des_locl.h

mp3 source code decoder & encoder

/* crypto/des/des_locl.h */
/* Copyright (C) 1995-1997 Eric Young ([e-mail])
 * All rights reserved.
 *
 * This package is an SSL implementation written
 * by Eric Young ([e-mail]).
 * 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 ([e-mail]).
 * 
 * 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 ([e-mail])"
 *    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 ([e-mail])"
 * 
 * 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.]
 */

/* WARNING WARNING WARNING WARNING WARNING WARNING WARNING WARNING WARNING
 *
 * Always modify des_locl.org since des_locl.h is automatically generated from
 * it during SSLeay configuration.
 *
 * WARNING WARNING WARNING WARNING WARNING WARNING WARNING WARNING WARNING
 */

#ifndef HEADER_DES_LOCL_H
#define HEADER_DES_LOCL_H

#if defined(WIN32) || defined(WIN16)
#ifndef MSDOS
#define MSDOS
#endif
#endif

#include <stdio.h>
#include <stdlib.h>
#ifndef MSDOS
#include <unistd.h>
#endif
#include "des.h"

#ifndef DES_DEFAULT_OPTIONS
/* the following is tweaked from a config script, that is why it is a
 * protected undef/define */
#ifndef DES_PTR
#undef DES_PTR
#endif

/* This helps C compiler generate the correct code for multiple functional
 * units.  It reduces register dependancies at the expense of 2 more
 * registers */
#ifndef DES_RISC1
#undef DES_RISC1
#endif

#ifndef DES_RISC2
#undef DES_RISC2
#endif

#if defined(DES_RISC1) && defined(DES_RISC2)
YOU SHOULD NOT HAVE BOTH DES_RISC1 AND DES_RISC2 DEFINED!!!!!
#endif

/* Unroll the inner loop, this sometimes helps, sometimes hinders.
 * Very mucy CPU dependant */
#ifndef DES_UNROLL
#undef DES_UNROLL
#endif

/* These default values were supplied by
 * Peter Gutman <[e-mail]>
 * They are only used if nothing else has been defined */
#if !defined(DES_PTR) && !defined(DES_RISC1) && !defined(DES_RISC2) && !defined(DES_UNROLL)
/* Special defines which change the way the code is built depending on the
   CPU and OS.  For SGI machines you can use _MIPS_SZLONG (32 or 64) to find
   even newer MIPS CPU's, but at the moment one size fits all for
   optimization options.  Older Sparc's work better with only UNROLL, but
   there's no way to tell at compile time what it is you're running on */
 
#if defined( sun )		/* Newer Sparc's */
  #define DES_PTR
  #define DES_RISC1
  #define DES_UNROLL
#elif defined( __ultrix )	/* Older MIPS */
  #define DES_PTR
  #define DES_RISC2
  #define DES_UNROLL
#elif defined( __osf1__ )	/* Alpha */
  #define DES_PTR
  #define DES_RISC2
#elif defined ( _AIX )		/* RS6000 */
  /* Unknown */
#elif defined( __hpux )		/* HP-PA */
  /* Unknown */
#elif defined( __aux )		/* 68K */
  /* Unknown */
#elif defined( __dgux )		/* 88K (but P6 in latest boxes) */
  #define DES_UNROLL
#elif defined( __sgi )		/* Newer MIPS */
  #define DES_PTR
  #define DES_RISC2
  #define DES_UNROLL
#elif defined( i386 )		/* x86 boxes, should be gcc */
  #define DES_PTR
  #define DES_RISC1
  #define DES_UNROLL
#endif /* Systems-specific speed defines */
#endif

#endif /* DES_DEFAULT_OPTIONS */

#ifdef MSDOS		/* Visual C++ 2.1 (Windows NT/95) */
#include <stdlib.h>
#include <errno.h>
#include <time.h>
#include <io.h>
#ifndef RAND
#define RAND
#endif
#undef NOPROTO
#endif

#if defined(__STDC__) || defined(VMS) || defined(M_XENIX) || defined(MSDOS)
#include <string.h>
#endif

#ifndef RAND
#define RAND
#endif

#ifdef linux
#undef RAND
#endif

#ifdef MSDOS
#define getpid() 2
#define RAND
#undef NOPROTO
#endif

#if defined(NOCONST)
#define const
#endif

#ifdef __STDC__
#undef NOPROTO
#endif

#ifdef RAND
#define srandom(s) srand(s)
#define random rand
#endif

#define ITERATIONS 16
#define HALF_ITERATIONS 8

/* used in des_read and des_write */
#define MAXWRITE	(1024*16)
#define BSIZE		(MAXWRITE+4)

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

/* NOTE - c is not incremented as per c2l */
#define c2ln(c,l1,l2,n)	{ \
			c+=n; \
			l1=l2=0; \
			switch (n) { \
			case 8: l2 =((DES_LONG)(*(--(c))))<<24L; \
			case 7: l2|=((DES_LONG)(*(--(c))))<<16L; \
			case 6: l2|=((DES_LONG)(*(--(c))))<< 8L; \
			case 5: l2|=((DES_LONG)(*(--(c))));     \
			case 4: l1 =((DES_LONG)(*(--(c))))<<24L; \
			case 3: l1|=((DES_LONG)(*(--(c))))<<16L; \
			case 2: l1|=((DES_LONG)(*(--(c))))<< 8L; \
			case 1: l1|=((DES_LONG)(*(--(c))));     \
				} \
			}

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

/* replacements for htonl and ntohl since I have no idea what to do
 * when faced with machines with 8 byte longs. */
#define HDRSIZE 4

#define n2l(c,l)	(l =((DES_LONG)(*((c)++)))<<24L, \
			 l|=((DES_LONG)(*((c)++)))<<16L, \
			 l|=((DES_LONG)(*((c)++)))<< 8L, \
			 l|=((DES_LONG)(*((c)++))))

#define l2n(l,c)	(*((c)++)=(unsigned char)(((l)>>24L)&0xff), \
			 *((c)++)=(unsigned char)(((l)>>16L)&0xff), \
			 *((c)++)=(unsigned char)(((l)>> 8L)&0xff), \
			 *((c)++)=(unsigned char)(((l)     )&0xff))

/* NOTE - c is not incremented as per l2c */
#define l2cn(l1,l2,c,n)	{ \
			c+=n; \
			switch (n) { \
			case 8: *(--(c))=(unsigned char)(((l2)>>24L)&0xff); \
			case 7: *(--(c))=(unsigned char)(((l2)>>16L)&0xff); \
			case 6: *(--(c))=(unsigned char)(((l2)>> 8L)&0xff); \
			case 5: *(--(c))=(unsigned char)(((l2)     )&0xff); \
			case 4: *(--(c))=(unsigned char)(((l1)>>24L)&0xff); \
			case 3: *(--(c))=(unsigned char)(((l1)>>16L)&0xff); \
			case 2: *(--(c))=(unsigned char)(((l1)>> 8L)&0xff); \
			case 1: *(--(c))=(unsigned char)(((l1)     )&0xff); \
				} \
			}