greenplumn px-crypt 源码
greenplumn px-crypt 代码
文件路径：/contrib/pgcrypto/px-crypt.h
/*
* px-crypt.h
* Header file for px_crypt().
*
* Copyright (c) 2001 Marko Kreen
* 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 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 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.
*
* contrib/pgcrypto/px-crypt.h
*/
#ifndef _PX_CRYPT_H
#define _PX_CRYPT_H
/* max room for result */
#define PX_MAX_CRYPT 128
/* max salt returned by gen_salt() */
#define PX_MAX_SALT_LEN 128
/* default rounds for xdes salt */
/* NetBSD bin/passwd/local_passwd.c has (29 * 25)*/
#define PX_XDES_ROUNDS (29 * 25)
/* default for blowfish salt */
#define PX_BF_ROUNDS 6
/*
* main interface
*/
char *px_crypt(const char *psw, const char *salt, char *buf, unsigned buflen);
int px_gen_salt(const char *salt_type, char *dst, int rounds);
/*
* internal functions
*/
/* crypt-gensalt.c */
char *_crypt_gensalt_traditional_rn(unsigned long count,
const char *input, int size, char *output, int output_size);
char *_crypt_gensalt_extended_rn(unsigned long count,
const char *input, int size, char *output, int output_size);
char *_crypt_gensalt_md5_rn(unsigned long count,
const char *input, int size, char *output, int output_size);
char *_crypt_gensalt_blowfish_rn(unsigned long count,
const char *input, int size, char *output, int output_size);
/* disable 'extended DES crypt' */
/* #define DISABLE_XDES */
/* crypt-blowfish.c */
char *_crypt_blowfish_rn(const char *key, const char *setting,
char *output, int size);
/* crypt-des.c */
char *px_crypt_des(const char *key, const char *setting);
/* crypt-md5.c */
char *px_crypt_md5(const char *pw, const char *salt,
char *dst, unsigned dstlen);
#endif /* _PX_CRYPT_H */
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