[thirdparty/openssl.git] / crypto / mdc2 / mdc2dgst.c

/* crypto/mdc2/mdc2dgst.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 <stdlib.h>
#include <string.h>
#include <openssl/des.h>
#include <openssl/mdc2.h>

#undef c2l
#define c2l(c,l)	(l =((DES_LONG)(*((c)++)))    , \
			 l|=((DES_LONG)(*((c)++)))<< 8L, \
			 l|=((DES_LONG)(*((c)++)))<<16L, \
			 l|=((DES_LONG)(*((c)++)))<<24L)

#undef l2c
#define l2c(l,c)	(*((c)++)=(unsigned char)(((l)     )&0xff), \
			*((c)++)=(unsigned char)(((l)>> 8L)&0xff), \
			*((c)++)=(unsigned char)(((l)>>16L)&0xff), \
			*((c)++)=(unsigned char)(((l)>>24L)&0xff))

static void mdc2_body(MDC2_CTX *c, const unsigned char *in, unsigned int len);
int MDC2_Init(MDC2_CTX *c)
	{
	c->num=0;
	c->pad_type=1;
	memset(&(c->h[0]),0x52,MDC2_BLOCK);
	memset(&(c->hh[0]),0x25,MDC2_BLOCK);
	return 1;
	}

int MDC2_Update(MDC2_CTX *c, const unsigned char *in, unsigned long len)
	{
	int i,j;

	i=c->num;
	if (i != 0)
		{
		if (i+len < MDC2_BLOCK)
			{
			/* partial block */
			memcpy(&(c->data[i]),in,(int)len);
			c->num+=(int)len;
			return 1;
			}
		else
			{
			/* filled one */
			j=MDC2_BLOCK-i;
			memcpy(&(c->data[i]),in,j);
			len-=j;
			in+=j;
			c->num=0;
			mdc2_body(c,&(c->data[0]),MDC2_BLOCK);
			}
		}
	i=(int)(len&(unsigned long)~(MDC2_BLOCK-1));
	if (i > 0) mdc2_body(c,in,i);
	j=(int)len-i;
	if (j > 0)
		{
		memcpy(&(c->data[0]),&(in[i]),j);
		c->num=j;
		}
	return 1;
	}

static void mdc2_body(MDC2_CTX *c, const unsigned char *in, unsigned int len)
	{
	register DES_LONG tin0,tin1;
	register DES_LONG ttin0,ttin1;
	DES_LONG d[2],dd[2];
	des_key_schedule k;
	unsigned char *p;
	unsigned int i;

	for (i=0; i<len; i+=8)
		{
		c2l(in,tin0); d[0]=dd[0]=tin0;
		c2l(in,tin1); d[1]=dd[1]=tin1;
		c->h[0]=(c->h[0]&0x9f)|0x40;
		c->hh[0]=(c->hh[0]&0x9f)|0x20;

		des_set_odd_parity(&c->h);
		des_set_key_unchecked(&c->h,&k);
		des_encrypt1(d,&k,1);

		des_set_odd_parity(&c->hh);
		des_set_key_unchecked(&c->hh,&k);
		des_encrypt1(dd,&k,1);

		ttin0=tin0^dd[0];
		ttin1=tin1^dd[1];
		tin0^=d[0];
		tin1^=d[1];

		p=c->h;
		l2c(tin0,p);
		l2c(ttin1,p);
		p=c->hh;
		l2c(ttin0,p);
		l2c(tin1,p);
		}
	}

int MDC2_Final(unsigned char *md, MDC2_CTX *c)
	{
	int i,j;

	i=c->num;
	j=c->pad_type;
	if ((i > 0) || (j == 2))
		{
		if (j == 2)
			c->data[i++]=0x80;
		memset(&(c->data[i]),0,MDC2_BLOCK-i);
		mdc2_body(c,c->data,MDC2_BLOCK);
		}
	memcpy(md,(char *)c->h,MDC2_BLOCK);
	memcpy(&(md[MDC2_BLOCK]),(char *)c->hh,MDC2_BLOCK);
	return 1;
	}

#undef TEST

#ifdef TEST
main()
	{
	unsigned char md[MDC2_DIGEST_LENGTH];
	int i;
	MDC2_CTX c;
	static char *text="Now is the time for all ";

