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/*
* Copyright (C) 1996
* Brandon Gillespie. 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 Brandon Gillespie AND CONTRIBUTORS ``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 Brandon Gillespie 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.
*
*/
/*
// --------------------------------------------------------------------------
// to add a new algorithm, have it export the function 'crypt_<algo>'
// (where <algo> is whichever algorithm, such as 'des' or 'md5), with
// the arguments ordered as follows, and the return value 'char *':
//
// register const unsigned char * -- word to encrypt
// const unsigned int -- length of word to encrypt
// register const unsigned char * -- salt to encrypt with
// const unsigned int -- salt length
// char * -- output buffer, _CRYPT_OUTPUT_SIZE max
// char * -- identifier token
//
// such as:
//
// char *
// crypt_des(register const unsigned char *pw,
// const unsigned int pl,
// register const unsigned char *sp,
// const unsigned int sl,
// char * passwd,
// char * token);
//
// Prototype the function below, include libraries here.
// You can use the macro CRYPT_HOOK() to make it easy.
*/
#include <md5.h>
#include <pwd.h>
#include "shs.h"
#define _DES_CRYPT 0
#define _MD5_CRYPT 1
#define _MD5_CRYPT_OLD 3
#define _BF_CRYPT 2
#define _BF_CRYPT_OpenBSD 4
#define _SHS_CRYPT 5
/*
// --------------------------------------------------------------------------
// Prototypes
*/
#define _CRYPT_HOOK(_type_) \
char * crypt_ ## _type_ ( \
register const unsigned char * pw, \
const unsigned int pl, \
register const unsigned char * sw, \
const unsigned int sp, \
char * passwd, \
char * token)
#ifdef DES_CRYPT
_CRYPT_HOOK(des);
#endif
_CRYPT_HOOK(md5);
_CRYPT_HOOK(shs);
#undef _CRYPT_HOOK
/*
// --------------------------------------------------------------------------
// What is the default?
*/
#ifdef _CRYPT_DEFAULT_DES
/* use the 'best' encryption */
/* currently SHA-1 */
#define _CRYPT_DEFAULT_VERSION _SHS_CRYPT
#else
/* else use DES encryption */
#define _CRYPT_DEFAULT_VERSION _DES_CRYPT
#endif
/*
// --------------------------------------------------------------------------
// other unimportant magic, enlarge as algorithms warrant, do not reduce.
*/
/* largest size of encrypted password */
#define _CRYPT_OUTPUT_SIZE _PASSWORD_LEN
#define _CRYPT_MAX_SALT_LEN 24 /* token=5 salt=16 extra=4 */
/* magic sizes not defined elsewhere, cleaner through defs */
#define _MD5_SIZE 16
#define _SHS_SIZE 20
#ifndef _CRYPT_C_
extern void to64(char * s, unsigned long v, int n);
#endif
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