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Mutt089src.lha
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Mutt-0.89i-AMIGA
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sha1dgst.c
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C/C++ Source or Header
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1998-01-28
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10KB
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374 lines
/* crypto/sha/sha1dgst.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.]
*/
#include <stdio.h>
#undef SHA_0
#define SHA_1
#include "sha.h"
#include "sha_locl.h"
char *SHA1_version="SHA1 part of SSLeay 0.8.1 19-Jul-1997";
/* Implemented from SHA-1 document - The Secure Hash Algorithm
*/
#define INIT_DATA_h0 (unsigned long)0x67452301L
#define INIT_DATA_h1 (unsigned long)0xefcdab89L
#define INIT_DATA_h2 (unsigned long)0x98badcfeL
#define INIT_DATA_h3 (unsigned long)0x10325476L
#define INIT_DATA_h4 (unsigned long)0xc3d2e1f0L
#define K_00_19 0x5a827999L
#define K_20_39 0x6ed9eba1L
#define K_40_59 0x8f1bbcdcL
#define K_60_79 0xca62c1d6L
#ifndef NOPROTO
static void sha1_block(SHA_CTX *c, register unsigned long *p);
#else
static void sha1_block();
#endif
void SHA1_Init(c)
SHA_CTX *c;
{
c->h0=INIT_DATA_h0;
c->h1=INIT_DATA_h1;
c->h2=INIT_DATA_h2;
c->h3=INIT_DATA_h3;
c->h4=INIT_DATA_h4;
c->Nl=0;
c->Nh=0;
c->num=0;
}
void SHA1_Update(c, data, len)
SHA_CTX *c;
register unsigned char *data;
unsigned long len;
{
register ULONG *p;
int ew,ec,sw,sc;
ULONG l;
if (len == 0) return;
l=(c->Nl+(len<<3))&0xffffffff;
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) >= SHA_CBLOCK)
{
l= p[sw];
p_c2nl(data,l,sc);
p[sw++]=l;
for (; sw<SHA_LBLOCK; sw++)
{
c2nl(data,l);
p[sw]=l;
}
len-=(SHA_CBLOCK-c->num);
sha1_block(c,p);
c->num=0;
/* drop through and do the rest */
}
else
{
c->num+=(int)len;
if ((sc+len) < 4) /* ugly, add char's to a word */
{
l= p[sw];
p_c2nl_p(data,l,sc,len);
p[sw]=l;
}
else
{
ew=(c->num>>2);
ec=(c->num&0x03);
l= p[sw];
p_c2nl(data,l,sc);
p[sw++]=l;
for (; sw < ew; sw++)
{ c2nl(data,l); p[sw]=l; }
if (ec)
{
c2nl_p(data,l,ec);
p[sw]=l;
}
}
return;
}
}
/* we now can process the input data in blocks of SHA_CBLOCK
* chars and save the leftovers to c->data. */
p=c->data;
while (len >= SHA_CBLOCK)
{
#if defined(B_ENDIAN) || defined(L_ENDIAN)
memcpy(p,data,SHA_CBLOCK);
data+=SHA_CBLOCK;
#ifdef L_ENDIAN
for (sw=(SHA_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=(SHA_BLOCK/4); sw; sw--)
{
