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/*
* Copyright (c) 2006 Kungliga Tekniska Högskolan
* (Royal Institute of Technology, Stockholm, Sweden).
* 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. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE 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 INSTITUTE 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.
*/
/*
* $Id: dh.h 17483 2006-05-06 13:11:15Z lha $
*/
#ifndef _HEIM_DH_H
#define _HEIM_DH_H 1
/* symbol renaming */
#define DH_null_method hc_DH_null_method
#define DH_imath_method hc_DH_imath_method
#define DH_new hc_DH_new
#define DH_new_method hc_DH_new_method
#define DH_free hc_DH_free
#define DH_up_ref hc_DH_up_ref
#define DH_size hc_DH_size
#define DH_set_default_method hc_DH_set_default_method
#define DH_get_default_method hc_DH_get_default_method
#define DH_set_method hc_DH_set_method
#define DH_get_method hc_DH_get_method
#define DH_set_ex_data hc_DH_set_ex_data
#define DH_get_ex_data hc_DH_get_ex_data
#define DH_generate_parameters_ex hc_DH_generate_parameters_ex
#define DH_check_pubkey hc_DH_check_pubkey
#define DH_generate_key hc_DH_generate_key
#define DH_compute_key hc_DH_compute_key
/*
*
*/
typedef struct DH DH;
typedef struct DH_METHOD DH_METHOD;
#include <hcrypto/bn.h>
#include <hcrypto/engine.h>
struct DH_METHOD {
const char *name;
int (*generate_key)(DH *);
int (*compute_key)(unsigned char *,const BIGNUM *,DH *);
int (*bn_mod_exp)(const DH *, BIGNUM *, const BIGNUM *,
const BIGNUM *, const BIGNUM *, BN_CTX *,
BN_MONT_CTX *);
int (*init)(DH *);
int (*finish)(DH *);
int flags;
void *app_data;
int (*generate_params)(DH *, int, int, BN_GENCB *);
};
struct DH {
int pad;
int version;
BIGNUM *p;
BIGNUM *g;
long length;
BIGNUM *pub_key;
BIGNUM *priv_key;
int flags;
void *method_mont_p;
BIGNUM *q;
BIGNUM *j;
void *seed;
int seedlen;
BIGNUM *counter;
int references;
struct CRYPTO_EX_DATA {
void *sk;
int dummy;
} ex_data;
const DH_METHOD *meth;
ENGINE *engine;
};
/* DH_check_pubkey return codes in `codes' argument. */
#define DH_CHECK_PUBKEY_TOO_SMALL 1
#define DH_CHECK_PUBKEY_TOO_LARGE 2
/*
*
*/
const DH_METHOD *DH_null_method(void);
const DH_METHOD *DH_imath_method(void);
DH * DH_new(void);
DH * DH_new_method(ENGINE *);
void DH_free(DH *);
int DH_up_ref(DH *);
int DH_size(const DH *);
void DH_set_default_method(const DH_METHOD *);
const DH_METHOD *
DH_get_default_method(void);
int DH_set_method(DH *, const DH_METHOD *);
int DH_set_ex_data(DH *, int, void *);
void * DH_get_ex_data(DH *, int);
int DH_generate_parameters_ex(DH *, int, int, BN_GENCB *);
int DH_check_pubkey(const DH *, const BIGNUM *, int *);
int DH_generate_key(DH *);
int DH_compute_key(unsigned char *,const BIGNUM *,DH *);
#endif /* _HEIM_DH_H */
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