/* crypto/md4/md4.h */

/* 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.]

 */

#ifndef HEADER_MD4_H

#define HEADER_MD4_H

#include <openssl/e_os2.h>

#ifdef  __cplusplus

extern "C" {

#endif

#ifdef OPENSSL_NO_MD4

#error MD4 is disabled.

#endif

/*

 * !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

 * ! MD4_LONG has to be at least 32 bits wide. If it's wider, then !

 * ! MD4_LONG_LOG2 has to be defined along.			   !

 * !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

 */

#if defined(OPENSSL_SYS_WIN16) || defined(__LP32__)

#define MD4_LONG unsigned long

#elif defined(OPENSSL_SYS_CRAY) || defined(__ILP64__)

#define MD4_LONG unsigned long

#define MD4_LONG_LOG2 3

/*

 * _CRAY note. I could declare short, but I have no idea what impact

 * does it have on performance on none-T3E machines. I could declare

 * int, but at least on C90 sizeof(int) can be chosen at compile time.

 * So I've chosen long...

 *					<appro@fy.chalmers.se>

 */

#else

#define MD4_LONG unsigned int

#endif

#define MD4_CBLOCK	64

#define MD4_LBLOCK	(MD4_CBLOCK/4)

#define MD4_DIGEST_LENGTH 16

typedef struct MD4state_st

	{

	MD4_LONG A,B,C,D;

	MD4_LONG Nl,Nh;

	MD4_LONG data[MD4_LBLOCK];

	int num;

	} MD4_CTX;

int MD4_Init(MD4_CTX *c);

int MD4_Update(MD4_CTX *c, const void *data, unsigned long len);

int MD4_Final(unsigned char *md, MD4_CTX *c);

unsigned char *MD4(const unsigned char *d, unsigned long n, unsigned char *md);

void MD4_Transform(MD4_CTX *c, const unsigned char *b);

#ifdef  __cplusplus

}

#endif

#endif