[#PKCS8_get_attr]
= PKCS8_get_attr
:mrdocs:

Retrieve a PKCS#8 private‐key attribute by NID.

== Synopsis

Declared in `<openssl/pkcs12.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
xref:ASN1_TYPE.adoc[ASN1_TYPE]*
PKCS8_get_attr(
    xref:PKCS8_PRIV_KEY_INFO.adoc[PKCS8_PRIV_KEY_INFO]* p8,
    int attr_nid);
----

== Return Value

Attribute value, or NULL if absent or on error.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *p8*
| PKCS#8 private key info structure.
| *attr_nid*
| NID of the attribute to retrieve.
|===


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