[#EVP_MAC_finalXOF]
= EVP_MAC_finalXOF
:mrdocs:

Finalize an XOF‐style MAC and write `outsize` bytes of output.

== Synopsis

Declared in `<openssl/evp.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
int
EVP_MAC_finalXOF(
    xref:EVP_MAC_CTX.adoc[EVP_MAC_CTX]* ctx,
    unsigned char* out,
    size_t outsize);
----

== Return Value

1 on success, or 0 on failure.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *ctx*
| MAC context that has absorbed input via EVP_MAC_update().
| *out*
| Buffer receiving the MAC output.
| *outsize*
| Number of output bytes requested.
|===


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