	MDC2_Init(&c);
	MDC2_Update(&c,text,strlen(text));
	MDC2_Final(&(md[0]),&c);

	for (i=0; i<MDC2_DIGEST_LENGTH; i++)
		printf("%02X",md[i]);
	printf("\n");
	}

#endif
Commit	Line	Data
d02b48c6	1	/* crypto/mdc2/mdc2dgst.c */
58964a49	2	/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
d02b48c6 RE	3	* All rights reserved.
	4	*
	5	* This package is an SSL implementation written
	6	* by Eric Young (eay@cryptsoft.com).
	7	* The implementation was written so as to conform with Netscapes SSL.
	8	*
	9	* This library is free for commercial and non-commercial use as long as
	10	* the following conditions are aheared to. The following conditions
	11	* apply to all code found in this distribution, be it the RC4, RSA,
	12	* lhash, DES, etc., code; not just the SSL code. The SSL documentation
	13	* included with this distribution is covered by the same copyright terms
	14	* except that the holder is Tim Hudson (tjh@cryptsoft.com).
	15	*
	16	* Copyright remains Eric Young's, and as such any Copyright notices in
	17	* the code are not to be removed.
	18	* If this package is used in a product, Eric Young should be given attribution
	19	* as the author of the parts of the library used.
	20	* This can be in the form of a textual message at program startup or
	21	* in documentation (online or textual) provided with the package.
	22	*
	23	* Redistribution and use in source and binary forms, with or without
	24	* modification, are permitted provided that the following conditions
	25	* are met:
	26	* 1. Redistributions of source code must retain the copyright
	27	* notice, this list of conditions and the following disclaimer.
	28	* 2. Redistributions in binary form must reproduce the above copyright
	29	* notice, this list of conditions and the following disclaimer in the
	30	* documentation and/or other materials provided with the distribution.
	31	* 3. All advertising materials mentioning features or use of this software
	32	* must display the following acknowledgement:
	33	* "This product includes cryptographic software written by
	34	* Eric Young (eay@cryptsoft.com)"
	35	* The word 'cryptographic' can be left out if the rouines from the library
	36	* being used are not cryptographic related :-).
	37	* 4. If you include any Windows specific code (or a derivative thereof) from
	38	* the apps directory (application code) you must include an acknowledgement:
	39	* "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
	40	*
	41	* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
	42	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	43	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	44	* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
	45	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	46	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	47	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	48	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	49	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	50	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	51	* SUCH DAMAGE.
	52	*
	53	* The licence and distribution terms for any publically available version or
	54	* derivative of this code cannot be changed. i.e. this code cannot simply be
	55	* copied and put under another distribution licence
	56	* [including the GNU Public Licence.]
	57	*/
	58
	59	#include <stdio.h>
	60	#include <stdlib.h>
	61	#include <string.h>
ec577822 BM	62	#include <openssl/des.h>
