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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 | /* | |
11 | * DH low level APIs are deprecated for public use, but still ok for | |
12 | * internal use. | |
13 | */ | |
14 | #include "internal/deprecated.h" | |
15 | ||
16 | #include <stdio.h> | |
17 | #include "internal/cryptlib.h" | |
18 | #include "dh_local.h" | |
19 | #include <openssl/bn.h> | |
20 | #include "crypto/bn_dh.h" | |
21 | ||
22 | /* | |
23 | * Macro to make a DH structure from BIGNUM data. NB: although just copying | |
24 | * the BIGNUM static pointers would be more efficient, we can't do that | |
25 | * because they get wiped using BN_clear_free() when DH_free() is called. | |
26 | */ | |
27 | ||
28 | #define make_dh(x) \ | |
29 | DH *DH_get_##x(void) \ | |
30 | { \ | |
31 | DH *dh = DH_new(); \ | |
32 | \ | |
33 | if (dh == NULL) \ | |
34 | return NULL; \ | |
35 | dh->params.p = BN_dup(&_bignum_dh##x##_p); \ | |
36 | dh->params.g = BN_dup(&_bignum_dh##x##_g); \ | |
37 | dh->params.q = BN_dup(&_bignum_dh##x##_q); \ | |
38 | if (dh->params.p == NULL || dh->params.q == NULL || dh->params.g == NULL) {\ | |
39 | DH_free(dh); \ | |
40 | return NULL; \ | |
41 | } \ | |
42 | return dh; \ | |
43 | } | |
44 | ||
45 | make_dh(1024_160) | |
46 | make_dh(2048_224) | |
47 | make_dh(2048_256) |