[#EVP_PKEY_get_attr_count]
= EVP_PKEY_get_attr_count
:mrdocs:

Return how many X509_ATTRIBUTE entries are attached to a key.

== Synopsis

Declared in `<openssl/x509.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
int
EVP_PKEY_get_attr_count(xref:EVP_PKEY.adoc[EVP_PKEY] const* key);
----

== Return Value

Attribute count, or 0 if none.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *key*
| Key to query.
|===


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