1 /* 2 * Copyright 2011-2016 The OpenSSL Project Authors. All Rights Reserved. 3 * 4 * Licensed under the OpenSSL license (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