[#PKEY_USAGE_PERIOD_st]
= PKEY&lowbar;USAGE&lowbar;PERIOD&lowbar;st
:mrdocs:

Private key usage period extension giving the interval when the key is valid&period;

== Synopsis

Declared in `&lt;openssl&sol;x509v3&period;h&gt;`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
struct PKEY&lowbar;USAGE&lowbar;PERIOD&lowbar;st;
----

== Data Members

[cols="1,4"]
|===
| Name| Description
| xref:PKEY_USAGE_PERIOD_st/notAfter.adoc[`notAfter`] 
| End of the private key usage interval, or NULL if unset&period;
| xref:PKEY_USAGE_PERIOD_st/notBefore.adoc[`notBefore`] 
| Start of the private key usage interval, or NULL if unset&period;
|===



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