DSA_dup_DH - create a DH structure out of DSA structure

#include <openssl/dsa.h>

DH *DSA_dup_DH(const DSA *r);

DSA_dup_DH() duplicates DSA parameters/keys as DH parameters/keys. q is lost during that conversion, but the resulting DH parameters contain its length.

DSA_dup_DH() returns the new DH structure, and NULL on error. The error codes can be obtained by ERR_get_error(3).

Be careful to avoid small subgroup attacks when using this.

DH_new(3), DSA_new(3), ERR_get_error(3)

Copyright 2000-2018 The OpenSSL Project Authors. All Rights Reserved.

Licensed under the OpenSSL license (the "License"). You may not use this file except in compliance with the License. You can obtain a copy in the file LICENSE in the source distribution or at https://www.openssl.org/source/license.html.

2021-03-25 1.1.1k