[#PEM_read_PKCS8]
= PEM_read_PKCS8
:mrdocs:

Read a PKCS#8 encrypted private‐key envelope (X509_SIG) from a PEM‐encoded FILE.

== Synopsis

Declared in `<openssl/pem.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
xref:X509_SIG.adoc[X509_SIG]*
PEM_read_PKCS8(
    FILE* fp,
    xref:X509_SIG.adoc[X509_SIG]** x,
    xref:pem_password_cb.adoc[pem_password_cb]* cb,
    void* u);
----

== Return Value

Encrypted PKCS#8 structure on success, or NULL on failure.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *fp*
| FILE to read from.
| *x*
| Optional address of an X509_SIG pointer to reuse, or NULL.
| *cb*
| Password callback for encrypted PEM, or NULL.
| *u*
| Application data passed to `cb.`
|===


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