/* crypto/md2/md2_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.]

  */

 /*

  © Portions copyright (c) 2006 Nokia Corporation.  All rights reserved.

  */

 #include <stdio.h>

 #include <stdlib.h>

 #include <string.h>

 #include <openssl/md2.h>

 #include <openssl/opensslv.h>

 #include <openssl/crypto.h>

 #if (defined(SYMBIAN) && (defined(__WINSCW__) || defined(__WINS__)))

 #include "libcrypto_wsd_macros.h"

 #include "libcrypto_wsd.h"

 #endif

 const char MD2_version[]="MD2" OPENSSL_VERSION_PTEXT;

 /* Implemented from RFC1319 The MD2 Message-Digest Algorithm

  */

 #define UCHAR	unsigned char

 static void md2_block(MD2_CTX *c, const unsigned char *d);

 #ifndef EMULATOR

 /* The magic S table - I have converted it to hex since it is

  * basically just a random byte string. */

 static MD2_INT S[256]={

 	0x29, 0x2E, 0x43, 0xC9, 0xA2, 0xD8, 0x7C, 0x01,

 	0x3D, 0x36, 0x54, 0xA1, 0xEC, 0xF0, 0x06, 0x13,

 	0x62, 0xA7, 0x05, 0xF3, 0xC0, 0xC7, 0x73, 0x8C,

 	0x98, 0x93, 0x2B, 0xD9, 0xBC, 0x4C, 0x82, 0xCA,

 	0x1E, 0x9B, 0x57, 0x3C, 0xFD, 0xD4, 0xE0, 0x16,

 	0x67, 0x42, 0x6F, 0x18, 0x8A, 0x17, 0xE5, 0x12,

 	0xBE, 0x4E, 0xC4, 0xD6, 0xDA, 0x9E, 0xDE, 0x49,

 	0xA0, 0xFB, 0xF5, 0x8E, 0xBB, 0x2F, 0xEE, 0x7A,

 	0xA9, 0x68, 0x79, 0x91, 0x15, 0xB2, 0x07, 0x3F,

 	0x94, 0xC2, 0x10, 0x89, 0x0B, 0x22, 0x5F, 0x21,

 	0x80, 0x7F, 0x5D, 0x9A, 0x5A, 0x90, 0x32, 0x27,

 	0x35, 0x3E, 0xCC, 0xE7, 0xBF, 0xF7, 0x97, 0x03,

 	0xFF, 0x19, 0x30, 0xB3, 0x48, 0xA5, 0xB5, 0xD1,

 	0xD7, 0x5E, 0x92, 0x2A, 0xAC, 0x56, 0xAA, 0xC6,

 	0x4F, 0xB8, 0x38, 0xD2, 0x96, 0xA4, 0x7D, 0xB6,

 	0x76, 0xFC, 0x6B, 0xE2, 0x9C, 0x74, 0x04, 0xF1,

 	0x45, 0x9D, 0x70, 0x59, 0x64, 0x71, 0x87, 0x20,

 	0x86, 0x5B, 0xCF, 0x65, 0xE6, 0x2D, 0xA8, 0x02,

 	0x1B, 0x60, 0x25, 0xAD, 0xAE, 0xB0, 0xB9, 0xF6,

 	0x1C, 0x46, 0x61, 0x69, 0x34, 0x40, 0x7E, 0x0F,

 	0x55, 0x47, 0xA3, 0x23, 0xDD, 0x51, 0xAF, 0x3A,

 	0xC3, 0x5C, 0xF9, 0xCE, 0xBA, 0xC5, 0xEA, 0x26,

 	0x2C, 0x53, 0x0D, 0x6E, 0x85, 0x28, 0x84, 0x09,

 	0xD3, 0xDF, 0xCD, 0xF4, 0x41, 0x81, 0x4D, 0x52,

