5 DSA_dup_DH - create a DH structure out of DSA structure
9 #include <openssl/dsa.h>
11 Deprecated since OpenSSL 3.0, can be hidden entirely by defining
12 B<OPENSSL_API_COMPAT> with a suitable version value, see
13 L<openssl_user_macros(7)>:
15 DH *DSA_dup_DH(const DSA *r);
19 The function described on this page is deprecated. There is no direct
20 replacement, applications should use the EVP_PKEY APIs for Diffie-Hellman
23 DSA_dup_DH() duplicates DSA parameters/keys as DH parameters/keys. q
24 is lost during that conversion, but the resulting DH parameters
29 DSA_dup_DH() returns the new B<DH> structure, and NULL on error. The
30 error codes can be obtained by L<ERR_get_error(3)>.
34 Be careful to avoid small subgroup attacks when using this.
38 L<DH_new(3)>, L<DSA_new(3)>, L<ERR_get_error(3)>
42 This function was deprecated in OpenSSL 3.0.
46 Copyright 2000-2020 The OpenSSL Project Authors. All Rights Reserved.
48 Licensed under the Apache License 2.0 (the "License"). You may not use
49 this file except in compliance with the License. You can obtain a copy
50 in the file LICENSE in the source distribution or at
51 L<https://www.openssl.org/source/license.html>.