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/* dh.h
*
* Copyright (C) 2006-2020 wolfSSL Inc.
*
* This file is part of wolfSSL.
*
* wolfSSL 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.
*
* wolfSSL 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335, USA
*/
/* dh.h for openSSL */
#ifndef WOLFSSL_DH_H_
#define WOLFSSL_DH_H_
#include <wolfssl/openssl/bn.h>
#ifdef __cplusplus
extern "C" {
#endif
#ifndef WOLFSSL_DH_TYPE_DEFINED /* guard on redeclaration */
typedef struct WOLFSSL_DH WOLFSSL_DH;
#define WOLFSSL_DH_TYPE_DEFINED
#endif
typedef WOLFSSL_DH DH;
struct WOLFSSL_DH {
WOLFSSL_BIGNUM* p;
WOLFSSL_BIGNUM* g;
WOLFSSL_BIGNUM* q;
WOLFSSL_BIGNUM* pub_key; /* openssh deference g^x */
WOLFSSL_BIGNUM* priv_key; /* openssh deference x */
void* internal; /* our DH */
char inSet; /* internal set from external ? */
char exSet; /* external set from internal ? */
/*added for lighttpd openssl compatibility, go back and add a getter in
* lighttpd src code.
*/
int length;
};
WOLFSSL_API WOLFSSL_DH *wolfSSL_d2i_DHparams(WOLFSSL_DH **dh,
const unsigned char **pp, long length);
WOLFSSL_API int wolfSSL_i2d_DHparams(const WOLFSSL_DH *dh, unsigned char **out);
WOLFSSL_API WOLFSSL_DH* wolfSSL_DH_new(void);
WOLFSSL_API void wolfSSL_DH_free(WOLFSSL_DH*);
WOLFSSL_API int wolfSSL_DH_check(const WOLFSSL_DH *dh, int *codes);
WOLFSSL_API int wolfSSL_DH_size(WOLFSSL_DH*);
WOLFSSL_API int wolfSSL_DH_generate_key(WOLFSSL_DH*);
WOLFSSL_API int wolfSSL_DH_compute_key(unsigned char* key, WOLFSSL_BIGNUM* pub,
WOLFSSL_DH*);
WOLFSSL_API int wolfSSL_DH_LoadDer(WOLFSSL_DH*, const unsigned char*, int sz);
WOLFSSL_API int wolfSSL_DH_set0_pqg(WOLFSSL_DH*, WOLFSSL_BIGNUM*,
WOLFSSL_BIGNUM*, WOLFSSL_BIGNUM*);
#define DH_new wolfSSL_DH_new
#define DH_free wolfSSL_DH_free
#define d2i_DHparams wolfSSL_d2i_DHparams
#define i2d_DHparams wolfSSL_i2d_DHparams
#define DH_check wolfSSL_DH_check
#define DH_size wolfSSL_DH_size
#define DH_generate_key wolfSSL_DH_generate_key
#define DH_compute_key wolfSSL_DH_compute_key
#if defined(OPENSSL_VERSION_NUMBER) && OPENSSL_VERSION_NUMBER >= 0x10100000L
#define DH_set0_pqg wolfSSL_DH_set0_pqg
#endif
#define DH_bits(x) (BN_num_bits(x->p))
#define DH_GENERATOR_2 2
#define DH_CHECK_P_NOT_PRIME 0x01
#define DH_CHECK_P_NOT_SAFE_PRIME 0x02
#define DH_NOT_SUITABLE_GENERATOR 0x08
/* Temporary values for wolfSSL_DH_Check*/
#define DH_CHECK_INVALID_Q_VALUE 0x10
#define DH_CHECK_Q_NOT_PRIME 0x11
/* end temp */
/* for pre 1.1.0 */
#define get_rfc2409_prime_768 wolfSSL_DH_768_prime
#define get_rfc2409_prime_1024 wolfSSL_DH_1024_prime
#define get_rfc3526_prime_1536 wolfSSL_DH_1536_prime
#define get_rfc3526_prime_2048 wolfSSL_DH_2048_prime
#define get_rfc3526_prime_3072 wolfSSL_DH_3072_prime
#define get_rfc3526_prime_4096 wolfSSL_DH_4096_prime
#define get_rfc3526_prime_6144 wolfSSL_DH_6144_prime
#define get_rfc3526_prime_8192 wolfSSL_DH_8192_prime
#ifdef __cplusplus
} /* extern "C" */
#endif
#if defined(OPENSSL_ALL) || defined(HAVE_STUNNEL)
#define DH_generate_parameters wolfSSL_DH_generate_parameters
#define DH_generate_parameters_ex wolfSSL_DH_generate_parameters_ex
#endif /* OPENSSL_ALL || HAVE_STUNNEL */
#endif /* WOLFSSL_DH_H_ */
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