/* crypto/md5/md5.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.]
 */

module deimos.openssl.md5;

import deimos.openssl._d_util;

public import deimos.openssl.e_os2;
import core.stdc.config;

extern (C):
nothrow:

version (OPENSSL_NO_MD5) {
  static assert(false, "MD5 is disabled.");
}

/*
 * !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
 * ! MD5_LONG has to be at least 32 bits wide. If it's wider, then !
 * ! MD5_LONG_LOG2 has to be defined along.			   !
 * !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
 */

// #if defined(__LP32__)
// alias c_ulong MD5_LONG;
// #elif defined(OPENSSL_SYS_CRAY) || defined(__ILP64__)
// alias c_ulong MD5_LONG;
// enum MD5_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
// alias uint MD5_LONG;
// #endif
alias uint MD5_LONG;

enum MD5_CBLOCK = 64;
enum MD5_LBLOCK = (MD5_CBLOCK/4);
enum MD5_DIGEST_LENGTH = 16;

struct MD5state_st {
	MD5_LONG A,B,C,D;
	MD5_LONG Nl,Nh;
	MD5_LONG[MD5_LBLOCK] data;
	uint num;
	}
alias MD5state_st MD5_CTX;

version(OPENSSL_FIPS) {
    int private_MD5_Init(MD5_CTX* c);
}
int MD5_Init(MD5_CTX* c);
int MD5_Update(MD5_CTX* c, const(void)* data, size_t len);
int MD5_Final(ubyte* md, MD5_CTX* c);
ubyte* MD5(const(ubyte)* d, size_t n, ubyte* md);
void MD5_Transform(MD5_CTX* c, const(ubyte)* b);