[#PKEY_USAGE_PERIOD]
= PKEY&lowbar;USAGE&lowbar;PERIOD
: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"]
----
typedef xref:PKEY_USAGE_PERIOD_st.adoc[PKEY&lowbar;USAGE&lowbar;PERIOD&lowbar;st] PKEY&lowbar;USAGE&lowbar;PERIOD;
----


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