/* 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.]
*/

/* ====================================================================
 * The Apache Software License, Version 1.1
 *
 * Copyright (c) 2000-2001 The Apache Software Foundation.  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.
 *
 * 3. The end-user documentation included with the redistribution,
 *    if any, must include the following acknowledgment:
 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowledgment may appear in the software itself,
 *    if and wherever such third-party acknowledgments normally appear.
 *
 * 4. The names "Apache" and "Apache Software Foundation" must
 *    not be used to endorse or promote products derived from this
 *    software without prior written permission. For written
 *    permission, please contact apache@apache.org.
 *
 * 5. Products derived from this software may not be called "Apache",
 *    nor may "Apache" appear in their name, without prior written
 *    permission of the Apache Software Foundation.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED 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 APACHE SOFTWARE FOUNDATION OR
 * ITS 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.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
*/


#ifndef WIN32
#include "apr_private.h"
#endif
#include "apr_strings.h"
#include "apr_crypt.h"
#include "apr_lib.h"

#if APR_HAVE_STRING_H
#include <string.h>
#endif
#if APR_HAVE_CRYPT_H
#include <crypt.h>
#endif
#if APR_HAVE_UNISTD_H
#include <unistd.h>
#endif

#if APR_HAVE_CRYPT_H /* use crypt if available */

char *apr_crypt(const char *key, const char *salt)
{
	return crypt( key, salt);
}

#elif USE_SSL_CRYPT /* use des_fcrypt from OpenSSL */

char *apr_crypt(const char *key, const char *salt)
{
	return des_fcrypt( key, salt);
}

#else

#ifndef DES_LONG
#define DES_LONG unsigned long
#endif

typedef unsigned char des_cblock[8];
typedef /* const */ unsigned char const_des_cblock[8];

typedef struct des_ks_struct
{
	union
	{
		des_cblock cblock;
		/* make sure things are correct size on machines with
		* 8 byte longs */
		DES_LONG deslong[2];
	} ks;
	int weak_key;
} des_key_schedule[16];

#define ITERATIONS 16
#define HALF_ITERATIONS 8

#define DES_KEY_SZ 	(sizeof(des_cblock))
#define DES_SCHEDULE_SZ (sizeof(des_key_schedule))

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

#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))


static int des_check_key=0;

static const unsigned char odd_parity[256]={
  1,  1,  2,  2,  4,  4,  7,  7,  8,  8, 11, 11, 13, 13, 14, 14,
 16, 16, 19, 19, 21, 21, 22, 22, 25, 25, 26, 26, 28, 28, 31, 31,
 32, 32, 35, 35, 37, 37, 38, 38, 41, 41, 42, 42, 44, 44, 47, 47,
 49, 49, 50, 50, 52, 52, 55, 55, 56, 56, 59, 59, 61, 61, 62, 62,
 64, 64, 67, 67, 69, 69, 70, 70, 73, 73, 74, 74, 76, 76, 79, 79,
 81, 81, 82, 82, 84, 84, 87, 87, 88, 88, 91, 91, 93, 93, 94, 94,
 97, 97, 98, 98,100,100,103,103,104,104,107,107,109,109,110,110,
112,112,115,115,117,117,118,118,121,121,122,122,124,124,127,127,
128,128,131,131,133,133,134,134,137,137,138,138,140,140,143,143,
145,145,146,146,148,148,151,151,152,152,155,155,157,157,158,158,
161,161,162,162,164,164,167,167,168,168,171,171,173,173,174,174,
176,176,179,179,181,181,182,182,185,185,186,186,188,188,191,191,
193,193,194,194,196,196,199,199,200,200,203,203,205,205,206,206,
208,208,211,211,213,213,214,214,217,217,218,218,220,220,223,223,
224,224,227,227,229,229,230,230,233,233,234,234,236,236,239,239,
241,241,242,242,244,244,247,247,248,248,251,251,253,253,254,254
};

static void des_set_odd_parity(des_cblock *key)
{
	int i;
	
	for (i=0; i<DES_KEY_SZ; i++)
		(*key)[i]=odd_parity[(*key)[i]];
}

static int des_check_key_parity(const_des_cblock *key)
{
	int i;
	
	for (i=0; i<DES_KEY_SZ; i++)
	{
		if ((*key)[i] != odd_parity[(*key)[i]])
			return(0);
	}
	return(1);
}

