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/*
*****************************************************************************
*
* File: cipher_funcs.h
*
* Author: Damien S. Stuart
*
* Purpose: Header for the fwknop cipher_funcs.c.
*
* Copyright 2009-2010 Damien Stuart (dstuart@dstuart.org)
*
* License (GNU Public License):
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
* USA
*
*****************************************************************************
*/
#ifndef CIPHER_FUNCS_H
#define CIPHER_FUNCS_H 1
#include "fko_common.h"
#include "rijndael.h"
#include "gpgme_funcs.h"
/* Define the consistent prefixes or salt on some ecryption schemes.
* We identify them here so we can remove and reinsert when needed.
*/
#define B64_RIJNDAEL_SALT "U2FsdGVkX1"
#define B64_GPG_PREFIX "hQ"
/* Provide the predicted encrypted data size for given input data based
* on a 16-byte block size (for Rijndael implementation,this also accounts
* for the 16-byte salt as well).
*/
#define PREDICT_ENCSIZE(x) (1+(x>>4)+(x&0xf?1:0))<<4
size_t rij_encrypt(unsigned char *in, size_t len, const char *key, unsigned char *out);
size_t rij_decrypt(unsigned char *in, size_t len, const char *key, unsigned char *out);
#endif /* CIPHER_FUNCS_H */
/***EOF***/
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