 |
|
|
BODY_40_59(45,D,E,T,A,B,C,X); |
| 361 |
|
|
BODY_40_59(46,C,D,E,T,A,B,X); |
| 362 |
|
|
BODY_40_59(47,B,C,D,E,T,A,X); |
| 363 |
|
|
BODY_40_59(48,A,B,C,D,E,T,X); |
| 364 |
|
|
BODY_40_59(49,T,A,B,C,D,E,X); |
| 365 |
|
|
BODY_40_59(50,E,T,A,B,C,D,X); |
| 366 |
|
|
BODY_40_59(51,D,E,T,A,B,C,X); |
| 367 |
|
|
BODY_40_59(52,C,D,E,T,A,B,X); |
| 368 |
|
|
BODY_40_59(53,B,C,D,E,T,A,X); |
| 369 |
|
|
BODY_40_59(54,A,B,C,D,E,T,X); |
| 370 |
|
|
BODY_40_59(55,T,A,B,C,D,E,X); |
| 371 |
|
|
BODY_40_59(56,E,T,A,B,C,D,X); |
| 372 |
|
|
BODY_40_59(57,D,E,T,A,B,C,X); |
| 373 |
|
|
BODY_40_59(58,C,D,E,T,A,B,X); |
| 374 |
|
|
BODY_40_59(59,B,C,D,E,T,A,X); |
| 375 |
|
|
|
| 376 |
|
|
BODY_60_79(60,A,B,C,D,E,T,X); |
| 377 |
|
|
BODY_60_79(61,T,A,B,C,D,E,X); |
| 378 |
|
|
BODY_60_79(62,E,T,A,B,C,D,X); |
| 379 |
|
|
BODY_60_79(63,D,E,T,A,B,C,X); |
| 380 |
|
|
BODY_60_79(64,C,D,E,T,A,B,X); |
| 381 |
|
|
BODY_60_79(65,B,C,D,E,T,A,X); |
| 382 |
|
|
BODY_60_79(66,A,B,C,D,E,T,X); |
| 383 |
|
|
BODY_60_79(67,T,A,B,C,D,E,X); |
| 384 |
|
|
BODY_60_79(68,E,T,A,B,C,D,X); |
| 385 |
|
|
BODY_60_79(69,D,E,T,A,B,C,X); |
| 386 |
|
|
BODY_60_79(70,C,D,E,T,A,B,X); |
| 387 |
|
|
BODY_60_79(71,B,C,D,E,T,A,X); |
| 388 |
|
|
BODY_60_79(72,A,B,C,D,E,T,X); |
| 389 |
|
|
BODY_60_79(73,T,A,B,C,D,E,X); |
| 390 |
|
|
BODY_60_79(74,E,T,A,B,C,D,X); |
| 391 |
|
|
BODY_60_79(75,D,E,T,A,B,C,X); |
| 392 |
|
|
BODY_60_79(76,C,D,E,T,A,B,X); |
| 393 |
|
|
BODY_60_79(77,B,C,D,E,T,A,X); |
| 394 |
|
|
BODY_60_79(78,A,B,C,D,E,T,X); |
| 395 |
|
|
BODY_60_79(79,T,A,B,C,D,E,X); |
| 396 |
|
|
|
| 397 |
|
|
c->h0=(c->h0+E)&0xffffffffL; |
| 398 |
|
|
c->h1=(c->h1+T)&0xffffffffL; |
| 399 |
|
|
c->h2=(c->h2+A)&0xffffffffL; |
| 400 |
|
|
c->h3=(c->h3+B)&0xffffffffL; |
| 401 |
|
|
c->h4=(c->h4+C)&0xffffffffL; |
| 402 |
|
|
|
| 403 |
|
|
num-=64; |
| 404 |
|
|
if (num <= 0) break; |
| 405 |
|
|
|
| 406 |
|
|
A=c->h0; |
| 407 |
|
|
B=c->h1; |
| 408 |
|
|
C=c->h2; |
| 409 |
|
|
D=c->h3; |
| 410 |
|
|
E=c->h4; |
| 411 |
|
|
|
| 412 |
|
|
W+=16; |
| 413 |
|
|
} |
| 414 |
|
|
} |
| 415 |
|
|
#endif |
| 416 |
|
|
|
| 417 |
|
|
void SHA1_Final(md, c) |
| 418 |
|
|
unsigned char *md; |
| 419 |
|
|
SHA_CTX *c; |
| 420 |
|
|
{ |
| 421 |
|
|
register int i,j; |
| 422 |
|
|
register ULONG l; |
| 423 |
|
|
register ULONG *p; |
| 424 |
|
|
static unsigned char end[4]={0x80,0x00,0x00,0x00}; |
| 425 |
|
|
unsigned char *cp=end; |
| 426 |
|
|
|
| 427 |
|
|
/* c->num should definitly have room for at least one more byte. */ |
| 428 |
|
|
p=c->data; |
| 429 |
|
|
j=c->num; |
| 430 |
|
|
i=j>>2; |
| 431 |
|
|
#ifdef PURIFY |
| 432 |
|
|
if ((j&0x03) == 0) p[i]=0; |
| 433 |
|
|
#endif |
| 434 |
|
|
l=p[i]; |
| 435 |
|
|
M_p_c2nl(cp,l,j&0x03); |
| 436 |
|
|
p[i]=l; |
| 437 |
|
|
i++; |
| 438 |
|
|
/* i is the next 'undefined word' */ |
| 439 |
|
|
if (c->num >= SHA_LAST_BLOCK) |
| 440 |
|
|
{ |
| 441 |
|
|
for (; i<SHA_LBLOCK; i++) |
| 442 |
|
|
p[i]=0; |
| 443 |
|
|
sha1_block(c,p,64); |
| 444 |
|
|
i=0; |
| 445 |
|
|
} |
| 446 |
|
|
for (; i<(SHA_LBLOCK-2); i++) |
| 447 |
|
|
p[i]=0; |
| 448 |
|
|
p[SHA_LBLOCK-2]=c->Nh; |
| 449 |
|
|
p[SHA_LBLOCK-1]=c->Nl; |
| 450 |
|
|
#if defined(L_ENDIAN) && defined(SHA1_ASM) |
| 451 |
|
|
Endian_Reverse32(p[SHA_LBLOCK-2]); |
| 452 |
|
|
Endian_Reverse32(p[SHA_LBLOCK-1]); |
| 453 |
|
|
#endif |
| 454 |
|
|
sha1_block(c,p,64); |
| 455 |
|
|
cp=md; |
| 456 |
|
|
l=c->h0; nl2c(l,cp); |
| 457 |
|
|
l=c->h1; nl2c(l,cp); |
| 458 |
|
|
l=c->h2; nl2c(l,cp); |
| 459 |
|
|
l=c->h3; nl2c(l,cp); |
| 460 |
|
|
l=c->h4; nl2c(l,cp); |
| 461 |
|
|
|
| 462 |
|
|
/* clear stuff, sha1_block may be leaving some stuff on the stack |
| 463 |
|
|
* but I'm not worried :-) */ |
| 464 |
|
|
c->num=0; |
| 465 |
|
|
/* memset((char *)&c,0,sizeof(c));*/ |
| 466 |
|
|
} |
| 467 |
|
|
|
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