| =pod |
| |
| =head1 NAME |
| |
| DSA_dup_DH - create a DH structure out of DSA structure |
| |
| =head1 SYNOPSIS |
| |
| #include <openssl/dsa.h> |
| |
| The following functions have been deprecated since OpenSSL 3.0, and can be |
| hidden entirely by defining B<OPENSSL_API_COMPAT> with a suitable version value, |
| see L<openssl_user_macros(7)>: |
| |
| DH *DSA_dup_DH(const DSA *r); |
| |
| =head1 DESCRIPTION |
| |
| The function described on this page is deprecated. There is no direct |
| replacement, applications should use the EVP_PKEY APIs for Diffie-Hellman |
| operations. |
| |
| 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. |
| |
| =head1 RETURN VALUES |
| |
| DSA_dup_DH() returns the new B<DH> structure, and NULL on error. The |
| error codes can be obtained by L<ERR_get_error(3)>. |
| |
| =head1 NOTE |
| |
| Be careful to avoid small subgroup attacks when using this. |
| |
| =head1 SEE ALSO |
| |
| L<DH_new(3)>, L<DSA_new(3)>, L<ERR_get_error(3)> |
| |
| =head1 HISTORY |
| |
| This function was deprecated in OpenSSL 3.0. |
| |
| =head1 COPYRIGHT |
| |
| Copyright 2000-2020 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 |
| L<https://www.openssl.org/source/license.html>. |
| |
| =cut |