#define NUM_WEAK_KEY	16
static des_cblock weak_keys[NUM_WEAK_KEY]={
	/* weak keys */
	{0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01},
	{0xFE,0xFE,0xFE,0xFE,0xFE,0xFE,0xFE,0xFE},
	{0x1F,0x1F,0x1F,0x1F,0x0E,0x0E,0x0E,0x0E},
	{0xE0,0xE0,0xE0,0xE0,0xF1,0xF1,0xF1,0xF1},
	/* semi-weak keys */
	{0x01,0xFE,0x01,0xFE,0x01,0xFE,0x01,0xFE},
	{0xFE,0x01,0xFE,0x01,0xFE,0x01,0xFE,0x01},
	{0x1F,0xE0,0x1F,0xE0,0x0E,0xF1,0x0E,0xF1},
	{0xE0,0x1F,0xE0,0x1F,0xF1,0x0E,0xF1,0x0E},
	{0x01,0xE0,0x01,0xE0,0x01,0xF1,0x01,0xF1},
	{0xE0,0x01,0xE0,0x01,0xF1,0x01,0xF1,0x01},
	{0x1F,0xFE,0x1F,0xFE,0x0E,0xFE,0x0E,0xFE},
	{0xFE,0x1F,0xFE,0x1F,0xFE,0x0E,0xFE,0x0E},
	{0x01,0x1F,0x01,0x1F,0x01,0x0E,0x01,0x0E},
	{0x1F,0x01,0x1F,0x01,0x0E,0x01,0x0E,0x01},
	{0xE0,0xFE,0xE0,0xFE,0xF1,0xFE,0xF1,0xFE},
	{0xFE,0xE0,0xFE,0xE0,0xFE,0xF1,0xFE,0xF1}
};

int des_is_weak_key(const_des_cblock *key)
{
	int i;
	
	for (i=0; i<NUM_WEAK_KEY; i++)
	/* Added == 0 to comparison, I obviously don't run
	* this section very often :-(, thanks to
	* engineering@MorningStar.Com for the fix
	* eay 93/06/29
	* Another problem, I was comparing only the first 4
	* bytes, 97/03/18 */
	if (memcmp(weak_keys[i],key,sizeof(des_cblock)) == 0) return(1);
	return(0);
}

#if defined(WIN32) && defined(_MSC_VER)
#define	ROTATE(a,n)	(_lrotr(a,n))
#else
#define	ROTATE(a,n)	(((a)>>(n))+((a)<<(32-(n))))
#endif

#define PERM_OP(a,b,t,n,m) ((t)=((((a)>>(n))^(b))&(m)),\
	(b)^=(t),\
	(a)^=((t)<<(n)))
	
#define HPERM_OP(a,t,n,m) ((t)=((((a)<<(16-(n)))^(a))&(m)),\
	(a)=(a)^(t)^(t>>(16-(n))))

