openssl/crypto/sha/sha_dgst.c
Ralf S. Engelschall 9cb0969f65 Fix version stuff:
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: ----------------------------------------------------------------------
1998-12-31 09:36:40 +00:00

442 lines
11 KiB
C

/* crypto/sha/sha_dgst.c */
/* Copyright (C) 1995-1998 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>
#include <string.h>
#define SHA_0
#undef SHA_1
#include "sha.h"
#include "sha_locl.h"
char *SHA_version="SHA part of OpenSSL 0.9.2 31-Dec-1998";
/* Implemented from SHA-0 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
void sha_block(SHA_CTX *c, register unsigned long *p, int num);
#else
void sha_block();
#endif
#define M_c2nl c2nl
#define M_p_c2nl p_c2nl
#define M_c2nl_p c2nl_p
#define M_p_c2nl_p p_c2nl_p
#define M_nl2c nl2c
void SHA_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 SHA_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))&0xffffffffL;
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];
M_p_c2nl(data,l,sc);
p[sw++]=l;
for (; sw<SHA_LBLOCK; sw++)
{
M_c2nl(data,l);
p[sw]=l;
}
len-=(SHA_CBLOCK-c->num);
sha_block(c,p,64);
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];
M_p_c2nl_p(data,l,sc,len);
p[sw]=l;
}
else
{
ew=(c->num>>2);
ec=(c->num&0x03);
l= p[sw];
M_p_c2nl(data,l,sc);
p[sw++]=l;
for (; sw < ew; sw++)
{ M_c2nl(data,l); p[sw]=l; }
if (ec)
{
M_c2nl_p(data,l,ec);
p[sw]=l;
}
}
return;
}
}
/* We can only do the following code for assember, the reason
* being that the sha_block 'C' version changes the values
* in the 'data' array. The assember code avoids this and
* copies it to a local array. I should be able to do this for
* the C version as well....
*/
#if 1
#if defined(B_ENDIAN) || defined(SHA_ASM)
if ((((unsigned long)data)%sizeof(ULONG)) == 0)
{
sw=len/SHA_CBLOCK;
if (sw)
{
sw*=SHA_CBLOCK;
sha_block(c,(ULONG *)data,sw);
data+=sw;
len-=sw;
}
}
#endif
#endif
/* 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)
if (p != (unsigned long *)data)
memcpy(p,data,SHA_CBLOCK);
data+=SHA_CBLOCK;
# ifdef L_ENDIAN
# ifndef SHA_ASM /* Will not happen */
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;
}
p=c->data;
# endif
# endif
#else
for (sw=(SHA_BLOCK/4); sw; sw--)
{
M_c2nl(data,l); *(p++)=l;
M_c2nl(data,l); *(p++)=l;
M_c2nl(data,l); *(p++)=l;
M_c2nl(data,l); *(p++)=l;
}
p=c->data;
#endif
sha_block(c,p,64);
len-=SHA_CBLOCK;
}
ec=(int)len;
c->num=ec;
ew=(ec>>2);
ec&=0x03;
for (sw=0; sw < ew; sw++)
{ M_c2nl(data,l); p[sw]=l; }
M_c2nl_p(data,l,ec);
p[sw]=l;
}
void SHA_Transform(c,b)
SHA_CTX *c;
unsigned char *b;
{
ULONG p[16];
#if !defined(B_ENDIAN)
ULONG *q;
int i;
#endif
#if defined(B_ENDIAN) || defined(L_ENDIAN)
memcpy(p,b,64);
#ifdef L_ENDIAN
q=p;
for (i=(SHA_LBLOCK/4); i; i--)
{
Endian_Reverse32(q[0]);
Endian_Reverse32(q[1]);
Endian_Reverse32(q[2]);
Endian_Reverse32(q[3]);
q+=4;
}
#endif
#else
q=p;
for (i=(SHA_LBLOCK/4); i; i--)
{
ULONG l;
c2nl(b,l); *(q++)=l;
c2nl(b,l); *(q++)=l;
c2nl(b,l); *(q++)=l;
c2nl(b,l); *(q++)=l;
}
#endif
sha_block(c,p,64);
}
void sha_block(c, W, num)
SHA_CTX *c;
register unsigned long *W;
int num;
{
register ULONG A,B,C,D,E,T;
ULONG X[16];
A=c->h0;
B=c->h1;
C=c->h2;
D=c->h3;
E=c->h4;
for (;;)
{
BODY_00_15( 0,A,B,C,D,E,T,W);
BODY_00_15( 1,T,A,B,C,D,E,W);
BODY_00_15( 2,E,T,A,B,C,D,W);
BODY_00_15( 3,D,E,T,A,B,C,W);