c2nl(data,l); *(p++)=l;
c2nl(data,l); *(p++)=l;
c2nl(data,l); *(p++)=l;
c2nl(data,l); *(p++)=l;
}
#endif
p=c->data;
sha1_block(c,p);
len-=SHA_CBLOCK;
}
ec=(int)len;
c->num=ec;
ew=(ec>>2);
ec&=0x03;
for (sw=0; sw < ew; sw++)
{ c2nl(data,l); p[sw]=l; }
c2nl_p(data,l,ec);
p[sw]=l;
}
static void sha1_block(c, X)
SHA_CTX *c;
register unsigned long *X;
{
register ULONG A,B,C,D,E,T;
A=c->h0;
B=c->h1;
C=c->h2;
D=c->h3;
E=c->h4;
BODY_00_15( 0,A,B,C,D,E,T);
BODY_00_15( 1,T,A,B,C,D,E);
BODY_00_15( 2,E,T,A,B,C,D);
BODY_00_15( 3,D,E,T,A,B,C);
BODY_00_15( 4,C,D,E,T,A,B);
BODY_00_15( 5,B,C,D,E,T,A);
BODY_00_15( 6,A,B,C,D,E,T);
BODY_00_15( 7,T,A,B,C,D,E);
BODY_00_15( 8,E,T,A,B,C,D);
BODY_00_15( 9,D,E,T,A,B,C);
BODY_00_15(10,C,D,E,T,A,B);
BODY_00_15(11,B,C,D,E,T,A);
BODY_00_15(12,A,B,C,D,E,T);
BODY_00_15(13,T,A,B,C,D,E);
BODY_00_15(14,E,T,A,B,C,D);
BODY_00_15(15,D,E,T,A,B,C);
BODY_16_19(16,C,D,E,T,A,B);
BODY_16_19(17,B,C,D,E,T,A);
BODY_16_19(18,A,B,C,D,E,T);
BODY_16_19(19,T,A,B,C,D,E);
BODY_20_39(20,E,T,A,B,C,D);
BODY_20_39(21,D,E,T,A,B,C);
BODY_20_39(22,C,D,E,T,A,B);
BODY_20_39(23,B,C,D,E,T,A);
BODY_20_39(24,A,B,C,D,E,T);
BODY_20_39(25,T,A,B,C,D,E);
BODY_20_39(26,E,T,A,B,C,D);
BODY_20_39(27,D,E,T,A,B,C);
BODY_20_39(28,C,D,E,T,A,B);
BODY_20_39(29,B,C,D,E,T,A);
BODY_20_39(30,A,B,C,D,E,T);
BODY_20_39(31,T,A,B,C,D,E);
BODY_20_39(32,E,T,A,B,C,D);
BODY_20_39(33,D,E,T,A,B,C);
BODY_20_39(34,C,D,E,T,A,B);
BODY_20_39(35,B,C,D,E,T,A);
BODY_20_39(36,A,B,C,D,E,T);
BODY_20_39(37,T,A,B,C,D,E);
BODY_20_39(38,E,T,A,B,C,D);
BODY_20_39(39,D,E,T,A,B,C);
BODY_40_59(40,C,D,E,T,A,B);
BODY_40_59(41,B,C,D,E,T,A);
BODY_40_59(42,A,B,C,D,E,T);
BODY_40_59(43,T,A,B,C,D,E);
BODY_40_59(44,E,T,A,B,C,D);
BODY_40_59(45,D,E,T,A,B,C);
BODY_40_59(46,C,D,E,T,A,B);
BODY_40_59(47,B,C,D,E,T,A);
BODY_40_59(48,A,B,C,D,E,T);
BODY_40_59(49,T,A,B,C,D,E);
BODY_40_59(50,E,T,A,B,C,D);
BODY_40_59(51,D,E,T,A,B,C);
BODY_40_59(52,C,D,E,T,A,B);
BODY_40_59(53,B,C,D,E,T,A);
BODY_40_59(54,A,B,C,D,E,T);
BODY_40_59(55,T,A,B,C,D,E);
BODY_40_59(56,E,T,A,B,C,D);
BODY_40_59(57,D,E,T,A,B,C);
BODY_40_59(58,C,D,E,T,A,B);
BODY_40_59(59,B,C,D,E,T,A);
BODY_60_79(60,A,B,C,D,E,T);
BODY_60_79(61,T,A,B,C,D,E);
BODY_60_79(62,E,T,A,B,C,D);
BODY_60_79(63,D,E,T,A,B,C);
BODY_60_79(64,C,D,E,T,A,B);
BODY_60_79(65,B,C,D,E,T,A);
BODY_60_79(66,A,B,C,D,E,T);
BODY_60_79(67,T,A,B,C,D,E);
BODY_60_79(68,E,T,A,B,C,D);
BODY_60_79(69,D,E,T,A,B,C);
BODY_60_79(70,C,D,E,T,A,B);
BODY_60_79(71,B,C,D,E,T,A);
BODY_60_79(72,A,B,C,D,E,T);
BODY_60_79(73,T,A,B,C,D,E);
BODY_60_79(74,E,