ec577822 BM	63	#include <openssl/mdc2.h>
d02b48c6 RE	64
	65	#undef c2l
	66	#define c2l(c,l) (l =((DES_LONG)(*((c)++))) , \
	67	l\|=((DES_LONG)(*((c)++)))<< 8L, \
	68	l\|=((DES_LONG)(*((c)++)))<<16L, \
	69	l\|=((DES_LONG)(*((c)++)))<<24L)
	70
	71	#undef l2c
	72	#define l2c(l,c) (*((c)++)=(unsigned char)(((l) )&0xff), \
	73	*((c)++)=(unsigned char)(((l)>> 8L)&0xff), \
	74	*((c)++)=(unsigned char)(((l)>>16L)&0xff), \
	75	*((c)++)=(unsigned char)(((l)>>24L)&0xff))
	76
9dbc41d7	77	static void mdc2_body(MDC2_CTX c, const unsigned char in, unsigned int len);
2dc769a1	78	int MDC2_Init(MDC2_CTX *c)
d02b48c6 RE	79	{
	80	c->num=0;
	81	c->pad_type=1;
	82	memset(&(c->h[0]),0x52,MDC2_BLOCK);
	83	memset(&(c->hh[0]),0x25,MDC2_BLOCK);
2dc769a1	84	return 1;
d02b48c6 RE	85	}
d02b48c6 RE	86
2dc769a1	87	int MDC2_Update(MDC2_CTX c, const unsigned char in, unsigned long len)
d02b48c6 RE	88	{
	89	int i,j;
	90
	91	i=c->num;
	92	if (i != 0)
	93	{
	94	if (i+len < MDC2_BLOCK)
	95	{
	96	/* partial block */
	97	memcpy(&(c->data[i]),in,(int)len);
	98	c->num+=(int)len;
2dc769a1	99	return 1;
d02b48c6 RE	100	}
	101	else
	102	{
	103	/* filled one */
	104	j=MDC2_BLOCK-i;
	105	memcpy(&(c->data[i]),in,j);
	106	len-=j;
	107	in+=j;
	108	c->num=0;
	109	mdc2_body(c,&(c->data[0]),MDC2_BLOCK);
	110	}
	111	}
	112	i=(int)(len&(unsigned long)~(MDC2_BLOCK-1));
	113	if (i > 0) mdc2_body(c,in,i);
	114	j=(int)len-i;
	115	if (j > 0)
	116	{
	117	memcpy(&(c->data[0]),&(in[i]),j);
	118	c->num=j;
	119	}
2dc769a1	120	return 1;
d02b48c6 RE	121	}
d02b48c6 RE	122
9dbc41d7	123	static void mdc2_body(MDC2_CTX c, const unsigned char in, unsigned int len)
d02b48c6 RE	124	{
	125	register DES_LONG tin0,tin1;
	126	register DES_LONG ttin0,ttin1;
	127	DES_LONG d[2],dd[2];
d02b48c6 RE	128	des_key_schedule k;
	129	unsigned char *p;
	130	unsigned int i;
	131
d02b48c6 RE	132	for (i=0; i<len; i+=8)
	133	{
	134	c2l(in,tin0); d[0]=dd[0]=tin0;
	135	c2l(in,tin1); d[1]=dd[1]=tin1;
08853ba8 BL	136	c->h[0]=(c->h[0]&0x9f)\|0x40;
08853ba8 BL	137	c->hh[0]=(c->hh[0]&0x9f)\|0x20;
d02b48c6	138
edf0bfb5	139	des_set_odd_parity(&c->h);
dbad1690 BL	140	des_set_key_unchecked(&c->h,&k);
dbad1690 BL	141	des_encrypt1(d,&k,1);
d02b48c6	142
edf0bfb5	143	des_set_odd_parity(&c->hh);
dbad1690 BL	144	des_set_key_unchecked(&c->hh,&k);
dbad1690 BL	145	des_encrypt1(dd,&k,1);
d02b48c6 RE	146
	147	ttin0=tin0^dd[0];
	148	ttin1=tin1^dd[1];
	149	tin0^=d[0];
	150	tin1^=d[1];
	151
08853ba8	152	p=c->h;
d02b48c6 RE	153	l2c(tin0,p);
d02b48c6 RE	154	l2c(ttin1,p);
08853ba8	155	p=c->hh;
d02b48c6 RE	156	l2c(ttin0,p);
	157	l2c(tin1,p);
	158	}
	159	}
	160
2dc769a1	161	int MDC2_Final(unsigned char md, MDC2_CTX c)
d02b48c6 RE	162	{
	163	int i,j;
	164
	165	i=c->num;
	166	j=c->pad_type;
	167	if ((i > 0) \|\| (j == 2))
	168	{
	169	if (j == 2)
	170	c->data[i++]=0x80;
	171	memset(&(c->data[i]),0,MDC2_BLOCK-i);
	172	mdc2_body(c,c->data,MDC2_BLOCK);
	173	}
	174	memcpy(md,(char *)c->h,MDC2_BLOCK);
	175	memcpy(&(md[MDC2_BLOCK]),(char *)c->hh,MDC2_BLOCK);
2dc769a1	176	return 1;
d02b48c6 RE	177	}
	178
	179	#undef TEST
	180
	181	#ifdef TEST
	182	main()
	183	{
	184	unsigned char md[MDC2_DIGEST_LENGTH];
	185	int i;
	186	MDC2_CTX c;
	187	static char *text="Now is the time for all ";
	188
	189	MDC2_Init(&c);
	190	MDC2_Update(&c,text,strlen(text));
	191	MDC2_Final(&(md[0]),&c);
	192
	193	for (i=0; i<MDC2_DIGEST_LENGTH; i++)
	194	printf("%02X",md[i]);
	195	printf("\n");
	196	}
	197
	198	#endif