OpenSSL

Cryptography and SSL/TLS Toolkit

DSA_dup_DH

NAME

DSA_dup_DH - create a DH structure out of DSA structure

SYNOPSIS

 #include <openssl/dsa.h>

 DH *DSA_dup_DH(const DSA *r);

DESCRIPTION

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.

RETURN VALUES

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

NOTE

Be careful to avoid small subgroup attacks when using this.

SEE ALSO

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

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

Licensed under the Apache License 2.0 (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.