/*

 * LIBOIL - Library of Optimized Inner Loops

 * Copyright (c) 2004 David A. Schleef <ds@schleef.org>

 * All rights reserved.

 *

 * 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 above 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.

 * 

 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 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.

 */

//Portions Copyright (c)  2008-2009 Nokia Corporation and/or its subsidiary(-ies). All rights reserved. 

#ifdef HAVE_CONFIG_H

#include "config.h"

#endif

#include <liboil/liboil.h>

#include "md5.h"

/**

 * oil_md5:

 * @i_4:

 * @s_16:

 *

 * Performs an MD5 checksum iteration.  The iteration operates on

 * the 64 bytes contained in @s_16, and changes the hash contained

 * in @i_4.  This only implements a portion of the MD5 algorithm.

 * The full MD5 algorithm requires initializing the hash

 * with a specific value and additional handling of bytes at the

 * end of the stream.

 *

 * See also the md5 example in the Liboil source code.

 *

 * FIXME: need a reference here

 */

OIL_DEFINE_CLASS (md5, "uint32_t *i_4, uint32_t *s_16");

#ifdef WORDS_BIGENDIAN

#define uint32_to_host(a) \

  ((((a)&0xff)<<24)|(((a)&0xff00)<<8)|(((a)&0xff0000)>>8)|(((a)>>24)&0xff))

#else

#define uint32_to_host(a) (a)

#endif

#define F1(x, y, z) (z ^ (x & (y ^ z)))

#define F2(x, y, z) F1(z, x, y)

#define F3(x, y, z) (x ^ y ^ z)

#define F4(x, y, z) (y ^ (x | ~z))

#define MD5STEP(f,w,x,y,z,in,offset,s) \

  (w += f(x,y,z) + uint32_to_host(in) + offset, w = (w<<s | w>>(32-s)) + x)

static void

md5_c(uint32_t *state, uint32_t *src)

{

  uint32_t a,b,c,d;

  a = state[0];

  b = state[1];

  c = state[2];

  d = state[3];

  MD5STEP(F1, a, b, c, d, src[0], 0xd76aa478, 7);

  MD5STEP(F1, d, a, b, c, src[1], 0xe8c7b756, 12);

  MD5STEP(F1, c, d, a, b, src[2], 0x242070db, 17);

  MD5STEP(F1, b, c, d, a, src[3], 0xc1bdceee, 22);

  MD5STEP(F1, a, b, c, d, src[4], 0xf57c0faf, 7);

  MD5STEP(F1, d, a, b, c, src[5], 0x4787c62a, 12);

  MD5STEP(F1, c, d, a, b, src[6], 0xa8304613, 17);

  MD5STEP(F1, b, c, d, a, src[7], 0xfd469501, 22);

  MD5STEP(F1, a, b, c, d, src[8], 0x698098d8, 7);

  MD5STEP(F1, d, a, b, c, src[9], 0x8b44f7af, 12);

  MD5STEP(F1, c, d, a, b, src[10], 0xffff5bb1, 17);

  MD5STEP(F1, b, c, d, a, src[11], 0x895cd7be, 22);

  MD5STEP(F1, a, b, c, d, src[12], 0x6b901122, 7);

  MD5STEP(F1, d, a, b, c, src[13], 0xfd987193, 12);

  MD5STEP(F1, c, d, a, b, src[14], 0xa679438e, 17);

  MD5STEP(F1, b, c, d, a, src[15], 0x49b40821, 22);

  MD5STEP(F2, a, b, c, d, src[1], 0xf61e2562, 5);

  MD5STEP(F2, d, a, b, c, src[6], 0xc040b340, 9);

  MD5STEP(F2, c, d, a, b, src[11], 0x265e5a51, 14);

  MD5STEP(F2, b, c, d, a, src[0], 0xe9b6c7aa, 20);

  MD5STEP(F2, a, b, c, d, src[5], 0xd62f105d, 5);

  MD5STEP(F2, d, a, b, c, src[10], 0x02441453, 9);

  MD5STEP(F2, c, d, a, b, src[15], 0xd8a1e681, 14);

  MD5STEP(F2, b, c, d, a, src[4], 0xe7d3fbc8, 20);

  MD5STEP(F2, a, b, c, d, src[9], 0x21e1cde6, 5);

