[#EVP_MAC_is_a]
= EVP_MAC_is_a
:mrdocs:

Test whether a MAC implementation matches an algorithm name.

== Synopsis

Declared in `<openssl/evp.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
int
EVP_MAC_is_a(
    xref:EVP_MAC.adoc[EVP_MAC] const* mac,
    char const* name);
----

== Return Value

1 if `mac` is known as `name,` or 0 otherwise.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *mac*
| MAC method to query.
| *name*
| Algorithm name (for example "HMAC" or "CMAC").
|===


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