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) \ |
23 | DH *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 | |
39 | make_dh(1024_160) |
40 | make_dh(2048_224) |
41 | make_dh(2048_256) |
42 | |