static const DES_LONG des_skb[8][64]=
{
	{
		/* for C bits (numbered as per FIPS 46) 1 2 3 4 5 6 */
		0x00000000L,0x00000010L,0x20000000L,0x20000010L,
		0x00010000L,0x00010010L,0x20010000L,0x20010010L,
		0x00000800L,0x00000810L,0x20000800L,0x20000810L,
		0x00010800L,0x00010810L,0x20010800L,0x20010810L,
		0x00000020L,0x00000030L,0x20000020L,0x20000030L,
		0x00010020L,0x00010030L,0x20010020L,0x20010030L,
		0x00000820L,0x00000830L,0x20000820L,0x20000830L,
		0x00010820L,0x00010830L,0x20010820L,0x20010830L,
		0x00080000L,0x00080010L,0x20080000L,0x20080010L,
		0x00090000L,0x00090010L,0x20090000L,0x20090010L,
		0x00080800L,0x00080810L,0x20080800L,0x20080810L,
		0x00090800L,0x00090810L,0x20090800L,0x20090810L,
		0x00080020L,0x00080030L,0x20080020L,0x20080030L,
		0x00090020L,0x00090030L,0x20090020L,0x20090030L,
		0x00080820L,0x00080830L,0x20080820L,0x20080830L,
		0x00090820L,0x00090830L,0x20090820L,0x20090830L,
	},
	{
		/* for C bits (numbered as per FIPS 46) 7 8 10 11 12 13 */
		0x00000000L,0x02000000L,0x00002000L,0x02002000L,
		0x00200000L,0x02200000L,0x00202000L,0x02202000L,
		0x00000004L,0x02000004L,0x00002004L,0x02002004L,
		0x00200004L,0x02200004L,0x00202004L,0x02202004L,
		0x00000400L,0x02000400L,0x00002400L,0x02002400L,
		0x00200400L,0x02200400L,0x00202400L,0x02202400L,
		0x00000404L,0x02000404L,0x00002404L,0x02002404L,
		0x00200404L,0x02200404L,0x00202404L,0x02202404L,
		0x10000000L,0x12000000L,0x10002000L,0x12002000L,
		0x10200000L,0x12200000L,0x10202000L,0x12202000L,
		0x10000004L,0x12000004L,0x10002004L,0x12002004L,
		0x10200004L,0x12200004L,0x10202004L,0x12202004L,
		0x10000400L,0x12000400L,0x10002400L,0x12002400L,
		0x10200400L,0x12200400L,0x10202400L,0x12202400L,
		0x10000404L,0x12000404L,0x10002404L,0x12002404L,
		0x10200404L,0x12200404L,0x10202404L,0x12202404L,
	},
	{
		/* for C bits (numbered as per FIPS 46) 14 15 16 17 19 20 */
		0x00000000L,0x00000001L,0x00040000L,0x00040001L,
		0x01000000L,0x01000001L,0x01040000L,0x01040001L,
		0x00000002L,0x00000003L,0x00040002L,0x00040003L,
		0x01000002L,0x01000003L,0x01040002L,0x01040003L,
		0x00000200L,0x00000201L,0x00040200L,0x00040201L,
		0x01000200L,0x01000201L,0x01040200L,0x01040201L,
		0x00000202L,0x00000203L,0x00040202L,0x00040203L,
		0x01000202L,0x01000203L,0x01040202L,0x01040203L,
		0x08000000L,0x08000001L,0x08040000L,0x08040001L,
		0x09000000L,0x09000001L,0x09040000L,0x09040001L,
		0x08000002L,0x08000003L,0x08040002L,0x08040003L,
		0x09000002L,0x09000003L,0x09040002L,0x09040003L,
		0x08000200L,0x08000201L,0x08040200L,0x08040201L,
		0x09000200L,0x09000201L,0x09040200L,0x09040201L,
		0x08000202L,0x08000203L,0x08040202L,0x08040203L,
		0x09000202L,0x09000203L,0x09040202L,0x09040203L,
	},
	{
		/* for C bits (numbered as per FIPS 46) 21 23 24 26 27 28 */
		0x00000000L,0x00100000L,0x00000100L,0x00100100L,
		0x00000008L,0x00100008L,0x00000108L,0x00100108L,
		0x00001000L,0x00101000L,0x00001100L,0x00101100L,
		0x00001008L,0x00101008L,0x00001108L,0x00101108L,
		0x04000000L,0x04100000L,0x04000100L,0x04100100L,
		0x04000008L,0x04100008L,0x04000108L,0x04100108L,
		0x04001000L,0x04101000L,0x04001100L,0x04101100L,
		0x04001008L,0x04101008L,0x04001108L,0x04101108L,
		0x00020000L,0x00120000L,0x00020100L,0x00120100L,
		0x00020008L,0x00120008L,0x00020108L,0x00120108L,
		0x00021000L,0x00121000L,0x00021100L,0x00121100L,
		0x00021008L,0x00121008L,0x00021108L,0x00121108L,
		0x04020000L,0x04120000L,0x04020100L,0x04120100L,
		0x04020008L,0x04120008L,0x04020108L,0x04120108L,
		0x04021000L,0x04121000L,0x04021100L,0x04121100L,
		0x04021008L,0x04121008L,0x04021108L,0x04121108L,
