include/beecrypt/dhies.h

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/*
 * Copyright (c) 2000, 2001, 2002, 2005 X-Way Rights BV
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 */

#ifndef _DHIES_H
#define _DHIES_H
 
#include "beecrypt/beecrypt.h"
#include "beecrypt/dldp.h"

#ifdef __cplusplus
struct BEECRYPTAPI dhies_pParameters
#else
struct _dhies_pParameters
#endif
{
    const dldp_p*               param;
    const hashFunction*         hash;
    const blockCipher*          cipher;
    const keyedHashFunction*    mac;
    size_t                      cipherkeybits;
    size_t                      mackeybits;
};

#ifndef __cplusplus
typedef struct _dhies_pParameters dhies_pParameters;
#endif

#ifdef __cplusplus
struct BEECRYPTAPI dhies_pContext
#else
struct _dhies_pContext
#endif
{
    dldp_p                      param;
    mpnumber                    pub;
    mpnumber                    pri;
    hashFunctionContext         hash;
    blockCipherContext          cipher;
    keyedHashFunctionContext    mac;
    size_t                      cipherkeybits;
    size_t                      mackeybits;
};

#ifndef __cplusplus
typedef struct _dhies_pContext dhies_pContext;
#endif

#ifdef __cplusplus
extern "C" {
#endif

BEECRYPTAPI
int dhies_pUsable(const dhies_pParameters*);

BEECRYPTAPI
int dhies_pContextInit       (dhies_pContext*, const dhies_pParameters*);
BEECRYPTAPI
int dhies_pContextInitDecrypt(dhies_pContext*, const dhies_pParameters*, const mpnumber*);
BEECRYPTAPI
int dhies_pContextInitEncrypt(dhies_pContext*, const dhies_pParameters*, const mpnumber*);
BEECRYPTAPI
int dhies_pContextFree       (dhies_pContext*);

BEECRYPTAPI
memchunk* dhies_pContextEncrypt(dhies_pContext*,       mpnumber*,       mpnumber*, const memchunk*, randomGeneratorContext*);
BEECRYPTAPI
memchunk* dhies_pContextDecrypt(dhies_pContext*, const mpnumber*, const mpnumber*, const memchunk*);

#ifdef __cplusplus
}
#endif

#endif

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