 	0x6A, 0xDC, 0x37, 0xC8, 0x6C, 0xC1, 0xAB, 0xFA,

 	0x24, 0xE1, 0x7B, 0x08, 0x0C, 0xBD, 0xB1, 0x4A,

 	0x78, 0x88, 0x95, 0x8B, 0xE3, 0x63, 0xE8, 0x6D,

 	0xE9, 0xCB, 0xD5, 0xFE, 0x3B, 0x00, 0x1D, 0x39,

 	0xF2, 0xEF, 0xB7, 0x0E, 0x66, 0x58, 0xD0, 0xE4,

 	0xA6, 0x77, 0x72, 0xF8, 0xEB, 0x75, 0x4B, 0x0A,

 	0x31, 0x44, 0x50, 0xB4, 0x8F, 0xED, 0x1F, 0x1A,

 	0xDB, 0x99, 0x8D, 0x33, 0x9F, 0x11, 0x83, 0x14,

 	};

 #else

 static const MD2_INT S[256]={

 	0x29, 0x2E, 0x43, 0xC9, 0xA2, 0xD8, 0x7C, 0x01,

 	0x3D, 0x36, 0x54, 0xA1, 0xEC, 0xF0, 0x06, 0x13,

 	0x62, 0xA7, 0x05, 0xF3, 0xC0, 0xC7, 0x73, 0x8C,

 	0x98, 0x93, 0x2B, 0xD9, 0xBC, 0x4C, 0x82, 0xCA,

 	0x1E, 0x9B, 0x57, 0x3C, 0xFD, 0xD4, 0xE0, 0x16,

 	0x67, 0x42, 0x6F, 0x18, 0x8A, 0x17, 0xE5, 0x12,

 	0xBE, 0x4E, 0xC4, 0xD6, 0xDA, 0x9E, 0xDE, 0x49,

 	0xA0, 0xFB, 0xF5, 0x8E, 0xBB, 0x2F, 0xEE, 0x7A,

 	0xA9, 0x68, 0x79, 0x91, 0x15, 0xB2, 0x07, 0x3F,

 	0x94, 0xC2, 0x10, 0x89, 0x0B, 0x22, 0x5F, 0x21,

 	0x80, 0x7F, 0x5D, 0x9A, 0x5A, 0x90, 0x32, 0x27,

 	0x35, 0x3E, 0xCC, 0xE7, 0xBF, 0xF7, 0x97, 0x03,

 	0xFF, 0x19, 0x30, 0xB3, 0x48, 0xA5, 0xB5, 0xD1,

 	0xD7, 0x5E, 0x92, 0x2A, 0xAC, 0x56, 0xAA, 0xC6,

 	0x4F, 0xB8, 0x38, 0xD2, 0x96, 0xA4, 0x7D, 0xB6,

 	0x76, 0xFC, 0x6B, 0xE2, 0x9C, 0x74, 0x04, 0xF1,

 	0x45, 0x9D, 0x70, 0x59, 0x64, 0x71, 0x87, 0x20,

 	0x86, 0x5B, 0xCF, 0x65, 0xE6, 0x2D, 0xA8, 0x02,

 	0x1B, 0x60, 0x25, 0xAD, 0xAE, 0xB0, 0xB9, 0xF6,

 	0x1C, 0x46, 0x61, 0x69, 0x34, 0x40, 0x7E, 0x0F,

 	0x55, 0x47, 0xA3, 0x23, 0xDD, 0x51, 0xAF, 0x3A,

 	0xC3, 0x5C, 0xF9, 0xCE, 0xBA, 0xC5, 0xEA, 0x26,

 	0x2C, 0x53, 0x0D, 0x6E, 0x85, 0x28, 0x84, 0x09,

 	0xD3, 0xDF, 0xCD, 0xF4, 0x41, 0x81, 0x4D, 0x52,

 	0x6A, 0xDC, 0x37, 0xC8, 0x6C, 0xC1, 0xAB, 0xFA,

 	0x24, 0xE1, 0x7B, 0x08, 0x0C, 0xBD, 0xB1, 0x4A,

 	0x78, 0x88, 0x95, 0x8B, 0xE3, 0x63, 0xE8, 0x6D,

 	0xE9, 0xCB, 0xD5, 0xFE, 0x3B, 0x00, 0x1D, 0x39,

 	0xF2, 0xEF, 0xB7, 0x0E, 0x66, 0x58, 0xD0, 0xE4,

 	0xA6, 0x77, 0x72, 0xF8, 0xEB, 0x75, 0x4B, 0x0A,

 	0x31, 0x44, 0x50, 0xB4, 0x8F, 0xED, 0x1F, 0x1A,

 	0xDB, 0x99, 0x8D, 0x33, 0x9F, 0x11, 0x83, 0x14,

 	};

