1/*
2 * Copyright 2011-2016 The OpenSSL Project Authors. All Rights Reserved.
3 *
4 * Licensed under the Apache License 2.0 (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
8 */
9
10#include <stdio.h>
11#include "internal/cryptlib.h"
12#include "dh_local.h"
13#include <openssl/bn.h>
14#include "crypto/bn_dh.h"
15
16/*
17 * Macro to make a DH structure from BIGNUM data. NB: although just copying
18 * the BIGNUM static pointers would be more efficient, we can't do that
19 * because they get wiped using BN_clear_free() when DH_free() is called.
20 */
21
22#define make_dh(x) \
23DH *DH_get_##x(void) \
24{ \
25 DH *dh = DH_new(); \
26\
27 if (dh == NULL) \
28 return NULL; \
29 dh->p = BN_dup(&_bignum_dh##x##_p); \
30 dh->g = BN_dup(&_bignum_dh##x##_g); \
31 dh->q = BN_dup(&_bignum_dh##x##_q); \
32 if (dh->p == NULL || dh->q == NULL || dh->g == NULL) {\
33 DH_free(dh); \
34 return NULL; \
35 } \
36 return dh; \
37}
38
39make_dh(1024_160)
40make_dh(2048_224)
41make_dh(2048_256)
42