[#OBJ_obj2nid]
= OBJ_obj2nid
:mrdocs:

Return the NID for an ASN1_OBJECT.

== Synopsis

Declared in `<openssl/objects.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
int
OBJ_obj2nid(xref:ASN1_OBJECT.adoc[ASN1_OBJECT] const* o);
----

== Return Value

Corresponding NID, or NID_undef on error.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *o*
| Object identifier to look up.
|===


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