BODY_00_15( 4,C,D,E,T,A,B,W);
BODY_00_15( 5,B,C,D,E,T,A,W);
BODY_00_15( 6,A,B,C,D,E,T,W);
BODY_00_15( 7,T,A,B,C,D,E,W);
BODY_00_15( 8,E,T,A,B,C,D,W);
BODY_00_15( 9,D,E,T,A,B,C,W);
BODY_00_15(10,C,D,E,T,A,B,W);
BODY_00_15(11,B,C,D,E,T,A,W);
BODY_00_15(12,A,B,C,D,E,T,W);
BODY_00_15(13,T,A,B,C,D,E,W);
BODY_00_15(14,E,T,A,B,C,D,W);
BODY_00_15(15,D,E,T,A,B,C,W);
BODY_16_19(16,C,D,E,T,A,B,W,W,W,W);
BODY_16_19(17,B,C,D,E,T,A,W,W,W,W);
BODY_16_19(18,A,B,C,D,E,T,W,W,W,W);
BODY_16_19(19,T,A,B,C,D,E,W,W,W,X);
BODY_20_31(20,E,T,A,B,C,D,W,W,W,X);
BODY_20_31(21,D,E,T,A,B,C,W,W,W,X);
BODY_20_31(22,C,D,E,T,A,B,W,W,W,X);
BODY_20_31(23,B,C,D,E,T,A,W,W,W,X);
BODY_20_31(24,A,B,C,D,E,T,W,W,X,X);
BODY_20_31(25,T,A,B,C,D,E,W,W,X,X);
BODY_20_31(26,E,T,A,B,C,D,W,W,X,X);
BODY_20_31(27,D,E,T,A,B,C,W,W,X,X);
BODY_20_31(28,C,D,E,T,A,B,W,W,X,X);
BODY_20_31(29,B,C,D,E,T,A,W,W,X,X);
BODY_20_31(30,A,B,C,D,E,T,W,X,X,X);
BODY_20_31(31,T,A,B,C,D,E,W,X,X,X);
BODY_32_39(32,E,T,A,B,C,D,X);
BODY_32_39(33,D,E,T,A,B,C,X);
BODY_32_39(34,C,D,E,T,A,B,X);
BODY_32_39(35,B,C,D,E,T,A,X);
BODY_32_39(36,A,B,C,D,E,T,X);
BODY_32_39(37,T,A,B,C,D,E,X);
BODY_32_39(38,E,T,A,B,C,D,X);
BODY_32_39(39,D,E,T,A,B,C,X);
BODY_40_59(40,C,D,E,T,A,B,X);
BODY_40_59(41,B,C,D,E,T,A,X);
BODY_40_59(42,A,B,C,D,E,T,X);
BODY_40_59(43,T,A,B,C,D,E,X);
BODY_40_59(44,E,T,A,B,C,D,X);
BODY_40_59(45,D,E,T,A,B,C,X);
BODY_40_59(46,C,D,E,T,A,B,X);
BODY_40_59(47,B,C,D,E,T,A,X);
BODY_40_59(48,A,B,C,D,E,T,X);
BODY_40_59(49,T,A,B,C,D,E,X);
BODY_40_59(50,E,T,A,B,C,D,X);
BODY_40_59(51,D,E,T,A,B,C,X);
BODY_40_59(52,C,D,E,T,A,B,X);
BODY_40_59(53,B,C,D,E,T,A,X);
BODY_40_59(54,A,B,C,D,E,T,X);
BODY_40_59(55,T,A,B,C,D,E,X);
BODY_40_59(56,E,T,A,B,C,D,X);
BODY_40_59(57,D,E,T,A,B,C,X);
BODY_40_59(58,C,D,E,T,A,B,X);
BODY_40_59(59,B,C,D,E,T,A,X);
BODY_60_79(60,A,B,C,D,E,T,X);
BODY_60_79(61,T,A,B,C,D,E,X);
BODY_60_79(62,E,T,A,B,C,D,X);
BODY_60_79(63,D,E,T,A,B,C,X);
BODY_60_79(64,C,D,E,T,A,B,X);
BODY_60_79(65,B,C,D,E,T,A,X);
BODY_60_79(66,A,B,C,D,E,T,X);
BODY_60_79(67,T,A,B,C,D,E,X);
BODY_60_79(68,E,T,A,B,C,D,X);
BODY_60_79(69,D,E,T,A,B,C,X);
BODY_60_79(70,C,D,E,T,A,B,X);
BODY_60_79(71,B,C,D,E,T,A,X);
BODY_60_79(72,A,B,C,D,E,T,X);
BODY_60_79(73,T,A,B,C,D,E,X);
BODY_60_79(74,E,T,A,B,C,D,X);
BODY_60_79(75,D,E,T,A,B,C,X);
BODY_60_79(76,C,D,E,T,A,B,X);
BODY_60_79(77,B,C,D,E,T,A,X);
BODY_60_79(78,A,B,C,D,E,T,X);
BODY_60_79(79,T,A,B,C,D,E,X);
c->h0=(c->h0+E)&0xffffffffL;
c->h1=(c->h1+T)&0xffffffffL;
c->h2=(c->h2+A)&0xffffffffL;
c->h3=(c->h3+B)&0xffffffffL;
c->h4=(c->h4+C)&0xffffffffL;
num-=64;
if (num <= 0) break;
A=c->h0;
B=c->h1;
C=c->h2;
D=c->h3;
E=c->h4;
W+=16;
}
}
void SHA_Final(md, c)
unsigned char *md;
SHA_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;
#ifdef PURIFY
if ((j&0x03) == 0) p[i]=0;
#endif
l=p[i];
M_p_c2nl(cp,l,j&0x03);
p[i]=l;
i++;
/* i is the next 'undefined word' */
if (c->num >= SHA_LAST_BLOCK)
{
for (; i<SHA_LBLOCK; i++)
p[i]=0;
sha_block(c,p,64);
i=0;
}
for (; i<(SHA_LBLOCK-2); i++)
p[i]=0;
p[SHA_LBLOCK-2]=c->Nh;
p[SHA_LBLOCK-1]=c->Nl;
sha_block(c,p,64);
cp=md;
l=c->h0; nl2c(l,cp);
l=c->h1; nl2c(l,cp);
l=c->h2; nl2c(l,cp);
l=c->h3; nl2c(l,cp);
l=c->h4; nl2c(l,cp);
/* clear stuff, sha_block may be leaving some stuff on the stack
* but I'm not worried :-) */
c->num=0;
/* memset((char *)&c,0,sizeof(c));*/
}