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/*
* FreeSec: libcrypt for NetBSD
*
* Copyright (c) 1994 David Burren
* All rights reserved.
*
* Adapted for FreeBSD-2.0 by Geoffrey M. Rehmet
* this file should now *only* export crypt(), in order to make
* binaries of libcrypt exportable from the USA
*
* Adapted for FreeBSD-4.0 by Mark R V Murray
* this file should now *only* export crypt_des(), in order to make
* a module that can be optionally included in libcrypt.
*
* Adapted for libxcrypt by Zack Weinberg, 2017
* see notes in des.c
*
* 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. Neither the name of the author nor the names of other contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* 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.
*
* This is an original implementation of the DES and the crypt(3) interfaces
* by David Burren <davidb@werj.com.au>.
*/
#ifndef _CRYPT_ALG_DES_H
#define _CRYPT_ALG_DES_H 1
/* des.c */
struct des_ctx
{
uint32_t keysl[16];
uint32_t keysr[16];
uint32_t saltbits;
};
extern void des_set_key (struct des_ctx *restrict ctx,
const unsigned char key[MIN_SIZE(8)]);
extern void des_set_salt (struct des_ctx *restrict ctx,
uint32_t salt);
extern void des_crypt_block (struct des_ctx *restrict ctx,
unsigned char *out, const unsigned char *in,
unsigned int count, bool decrypt);
/* des-tables.c (generated by des-mktables) */
extern const uint8_t m_sbox[4][4096];
extern const uint32_t ip_maskl[8][256], ip_maskr[8][256];
extern const uint32_t fp_maskl[8][256], fp_maskr[8][256];
extern const uint32_t key_perm_maskl[8][128], key_perm_maskr[8][128];
extern const uint32_t comp_maskl[8][128], comp_maskr[8][128];
extern const uint32_t psbox[4][256];
#endif /* alg-des.h */
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