	},
	{
		/* for D bits (numbered as per FIPS 46) 1 2 3 4 5 6 */
		0x00000000L,0x10000000L,0x00010000L,0x10010000L,
		0x00000004L,0x10000004L,0x00010004L,0x10010004L,
		0x20000000L,0x30000000L,0x20010000L,0x30010000L,
		0x20000004L,0x30000004L,0x20010004L,0x30010004L,
		0x00100000L,0x10100000L,0x00110000L,0x10110000L,
		0x00100004L,0x10100004L,0x00110004L,0x10110004L,
		0x20100000L,0x30100000L,0x20110000L,0x30110000L,
		0x20100004L,0x30100004L,0x20110004L,0x30110004L,
		0x00001000L,0x10001000L,0x00011000L,0x10011000L,
		0x00001004L,0x10001004L,0x00011004L,0x10011004L,
		0x20001000L,0x30001000L,0x20011000L,0x30011000L,
		0x20001004L,0x30001004L,0x20011004L,0x30011004L,
		0x00101000L,0x10101000L,0x00111000L,0x10111000L,
		0x00101004L,0x10101004L,0x00111004L,0x10111004L,
		0x20101000L,0x30101000L,0x20111000L,0x30111000L,
		0x20101004L,0x30101004L,0x20111004L,0x30111004L,
	},
	{
		/* for D bits (numbered as per FIPS 46) 8 9 11 12 13 14 */
		0x00000000L,0x08000000L,0x00000008L,0x08000008L,
		0x00000400L,0x08000400L,0x00000408L,0x08000408L,
		0x00020000L,0x08020000L,0x00020008L,0x08020008L,
		0x00020400L,0x08020400L,0x00020408L,0x08020408L,
		0x00000001L,0x08000001L,0x00000009L,0x08000009L,
		0x00000401L,0x08000401L,0x00000409L,0x08000409L,
		0x00020001L,0x08020001L,0x00020009L,0x08020009L,
		0x00020401L,0x08020401L,0x00020409L,0x08020409L,
		0x02000000L,0x0A000000L,0x02000008L,0x0A000008L,
		0x02000400L,0x0A000400L,0x02000408L,0x0A000408L,
		0x02020000L,0x0A020000L,0x02020008L,0x0A020008L,
		0x02020400L,0x0A020400L,0x02020408L,0x0A020408L,
		0x02000001L,0x0A000001L,0x02000009L,0x0A000009L,
		0x02000401L,0x0A000401L,0x02000409L,0x0A000409L,
		0x02020001L,0x0A020001L,0x02020009L,0x0A020009L,
		0x02020401L,0x0A020401L,0x02020409L,0x0A020409L,
	},
	{
		/* for D bits (numbered as per FIPS 46) 16 17 18 19 20 21 */
		0x00000000L,0x00000100L,0x00080000L,0x00080100L,
		0x01000000L,0x01000100L,0x01080000L,0x01080100L,
		0x00000010L,0x00000110L,0x00080010L,0x00080110L,
		0x01000010L,0x01000110L,0x01080010L,0x01080110L,
		0x00200000L,0x00200100L,0x00280000L,0x00280100L,
		0x01200000L,0x01200100L,0x01280000L,0x01280100L,
		0x00200010L,0x00200110L,0x00280010L,0x00280110L,
		0x01200010L,0x01200110L,0x01280010L,0x01280110L,
		0x00000200L,0x00000300L,0x00080200L,0x00080300L,
		0x01000200L,0x01000300L,0x01080200L,0x01080300L,
		0x00000210L,0x00000310L,0x00080210L,0x00080310L,
		0x01000210L,0x01000310L,0x01080210L,0x01080310L,
		0x00200200L,0x00200300L,0x00280200L,0x00280300L,
		0x01200200L,0x01200300L,0x01280200L,0x01280300L,
		0x00200210L,0x00200310L,0x00280210L,0x00280310L,
		0x01200210L,0x01200310L,0x01280210L,0x01280310L,
	},
	{
		/* for D bits (numbered as per FIPS 46) 22 23 24 25 27 28 */
		0x00000000L,0x04000000L,0x00040000L,0x04040000L,
		0x00000002L,0x04000002L,0x00040002L,0x04040002L,
		0x00002000L,0x04002000L,0x00042000L,0x04042000L,
		0x00002002L,0x04002002L,0x00042002L,0x04042002L,
		0x00000020L,0x04000020L,0x00040020L,0x04040020L,
		0x00000022L,0x04000022L,0x00040022L,0x04040022L,
		0x00002020L,0x04002020L,0x00042020L,0x04042020L,
		0x00002022L,0x04002022L,0x00042022L,0x04042022L,
		0x00000800L,0x04000800L,0x00040800L,0x04040800L,
		0x00000802L,0x04000802L,0x00040802L,0x04040802L,
		0x00002800L,0x04002800L,0x00042800L,0x04042800L,
		0x00002802L,0x04002802L,0x00042802L,0x04042802L,
		0x00000820L,0x04000820L,0x00040820L,0x04040820L,
		0x00000822L,0x04000822L,0x00040822L,0x04040822L,
		0x00002820L,0x04002820L,0x00042820L,0x04042820L,
		0x00002822L,0x04002822L,0x00042822L,0x04042822L,
	}
};

