[#DSA_dup_DH]
= DSA_dup_DH
:mrdocs:

Duplicate DSA parameters (and key material when present) into a new DH object (deprecated).

== Synopsis

Declared in `<openssl/dsa.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
[[deprecated]]
xref:DH.adoc[DH]*
DSA_dup_DH(xref:DSA.adoc[DSA] const* r);
----

[WARNING]
====
https://en.cppreference.com/cpp/language/attributes/deprecated[Deprecated^]. Use of this entity is allowed but discouraged.
====
== Description

Be careful to avoid small‐subgroup attacks when using the resulting DH key.

== Return Value

New DH object, or NULL on error; free with DH_free().

== Parameters

[cols="1,4"]
|===
| Name| Description
| *r*
| Source DSA object whose p/q/g (and optional keys) are copied.
|===


[.small]#Created with https://www.mrdocs.com[MrDocs]#