[#DHparams_dup]
= DHparams_dup
:mrdocs:

Duplicate Diffie‐Hellman domain parameters (DHparams_dup) (deprecated).

== Synopsis

Declared in `<openssl/dh.h>`

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

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

Newly allocated DH with duplicated parameters, or NULL on failure.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *a*
| Source DH object whose p, q, and g are copied.
|===


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