const DES_LONG des_SPtrans[8][64]=
{
	{
		/* nibble 0 */
		0x02080800L, 0x00080000L, 0x02000002L, 0x02080802L,
		0x02000000L, 0x00080802L, 0x00080002L, 0x02000002L,
		0x00080802L, 0x02080800L, 0x02080000L, 0x00000802L,
		0x02000802L, 0x02000000L, 0x00000000L, 0x00080002L,
		0x00080000L, 0x00000002L, 0x02000800L, 0x00080800L,
		0x02080802L, 0x02080000L, 0x00000802L, 0x02000800L,
		0x00000002L, 0x00000800L, 0x00080800L, 0x02080002L,
		0x00000800L, 0x02000802L, 0x02080002L, 0x00000000L,
		0x00000000L, 0x02080802L, 0x02000800L, 0x00080002L,
		0x02080800L, 0x00080000L, 0x00000802L, 0x02000800L,
		0x02080002L, 0x00000800L, 0x00080800L, 0x02000002L,
		0x00080802L, 0x00000002L, 0x02000002L, 0x02080000L,
		0x02080802L, 0x00080800L, 0x02080000L, 0x02000802L,
		0x02000000L, 0x00000802L, 0x00080002L, 0x00000000L,
		0x00080000L, 0x02000000L, 0x02000802L, 0x02080800L,
		0x00000002L, 0x02080002L, 0x00000800L, 0x00080802L,
	},
	{
		/* nibble 1 */
		0x40108010L, 0x00000000L, 0x00108000L, 0x40100000L,
		0x40000010L, 0x00008010L, 0x40008000L, 0x00108000L,
		0x00008000L, 0x40100010L, 0x00000010L, 0x40008000L,
		0x00100010L, 0x40108000L, 0x40100000L, 0x00000010L,
		0x00100000L, 0x40008010L, 0x40100010L, 0x00008000L,
		0x00108010L, 0x40000000L, 0x00000000L, 0x00100010L,
		0x40008010L, 0x00108010L, 0x40108000L, 0x40000010L,
		0x40000000L, 0x00100000L, 0x00008010L, 0x40108010L,
		0x00100010L, 0x40108000L, 0x40008000L, 0x00108010L,
		0x40108010L, 0x00100010L, 0x40000010L, 0x00000000L,
		0x40000000L, 0x00008010L, 0x00100000L, 0x40100010L,
		0x00008000L, 0x40000000L, 0x00108010L, 0x40008010L,
		0x40108000L, 0x00008000L, 0x00000000L, 0x40000010L,
		0x00000010L, 0x40108010L, 0x00108000L, 0x40100000L,
		0x40100010L, 0x00100000L, 0x00008010L, 0x40008000L,
		0x40008010L, 0x00000010L, 0x40100000L, 0x00108000L,
	},
	{
		/* nibble 2 */
		0x04000001L, 0x04040100L, 0x00000100L, 0x04000101L,
		0x00040001L, 0x04000000L, 0x04000101L, 0x00040100L,
		0x04000100L, 0x00040000L, 0x04040000L, 0x00000001L,
		0x04040101L, 0x00000101L, 0x00000001L, 0x04040001L,
		0x00000000L, 0x00040001L, 0x04040100L, 0x00000100L,
		0x00000101L, 0x04040101L, 0x00040000L, 0x04000001L,
		0x04040001L, 0x04000100L, 0x00040101L, 0x04040000L,
		0x00040100L, 0x00000000L, 0x04000000L, 0x00040101L,
		0x04040100L, 0x00000100L, 0x00000001L, 0x00040000L,
		0x00000101L, 0x00040001L, 0x04040000L, 0x04000101L,
		0x00000000L, 0x04040100L, 0x00040100L, 0x04040001L,
		0x00040001L, 0x04000000L, 0x04040101L, 0x00000001L,
		0x00040101L, 0x04000001L, 0x04000000L, 0x04040101L,
		0x00040000L, 0x04000100L, 0x04000101L, 0x00040100L,
		0x04000100L, 0x00000000L, 0x04040001L, 0x00000101L,
		0x04000001L, 0x00040101L, 0x00000100L, 0x04040000L,
	},
	{
		/* nibble 3 */
		0x00401008L, 0x10001000L, 0x00000008L, 0x10401008L,
		0x00000000L, 0x10400000L, 0x10001008L, 0x00400008L,
		0x10401000L, 0x10000008L, 0x10000000L, 0x00001008L,
		0x10000008L, 0x00401008L, 0x00400000L, 0x10000000L,
		0x10400008L, 0x00401000L, 0x00001000L, 0x00000008L,
		0x00401000L, 0x10001008L, 0x10400000L, 0x00001000L,
		0x00001008L, 0x00000000L, 0x00400008L, 0x10401000L,
		0x10001000L, 0x10400008L, 0x10401008L, 0x00400000L,
		0x10400008L, 0x00001008L, 0x00400000L, 0x10000008L,
		0x00401000L, 0x10001000L, 0x00000008L, 0x10400000L,
		0x10001008L, 0x00000000L, 0x00001000L, 0x00400008L,
		0x00000000L, 0x10400008L, 0x10401000L, 0x00001000L,
		0x10000000L, 0x10401008L, 0x00401008L, 0x00400000L,
		0x10401008L, 0x00000008L, 0x10001000L, 0x00401008L,
		0x00400008L, 0x00401000L, 0x10400000L, 0x10001008L,
		0x00001008L, 0x10000000L, 0x10000008L, 0x10401000L,
