Imported OpenSSL 1.1.1a

doc/man3/DSA_dup_DH.pod

@@ -0,0 +1,41 @@
+=pod
+
+=head1 NAME
+
+DSA_dup_DH - create a DH structure out of DSA structure
+
+=head1 SYNOPSIS
+
+ #include <openssl/dsa.h>
+
+ DH *DSA_dup_DH(const DSA *r);
+
+=head1 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.
+
+=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 COPYRIGHT
+
+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
+L<https://www.openssl.org/source/license.html>.
+
+=cut