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<page xmlns="http://projectmallard.org/1.0/" xmlns:its="http://www.w3.org/2005/11/its" type="topic" style="task" id="pgp-expired"> <info> <link type="guide" xref="index#pgp-keys"/> <revision version="0.1" date="2011-10-23" status="stub"/> <revision pkgversion="3.9" version="0.1" date="2013-07-03" status="review"/> <include href="legal.xml" xmlns="http://www.w3.org/2001/XInclude"/> <credit type="author copyright"> <name>Aruna Sankaranarayanan</name> <email its:translate="no">aruna.evam@gmail.com</email> <years>2013</years> </credit> <desc>Can I still use it? Can expiration dates be changed?</desc> </info> <title>What happens if my key expires?</title> <p>When your key expires, it becomes invalid. This means:</p> <list> <item> <p>It can no longer be used to encrypt and decrypt messages.</p> </item> <item> <p>It cannot sign other keys or receive signatures from other keys.</p> </item> </list> <p>Depending on how long you want your key to be valid, you can <link xref="pgp-create#advanced">set an expiration date</link> for it. By default, <app>Passwords and Keys</app> sets all keys to be valid forever. That is, the keys never expire.</p> <p>The expiration date on a key can be <link xref="pgp-expiration-change">changed</link> anytime, even after the key has expired. However, if you want to stop using the expired key, you should <link xref="pgp-delete">delete</link> or <link xref="subkeys-revoke">revoke</link> it.</p> <note style="info"> <p>If you have any messages encrypted with an expired key, you must change the expiration date on the key to decrypt such messages before deleting or revoking it.</p> </note> </page>