  MD5STEP(F2, d, a, b, c, src[14], 0xc33707d6, 9);

  MD5STEP(F2, c, d, a, b, src[3], 0xf4d50d87, 14);

  MD5STEP(F2, b, c, d, a, src[8], 0x455a14ed, 20);

  MD5STEP(F2, a, b, c, d, src[13], 0xa9e3e905, 5);

  MD5STEP(F2, d, a, b, c, src[2], 0xfcefa3f8, 9);

  MD5STEP(F2, c, d, a, b, src[7], 0x676f02d9, 14);

  MD5STEP(F2, b, c, d, a, src[12], 0x8d2a4c8a, 20);

  MD5STEP(F3, a, b, c, d, src[5], 0xfffa3942, 4);

  MD5STEP(F3, d, a, b, c, src[8], 0x8771f681, 11);

  MD5STEP(F3, c, d, a, b, src[11], 0x6d9d6122, 16);

  MD5STEP(F3, b, c, d, a, src[14], 0xfde5380c, 23);

  MD5STEP(F3, a, b, c, d, src[1], 0xa4beea44, 4);

  MD5STEP(F3, d, a, b, c, src[4], 0x4bdecfa9, 11);

  MD5STEP(F3, c, d, a, b, src[7], 0xf6bb4b60, 16);

  MD5STEP(F3, b, c, d, a, src[10], 0xbebfbc70, 23);

  MD5STEP(F3, a, b, c, d, src[13], 0x289b7ec6, 4);

  MD5STEP(F3, d, a, b, c, src[0], 0xeaa127fa, 11);

  MD5STEP(F3, c, d, a, b, src[3], 0xd4ef3085, 16);

  MD5STEP(F3, b, c, d, a, src[6], 0x04881d05, 23);

  MD5STEP(F3, a, b, c, d, src[9], 0xd9d4d039, 4);

  MD5STEP(F3, d, a, b, c, src[12], 0xe6db99e5, 11);

  MD5STEP(F3, c, d, a, b, src[15], 0x1fa27cf8, 16);

  MD5STEP(F3, b, c, d, a, src[2], 0xc4ac5665, 23);

  MD5STEP(F4, a, b, c, d, src[0], 0xf4292244, 6);

  MD5STEP(F4, d, a, b, c, src[7], 0x432aff97, 10);

  MD5STEP(F4, c, d, a, b, src[14], 0xab9423a7, 15);

  MD5STEP(F4, b, c, d, a, src[5], 0xfc93a039, 21);

  MD5STEP(F4, a, b, c, d, src[12], 0x655b59c3, 6);

  MD5STEP(F4, d, a, b, c, src[3], 0x8f0ccc92, 10);

  MD5STEP(F4, c, d, a, b, src[10], 0xffeff47d, 15);

  MD5STEP(F4, b, c, d, a, src[1], 0x85845dd1, 21);

  MD5STEP(F4, a, b, c, d, src[8], 0x6fa87e4f, 6);

  MD5STEP(F4, d, a, b, c, src[15], 0xfe2ce6e0, 10);

  MD5STEP(F4, c, d, a, b, src[6], 0xa3014314, 15);

  MD5STEP(F4, b, c, d, a, src[13], 0x4e0811a1, 21);

  MD5STEP(F4, a, b, c, d, src[4], 0xf7537e82, 6);

  MD5STEP(F4, d, a, b, c, src[11], 0xbd3af235, 10);

  MD5STEP(F4, c, d, a, b, src[2], 0x2ad7d2bb, 15);

  MD5STEP(F4, b, c, d, a, src[9], 0xeb86d391, 21);

  state[0] += a;

  state[1] += b;

  state[2] += c;

  state[3] += d;

}

OIL_DEFINE_IMPL_REF (md5_c, md5);

#ifdef	__SYMBIAN32__

OilFunctionClass* __oil_function_class_md5() {

		return &_oil_function_class_md5;

}

#endif

#ifdef	__SYMBIAN32__

OilFunctionImpl* __oil_function_impl_md5_c() {

		return &_oil_function_impl_md5_c;

}

#endif

#ifdef	__SYMBIAN32__

EXPORT_C void** _oil_function_class_ptr_md5 ()	{

	oil_function_class_ptr_md5 = __oil_function_class_md5();

	return &oil_function_class_ptr_md5->func;

	}

#endif