[#CMS_unsigned_get_attr_count]
= CMS_unsigned_get_attr_count
:mrdocs:

Return how many unsigned attributes are present on a CMS SignerInfo.

== Synopsis

Declared in `<openssl/cms.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
int
CMS_unsigned_get_attr_count(xref:CMS_SignerInfo.adoc[CMS_SignerInfo] const* si);
----

== Return Value

Attribute count, or ‐1 if the unsigned attribute list is NULL.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *si*
| SignerInfo whose unsignedAttrs are counted.
|===


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