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/*
* pppcrypt.c - PPP/DES linkage for MS-CHAP and EAP SRP-SHA1
*
* Extracted from chap_ms.c by James Carlson.
* Updated to better reflect RFC2759 by Eivind Naess
*
* Copyright (c) 2022 Eivind Naess. All rights reserved.
* Copyright (c) 1995 Eric Rosenquist. 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 name(s) of the authors of this software must not be used to
* endorse or promote products derived from this software without
* prior written permission.
*
* THE AUTHORS OF THIS SOFTWARE DISCLAIM ALL WARRANTIES WITH REGARD TO
* THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
* AND FITNESS, IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY
* SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
* AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#ifndef PPP_PPPCRYPT_H
#define PPP_PPPCRYPT_H
#include "pppdconf.h"
#ifdef __cplusplus
extern "C" {
#endif
/**
* This is the DES encrypt functions as described by RFC2759.
*
* Parameters:
* const unsigned char *clear:
* A 8 byte input array to be encrypted
*
* const unsigned char *key:
* A raw 7-byte array to be expanded to 8 with odd-parity
*
* unsigned char *cipher:
* A 8 byte outut array providing space for the output data
*
* DesEncrypt returns 1 on success
*/
int DesEncrypt(const unsigned char *clear, const unsigned char *key,
unsigned char *cipher);
/**
* This is the DES decrypt functions as described by RFC2759.
*
* Parameters:
* const unsigned char *cipher:
* A 8 byte input array to be decrypted
*
* const unsigned char *key:
* A raw 7-byte array to be expanded to a 8-byte key with odd-parity
*
* unsigned char *clear:
* A 8 byte output array providing space for the output data
*
* DesDecrypt returns 1 on success
*/
int DesDecrypt(const unsigned char *cipher, const unsigned char *key,
unsigned char *clear);
#ifdef __cplusplus
}
#endif
#endif /* PPP_PPPCRYPT_H */
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