[#CMAC_CTX_copy]
= CMAC_CTX_copy
:mrdocs:

Copy CMAC state from `in` into `out` (deprecated).

== Synopsis

Declared in `<openssl/cmac.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
[[deprecated]]
int
CMAC_CTX_copy(
    xref:CMAC_CTX.adoc[CMAC_CTX]* out,
    xref:CMAC_CTX.adoc[CMAC_CTX] const* in);
----

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

1 on success, or 0 on failure.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *out*
| Destination CMAC context (already allocated).
| *in*
| Source CMAC context to duplicate.
|===


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