[#PKCS8_pkey_add1_attr]
= PKCS8_pkey_add1_attr
:mrdocs:

Append a copy of an attribute to a PKCS#8 PrivateKeyInfo.

== Synopsis

Declared in `<openssl/x509.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
int
PKCS8_pkey_add1_attr(
    xref:PKCS8_PRIV_KEY_INFO.adoc[PKCS8_PRIV_KEY_INFO]* p8,
    xref:X509_ATTRIBUTE.adoc[X509_ATTRIBUTE]* attr);
----

== Return Value

1 on success, or 0 on failure.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *p8*
| PrivateKeyInfo to update.
| *attr*
| Attribute to duplicate and append.
|===


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