A local copy of OpenSSL from GitHub
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/*
* Copyright 2011-2016 The OpenSSL Project Authors. All Rights Reserved.
*
* Licensed under the OpenSSL license (the "License"). You may not use
* this file except in compliance with the License. You can obtain a copy
* in the file LICENSE in the source distribution or at
* https://www.openssl.org/source/license.html
*/
#include <stdio.h>
#include "internal/cryptlib.h"
#include "dh_locl.h"
#include <openssl/bn.h>
#include "internal/bn_dh.h"
/*
* Macro to make a DH structure from BIGNUM data. NB: although just copying
* the BIGNUM static pointers would be more efficient, we can't do that
* because they get wiped using BN_clear_free() when DH_free() is called.
*/
#define make_dh(x) \
DH *DH_get_##x(void) \
{ \
DH *dh = DH_new(); \
\
if (dh == NULL) \
return NULL; \
dh->p = BN_dup(&_bignum_dh##x##_p); \
dh->g = BN_dup(&_bignum_dh##x##_g); \
dh->q = BN_dup(&_bignum_dh##x##_q); \
if (dh->p == NULL || dh->q == NULL || dh->g == NULL) {\
DH_free(dh); \
return NULL; \
} \
return dh; \
}
make_dh(1024_160)
make_dh(2048_224)
make_dh(2048_256)