	},
	{
		/* nibble 4 */
		0x08000000L, 0x00010000L, 0x00000400L, 0x08010420L,
		0x08010020L, 0x08000400L, 0x00010420L, 0x08010000L,
		0x00010000L, 0x00000020L, 0x08000020L, 0x00010400L,
		0x08000420L, 0x08010020L, 0x08010400L, 0x00000000L,
		0x00010400L, 0x08000000L, 0x00010020L, 0x00000420L,
		0x08000400L, 0x00010420L, 0x00000000L, 0x08000020L,
		0x00000020L, 0x08000420L, 0x08010420L, 0x00010020L,
		0x08010000L, 0x00000400L, 0x00000420L, 0x08010400L,
		0x08010400L, 0x08000420L, 0x00010020L, 0x08010000L,
		0x00010000L, 0x00000020L, 0x08000020L, 0x08000400L,
		0x08000000L, 0x00010400L, 0x08010420L, 0x00000000L,
		0x00010420L, 0x08000000L, 0x00000400L, 0x00010020L,
		0x08000420L, 0x00000400L, 0x00000000L, 0x08010420L,
		0x08010020L, 0x08010400L, 0x00000420L, 0x00010000L,
		0x00010400L, 0x08010020L, 0x08000400L, 0x00000420L,
		0x00000020L, 0x00010420L, 0x08010000L, 0x08000020L,
	},
	{
		/* nibble 5 */
		0x80000040L, 0x00200040L, 0x00000000L, 0x80202000L,
		0x00200040L, 0x00002000L, 0x80002040L, 0x00200000L,
		0x00002040L, 0x80202040L, 0x00202000L, 0x80000000L,
		0x80002000L, 0x80000040L, 0x80200000L, 0x00202040L,
		0x00200000L, 0x80002040L, 0x80200040L, 0x00000000L,
		0x00002000L, 0x00000040L, 0x80202000L, 0x80200040L,
		0x80202040L, 0x80200000L, 0x80000000L, 0x00002040L,
		0x00000040L, 0x00202000L, 0x00202040L, 0x80002000L,
		0x00002040L, 0x80000000L, 0x80002000L, 0x00202040L,
		0x80202000L, 0x00200040L, 0x00000000L, 0x80002000L,
		0x80000000L, 0x00002000L, 0x80200040L, 0x00200000L,
		0x00200040L, 0x80202040L, 0x00202000L, 0x00000040L,
		0x80202040L, 0x00202000L, 0x00200000L, 0x80002040L,
		0x80000040L, 0x80200000L, 0x00202040L, 0x00000000L,
		0x00002000L, 0x80000040L, 0x80002040L, 0x80202000L,
		0x80200000L, 0x00002040L, 0x00000040L, 0x80200040L,
	},
	{
		/* nibble 6 */
		0x00004000L, 0x00000200L, 0x01000200L, 0x01000004L,
		0x01004204L, 0x00004004L, 0x00004200L, 0x00000000L,
		0x01000000L, 0x01000204L, 0x00000204L, 0x01004000L,
		0x00000004L, 0x01004200L, 0x01004000L, 0x00000204L,
		0x01000204L, 0x00004000L, 0x00004004L, 0x01004204L,
		0x00000000L, 0x01000200L, 0x01000004L, 0x00004200L,
		0x01004004L, 0x00004204L, 0x01004200L, 0x00000004L,
		0x00004204L, 0x01004004L, 0x00000200L, 0x01000000L,
		0x00004204L, 0x01004000L, 0x01004004L, 0x00000204L,
		0x00004000L, 0x00000200L, 0x01000000L, 0x01004004L,
		0x01000204L, 0x00004204L, 0x00004200L, 0x00000000L,
		0x00000200L, 0x01000004L, 0x00000004L, 0x01000200L,
		0x00000000L, 0x01000204L, 0x01000200L, 0x00004200L,
		0x00000204L, 0x00004000L, 0x01004204L, 0x01000000L,
		0x01004200L, 0x00000004L, 0x00004004L, 0x01004204L,
		0x01000004L, 0x01004200L, 0x01004000L, 0x00004004L,
	},
	{
		/* nibble 7 */
		0x20800080L, 0x20820000L, 0x00020080L, 0x00000000L,
		0x20020000L, 0x00800080L, 0x20800000L, 0x20820080L,
		0x00000080L, 0x20000000L, 0x00820000L, 0x00020080L,
		0x00820080L, 0x20020080L, 0x20000080L, 0x20800000L,
		0x00020000L, 0x00820080L, 0x00800080L, 0x20020000L,
		0x20820080L, 0x20000080L, 0x00000000L, 0x00820000L,
		0x20000000L, 0x00800000L, 0x20020080L, 0x20800080L,
		0x00800000L, 0x00020000L, 0x20820000L, 0x00000080L,
		0x00800000L, 0x00020000L, 0x20000080L, 0x20820080L,
		0x00020080L, 0x20000000L, 0x00000000L, 0x00820000L,
		0x20800080L, 0x20020080L, 0x20020000L, 0x00800080L,
		0x20820000L, 0x00000080L, 0x00800080L, 0x20020000L,
		0x20820080L, 0x00800000L, 0x20800000L, 0x20000080L,
		0x00820000L, 0x00020080L, 0x20020080L, 0x20800000L,
		0x00000080L, 0x20820000L, 0x00820080L, 0x00000000L,
		0x20000000L, 0x20800080L, 0x00020000L, 0x00820080L,
	}
};