 #endif

 EXPORT_C const char *MD2_options(void)

 	{

 	if (sizeof(MD2_INT) == 1)

 		return("md2(char)");

 	else

 		return("md2(int)");

 	}

 EXPORT_C int MD2_Init(MD2_CTX *c)

 	{

 	c->num=0;

 	memset(c->state,0,sizeof c->state);

 	memset(c->cksm,0,sizeof c->cksm);

 	memset(c->data,0,sizeof c->data);

 	return 1;

 	}

 EXPORT_C int MD2_Update(MD2_CTX *c, const unsigned char *data, size_t len)

 	{

 	register UCHAR *p;

 	if (len == 0) return 1;

 	p=c->data;

 	if (c->num != 0)

 		{

 		if ((c->num+len) >= MD2_BLOCK)

 			{

 			memcpy(&(p[c->num]),data,MD2_BLOCK-c->num);

 			md2_block(c,c->data);

 			data+=(MD2_BLOCK - c->num);

 			len-=(MD2_BLOCK - c->num);

 			c->num=0;

 			/* drop through and do the rest */

 			}

 		else

 			{

 			memcpy(&(p[c->num]),data,len);

 			/* data+=len; */

 			c->num+=(int)len;

 			return 1;

 			}

 		}

 	/* we now can process the input data in blocks of MD2_BLOCK

 	 * chars and save the leftovers to c->data. */

 	while (len >= MD2_BLOCK)

 		{

 		md2_block(c,data);

 		data+=MD2_BLOCK;

 		len-=MD2_BLOCK;

 		}

 	memcpy(p,data,len);

 	c->num=(int)len;

 	return 1;

 	}

 static void md2_block(MD2_CTX *c, const unsigned char *d)

 	{

 	register MD2_INT t,*sp1,*sp2;

 	register int i,j;

 	MD2_INT state[48];

 	sp1=c->state;

 	sp2=c->cksm;

 	j=sp2[MD2_BLOCK-1];

 	for (i=0; i<16; i++)

 		{

 		state[i]=sp1[i];

 		state[i+16]=t=d[i];

 		state[i+32]=(t^sp1[i]);

 		j=sp2[i]^=S[t^j];

 		}

 	t=0;

 	for (i=0; i<18; i++)

 		{

 		for (j=0; j<48; j+=8)

 			{

 			t= state[j+ 0]^=S[t];

 			t= state[j+ 1]^=S[t];

 			t= state[j+ 2]^=S[t];

 			t= state[j+ 3]^=S[t];

 			t= state[j+ 4]^=S[t];

 			t= state[j+ 5]^=S[t];

 			t= state[j+ 6]^=S[t];

 			t= state[j+ 7]^=S[t];

 			}

 		t=(t+i)&0xff;

 		}

 	memcpy(sp1,state,16*sizeof(MD2_INT));

 	OPENSSL_cleanse(state,48*sizeof(MD2_INT));

 	}

 EXPORT_C int MD2_Final(unsigned char *md, MD2_CTX *c)

 	{

 	int i,v;

 	register UCHAR *cp;

 	register MD2_INT *p1,*p2;

 	cp=c->data;

 	p1=c->state;

 	p2=c->cksm;

 	v=MD2_BLOCK-c->num;

 	for (i=c->num; i<MD2_BLOCK; i++)

 		cp[i]=(UCHAR)v;

 	md2_block(c,cp);

 	for (i=0; i<MD2_BLOCK; i++)

 		cp[i]=(UCHAR)p2[i];

 	md2_block(c,cp);

 	for (i=0; i<16; i++)

 		md[i]=(UCHAR)(p1[i]&0xff);

 	memset((char *)&c,0,sizeof(c));

 	return 1;

 	}