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This adapts the publicly available reference implementation on https://www.akkadia.org/drepper/SHA-crypt.txt and adds the new hash algorithms sha256crypt and sha512crypt to crypt() and gen_salt() respectively. Author: Bernd Helmle <mailings@oopsware.de> Reviewed-by: Japin Li <japinli@hotmail.com> Discussion: https://postgr.es/m/c763235a2757e2f5f9e3e27268b9028349cef659.camel@oopsware.de
114 lines
4.0 KiB
C
114 lines
4.0 KiB
C
/*
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* px-crypt.h
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* Header file for px_crypt().
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*
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* Copyright (c) 2001 Marko Kreen
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* contrib/pgcrypto/px-crypt.h
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*/
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#ifndef _PX_CRYPT_H
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#define _PX_CRYPT_H
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/* max room for result */
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#define PX_MAX_CRYPT 128
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/* max salt returned by gen_salt() */
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#define PX_MAX_SALT_LEN 128
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/* default rounds for xdes salt */
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/* NetBSD bin/passwd/local_passwd.c has (29 * 25)*/
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#define PX_XDES_ROUNDS (29 * 25)
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/* default for blowfish salt */
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#define PX_BF_ROUNDS 6
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/* Maximum salt string length of shacrypt. */
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#define PX_SHACRYPT_SALT_MAX_LEN 16
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/* SHA buffer length */
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#define PX_SHACRYPT_DIGEST_MAX_LEN 64
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/* calculated buffer size of a buffer to store a shacrypt salt string */
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#define PX_SHACRYPT_SALT_BUF_LEN (3 + 7 + 10 + PX_SHACRYPT_SALT_MAX_LEN + 1)
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/*
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* calculated buffer size of a buffer to store complete result of a shacrypt
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* digest including salt
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*/
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#define PX_SHACRYPT_BUF_LEN (PX_SHACRYPT_SALT_BUF_LEN + 86 + 1)
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/* Default number of rounds of shacrypt if not explicitly specified. */
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#define PX_SHACRYPT_ROUNDS_DEFAULT 5000
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/* Minimum number of rounds of shacrypt. */
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#define PX_SHACRYPT_ROUNDS_MIN 1000
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/* Maximum number of rounds of shacrypt. */
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#define PX_SHACRYPT_ROUNDS_MAX 999999999
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/*
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* main interface
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*/
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char *px_crypt(const char *psw, const char *salt, char *buf, unsigned len);
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int px_gen_salt(const char *salt_type, char *buf, int rounds);
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/*
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* internal functions
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*/
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/* crypt-gensalt.c */
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char *_crypt_gensalt_traditional_rn(unsigned long count,
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const char *input, int size, char *output, int output_size);
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char *_crypt_gensalt_extended_rn(unsigned long count,
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const char *input, int size, char *output, int output_size);
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char *_crypt_gensalt_md5_rn(unsigned long count,
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const char *input, int size, char *output, int output_size);
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char *_crypt_gensalt_blowfish_rn(unsigned long count,
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const char *input, int size, char *output, int output_size);
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char *_crypt_gensalt_sha256_rn(unsigned long count,
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const char *input, int size, char *output, int output_size);
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char *_crypt_gensalt_sha512_rn(unsigned long count,
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const char *input, int size, char *output, int output_size);
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/* disable 'extended DES crypt' */
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/* #define DISABLE_XDES */
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/* crypt-blowfish.c */
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char *_crypt_blowfish_rn(const char *key, const char *setting,
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char *output, int size);
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/* crypt-des.c */
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char *px_crypt_des(const char *key, const char *setting);
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/* crypt-md5.c */
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char *px_crypt_md5(const char *pw, const char *salt,
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char *passwd, unsigned dstlen);
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/* crypt-sha.c */
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char *px_crypt_shacrypt(const char *pw, const char *salt, char *passwd, unsigned dstlen);
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#endif /* _PX_CRYPT_H */
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