void des_set_key_unchecked(const_des_cblock *key, des_key_schedule schedule)
{
	static int shifts2[16]={0,0,1,1,1,1,1,1,0,1,1,1,1,1,1,0};
	register DES_LONG c,d,t,s,t2;
	register const unsigned char *in;
	register DES_LONG *k;
	register int i;
	
	k = &schedule->ks.deslong[0];
	in = &(*key)[0];
	
	c2l(in,c);
	c2l(in,d);
	
	/* do PC1 in 47 simple operations :-)
	* Thanks to John Fletcher (john_fletcher@lccmail.ocf.llnl.gov)
	* for the inspiration. :-) */
	PERM_OP (d,c,t,4,0x0f0f0f0fL);
	HPERM_OP(c,t,-2,0xcccc0000L);
	HPERM_OP(d,t,-2,0xcccc0000L);
	PERM_OP (d,c,t,1,0x55555555L);
	PERM_OP (c,d,t,8,0x00ff00ffL);
	PERM_OP (d,c,t,1,0x55555555L);
	d=	(((d&0x000000ffL)<<16L)| (d&0x0000ff00L)     |
		((d&0x00ff0000L)>>16L)|((c&0xf0000000L)>>4L));
	c&=0x0fffffffL;
	
	for (i=0; i<ITERATIONS; i++)
	{
		if (shifts2[i])
		{ c=((c>>2L)|(c<<26L)); d=((d>>2L)|(d<<26L)); }
		else
		{ c=((c>>1L)|(c<<27L)); d=((d>>1L)|(d<<27L)); }
		c&=0x0fffffffL;
		d&=0x0fffffffL;
		/* could be a few less shifts but I am to lazy at this
		* point in time to investigate */
		s=	des_skb[0][ (c    )&0x3f                ]|
			des_skb[1][((c>> 6L)&0x03)|((c>> 7L)&0x3c)]|
			des_skb[2][((c>>13L)&0x0f)|((c>>14L)&0x30)]|
			des_skb[3][((c>>20L)&0x01)|((c>>21L)&0x06) |
			((c>>22L)&0x38)];
		t=	des_skb[4][ (d    )&0x3f                ]|
			des_skb[5][((d>> 7L)&0x03)|((d>> 8L)&0x3c)]|
			des_skb[6][ (d>>15L)&0x3f                ]|
			des_skb[7][((d>>21L)&0x0f)|((d>>22L)&0x30)];
		
		/* table contained 0213 4657 */
		t2=((t<<16L)|(s&0x0000ffffL))&0xffffffffL;
		*(k++)=ROTATE(t2,30)&0xffffffffL;
		
		t2=((s>>16L)|(t&0xffff0000L));
		*(k++)=ROTATE(t2,26)&0xffffffffL;
	}
}

int des_set_key_checked(const_des_cblock *key, des_key_schedule schedule)
{
	if (!des_check_key_parity(key))
		return(-1);
	if (des_is_weak_key(key))
		return(-2);
	des_set_key_unchecked(key, schedule);
	return 0;
}

int des_set_key(const_des_cblock *key, des_key_schedule schedule)
{
	if (des_check_key)
	{
		return des_set_key_checked(key, schedule);
	}
	else
	{
		des_set_key_unchecked(key, schedule);
		return 0;
	}
}

#define LOAD_DATA_tmp(R,S,u,t,E0,E1) \
	{ DES_LONG tmp; LOAD_DATA(R,S,u,t,E0,E1,tmp); }

#define LOAD_DATA(R,S,u,t,E0,E1,tmp) \
	t=R^(R>>16L); \
	u=t&E0; t&=E1; \
	tmp=(u<<16); u^=R^s[S  ]; u^=tmp; \
	tmp=(t<<16); t^=R^s[S+1]; t^=tmp


#define D_ENCRYPT(LL,R,S) {\
	LOAD_DATA_tmp(R,S,u,t,E0,E1); \
	t=ROTATE(t,4); \
	LL^=\
		des_SPtrans[0][(u>> 2L)&0x3f]^ \
		des_SPtrans[2][(u>>10L)&0x3f]^ \
		des_SPtrans[4][(u>>18L)&0x3f]^ \
		des_SPtrans[6][(u>>26L)&0x3f]^ \
		des_SPtrans[1][(t>> 2L)&0x3f]^ \
		des_SPtrans[3][(t>>10L)&0x3f]^ \
		des_SPtrans[5][(t>>18L)&0x3f]^ \
		des_SPtrans[7][(t>>26L)&0x3f]; }

void fcrypt_body(DES_LONG *out, des_key_schedule ks, DES_LONG Eswap0,
				 DES_LONG Eswap1)
{
	register DES_LONG l,r,t,u;
	register DES_LONG *s;
	register int j;
	register DES_LONG E0,E1;
	
	l=0;
	r=0;
	
	s=(DES_LONG *)ks;
	E0=Eswap0;
	E1=Eswap1;
	
	for (j=0; j<25; j++)
	{
		register int i;
		
		for (i=0; i<32; i+=8)
		{
			D_ENCRYPT(l,r,i+0); /*  1 */
			D_ENCRYPT(r,l,i+2); /*  2 */
			D_ENCRYPT(l,r,i+4); /*  1 */
			D_ENCRYPT(r,l,i+6); /*  2 */
		}
		t=l;
		l=r;
		r=t;
	}
	l=ROTATE(l,3)&0xffffffffL;
	r=ROTATE(r,3)&0xffffffffL;
	
