/*----------------------------------------------------------------------------*/
/* Xymon monitor library.                                                     */
/*                                                                            */
/* This file is part of the Xymon monitor library, but was taken from the     */
/* FreeBSD sources. It was originally written by Eric Young, and is NOT       */
/* licensed under the GPL. Please adhere the original copyright notice below. */
/*----------------------------------------------------------------------------*/

/* 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 "ripemd.h"

#undef c2nl
#define c2nl(c,l)	(l =(((u_int32_t)(*((c)++)))<<24), \
			 l|=(((u_int32_t)(*((c)++)))<<16), \
			 l|=(((u_int32_t)(*((c)++)))<< 8), \
			 l|=(((u_int32_t)(*((c)++)))    ))

#undef p_c2nl
#define p_c2nl(c,l,n)	{ \
			switch (n) { \
			case 0: l =((u_int32_t)(*((c)++)))<<24; \
			case 1: l|=((u_int32_t)(*((c)++)))<<16; \
			case 2: l|=((u_int32_t)(*((c)++)))<< 8; \
			case 3: l|=((u_int32_t)(*((c)++))); \
				} \
			}

#undef c2nl_p
/* NOTE the pointer is not incremented at the end of this */
#define c2nl_p(c,l,n)	{ \
			l=0; \
			(c)+=n; \
			switch (n) { \
			case 3: l =((u_int32_t)(*(--(c))))<< 8; \
			case 2: l|=((u_int32_t)(*(--(c))))<<16; \
			case 1: l|=((u_int32_t)(*(--(c))))<<24; \
				} \
			}

#undef p_c2nl_p
#define p_c2nl_p(c,l,sc,len) { \
			switch (sc) \
				{ \
			case 0: l =((u_int32_t)(*((c)++)))<<24; \
				if (--len == 0) break; \
			case 1: l|=((u_int32_t)(*((c)++)))<<16; \
				if (--len == 0) break; \
			case 2: l|=((u_int32_t)(*((c)++)))<< 8; \
				} \
			}

#undef nl2c
#define nl2c(l,c)	(*((c)++)=(unsigned char)(((l)>>24)&0xff), \
			 *((c)++)=(unsigned char)(((l)>>16)&0xff), \
			 *((c)++)=(unsigned char)(((l)>> 8)&0xff), \
			 *((c)++)=(unsigned char)(((l)    )&0xff))

#undef c2l
#define c2l(c,l)	(l =(((u_int32_t)(*((c)++)))    ), \
			 l|=(((u_int32_t)(*((c)++)))<< 8), \
			 l|=(((u_int32_t)(*((c)++)))<<16), \
			 l|=(((u_int32_t)(*((c)++)))<<24))

#undef p_c2l
#define p_c2l(c,l,n)	{ \
			switch (n) { \
			case 0: l =((u_int32_t)(*((c)++))); \
			case 1: l|=((u_int32_t)(*((c)++)))<< 8; \
			case 2: l|=((u_int32_t)(*((c)++)))<<16; \
			case 3: l|=((u_int32_t)(*((c)++)))<<24; \
				} \
			}

#undef c2l_p
/* NOTE the pointer is not incremented at the end of this */
#define c2l_p(c,l,n)	{ \
			l=0; \
			(c)+=n; \
			switch (n) { \
			case 3: l =((u_int32_t)(*(--(c))))<<16; \
			case 2: l|=((u_int32_t)(*(--(c))))<< 8; \
			case 1: l|=((u_int32_t)(*(--(c)))); \
				} \
			}

#undef p_c2l_p
#define p_c2l_p(c,l,sc,len) { \
			switch (sc) \
				{ \
			case 0: l =((u_int32_t)(*((c)++))); \
				if (--len == 0) break; \
			case 1: l|=((u_int32_t)(*((c)++)))<< 8; \
				if (--len == 0) break; \
			case 2: l|=((u_int32_t)(*((c)++)))<<16; \
				} \
			}

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

#undef ROTATE
#if defined(WIN32)
#define ROTATE(a,n)     _lrotl(a,n)
#else
#define ROTATE(a,n)     (((a)<<(n))|(((a)&0xffffffff)>>(32-(n))))
#endif

/* A nice byte order reversal from Wei Dai <weidai@eskimo.com> */
#if defined(WIN32)
/* 5 instructions with rotate instruction, else 9 */
#define Endian_Reverse32(a) \
	{ \
	u_int32_t l=(a); \
	(a)=((ROTATE(l,8)&0x00FF00FF)|(ROTATE(l,24)&0xFF00FF00)); \
	}
#else
/* 6 instructions with rotate instruction, else 8 */
#define Endian_Reverse32(a) \
	{ \
	u_int32_t l=(a); \
	l=(((l&0xFF00FF00)>>8L)|((l&0x00FF00FF)<<8L)); \
	(a)=ROTATE(l,16L); \
	}
#endif

#define F1(x,y,z)	 ((x)^(y)^(z))
#define F2(x,y,z)	(((x)&(y))|((~x)&z))
#define F3(x,y,z)	(((x)|(~y))^(z))
#define F4(x,y,z)	(((x)&(z))|((y)&(~(z))))
#define F5(x,y,z)	 ((x)^((y)|(~(z))))

#define RIPEMD160_A	0x67452301L
#define RIPEMD160_B	0xEFCDAB89L
#define RIPEMD160_C	0x98BADCFEL
#define RIPEMD160_D	0x10325476L
#define RIPEMD160_E	0xC3D2E1F0L

#include "rmdconst.h"

#define RIP1(a,b,c,d,e,w,s) { \
	a+=F1(b,c,d)+X[w]; \
        a=ROTATE(a,s)+e; \
        c=ROTATE(c,10); }

#define RIP2(a,b,c,d,e,w,s,K) { \
	a+=F2(b,c,d)+X[w]+K; \
        a=ROTATE(a,s)+e; \
        c=ROTATE(c,10); }

#define RIP3(a,b,c,d,e,w,s,K) { \
	a+=F3(b,c,d)+X[w]+K; \
        a=ROTATE(a,s)+e; \
        c=ROTATE(c,10); }

#define RIP4(a,b,c,d,e,w,s,K) { \
	a+=F4(b,c,d)+X[w]+K; \
        a=ROTATE(a,s)+e; \
        c=ROTATE(c,10); }

#define RIP5(a,b,c,d,e,w,s,K) { \
	a+=F5(b,c,d)+X[w]+K; \
        a=ROTATE(a,s)+e; \
        c=ROTATE(c,10); }

