[#OBJ_length]
= OBJ_length
:mrdocs:

Return the length in bytes of an ASN.1 object's encoded OID content.

== Synopsis

Declared in `<openssl/objects.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
size_t
OBJ_length(xref:ASN1_OBJECT.adoc[ASN1_OBJECT] const* obj);
----

== Return Value

Number of content octets in the OID, or 0 if `obj` is NULL or has no data.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *obj*
| Object identifier to query; NULL yields 0.
|===


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