[opensuse-buildservice] Check signkey is (still) valid

How can I check if a projects signkey is still valid or needs extension. Is there an osc or gpg command I can use to find that out to write a Nagios check to warn me, before the key expires and users complain. Kind regards Ralf -- Ralf Becker EGroupware GmbH [www.egroupware.org] Handelsregister HRB Kaiserslautern 3587 Geschäftsführer Birgit und Ralf Becker Leibnizstr. 17, 67663 Kaiserslautern, Germany Telefon +49 631 31657-0