	PERM_OP(l,r,t, 1,0x55555555L);
	PERM_OP(r,l,t, 8,0x00ff00ffL);
	PERM_OP(l,r,t, 2,0x33333333L);
	PERM_OP(r,l,t,16,0x0000ffffL);
	PERM_OP(l,r,t, 4,0x0f0f0f0fL);
	
	out[0]=r;
	out[1]=l;
}

static unsigned const char con_salt[128]={
	0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,
	0xDA,0xDB,0xDC,0xDD,0xDE,0xDF,0xE0,0xE1,
	0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,
	0xEA,0xEB,0xEC,0xED,0xEE,0xEF,0xF0,0xF1,
	0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,
	0xFA,0xFB,0xFC,0xFD,0xFE,0xFF,0x00,0x01,
	0x02,0x03,0x04,0x05,0x06,0x07,0x08,0x09,
	0x0A,0x0B,0x05,0x06,0x07,0x08,0x09,0x0A,
	0x0B,0x0C,0x0D,0x0E,0x0F,0x10,0x11,0x12,
	0x13,0x14,0x15,0x16,0x17,0x18,0x19,0x1A,
	0x1B,0x1C,0x1D,0x1E,0x1F,0x20,0x21,0x22,
	0x23,0x24,0x25,0x20,0x21,0x22,0x23,0x24,
	0x25,0x26,0x27,0x28,0x29,0x2A,0x2B,0x2C,
	0x2D,0x2E,0x2F,0x30,0x31,0x32,0x33,0x34,
	0x35,0x36,0x37,0x38,0x39,0x3A,0x3B,0x3C,
	0x3D,0x3E,0x3F,0x40,0x41,0x42,0x43,0x44,
};

static unsigned const char cov_2char[64]={
	0x2E,0x2F,0x30,0x31,0x32,0x33,0x34,0x35,
	0x36,0x37,0x38,0x39,0x41,0x42,0x43,0x44,
	0x45,0x46,0x47,0x48,0x49,0x4A,0x4B,0x4C,
	0x4D,0x4E,0x4F,0x50,0x51,0x52,0x53,0x54,
	0x55,0x56,0x57,0x58,0x59,0x5A,0x61,0x62,
	0x63,0x64,0x65,0x66,0x67,0x68,0x69,0x6A,
	0x6B,0x6C,0x6D,0x6E,0x6F,0x70,0x71,0x72,
	0x73,0x74,0x75,0x76,0x77,0x78,0x79,0x7A
};

char *des_fcrypt(const char *buf, const char *salt, char *ret)
{
	unsigned int i,j,x,y;
	DES_LONG Eswap0,Eswap1;
	DES_LONG out[2],ll;
	des_cblock key;
	des_key_schedule ks;
	unsigned char bb[9];
	unsigned char *b=bb;
	unsigned char c,u;
	
	/* eay 25/08/92
	* If you call crypt("pwd","*") as often happens when you
	* have * as the pwd field in /etc/passwd, the function
	* returns *\0XXXXXXXXX
	* The \0 makes the string look like * so the pwd "*" would
	* crypt to "*".  This was found when replacing the crypt in
	* our shared libraries.  People found that the disabled
	* accounts effectively had no passwd :-(. */
#ifndef CHARSET_EBCDIC
	x=ret[0]=((salt[0] == '\0')?'A':salt[0]);
	Eswap0=con_salt[x]<<2;
	x=ret[1]=((salt[1] == '\0')?'A':salt[1]);
	Eswap1=con_salt[x]<<6;
#else
	x=ret[0]=((salt[0] == '\0')?os_toascii['A']:salt[0]);
	Eswap0=con_salt[x]<<2;
	x=ret[1]=((salt[1] == '\0')?os_toascii['A']:salt[1]);
	Eswap1=con_salt[x]<<6;
#endif
	
	/* EAY
	r=strlen(buf);
	r=(r+7)/8;
	*/
	for (i=0; i<8; i++)
	{
		c= *(buf++);
		if (!c) break;
		key[i]=(c<<1);
	}
	for (; i<8; i++)
		key[i]=0;
	
	des_set_key_unchecked(&key,ks);
	fcrypt_body(&(out[0]),ks,Eswap0,Eswap1);
	
	ll=out[0]; l2c(ll,b);
	ll=out[1]; l2c(ll,b);
	y=0;
	u=0x80;
	bb[8]=0;
	for (i=2; i<13; i++)
	{
		c=0;
		for (j=0; j<6; j++)
		{
			c<<=1;
			if (bb[y] & u) c|=1;
			u>>=1;
			if (!u)
			{
				y++;
				u=0x80;
			}
		}
		ret[i]=cov_2char[c];
	}
	ret[13]='\0';
	return(ret);
}

char *apr_crypt(const char *buf, const char *salt)
{
	static char buff[14];	
	return(des_fcrypt(buf,salt,buff));
}

#endif /* APR_HAVE_CRYPT_H */