age_keytab - Remove old Kerberos keys from a keytab
age_keytab [keytab]
age_keytab scans the specified keytab, or the Kerberos default keytab if none is given, to find keys that should be deleted. Specifically, it considers principals for which multiple keys are present and any tickets issued prior to the most recent version are likely to have expired. Under those conditions, age_keytab deletes all keys whose kvno is lower than that found in a newly-issued ticket.
The determination as to whether tickets issued with an older key are likely to have expired is based on the lifetime of a newly-issued ticket. Thus, this heuristic may produce incorrect results if the principal's maximum lifetime has changed, or if the tickets with which age_keytab is run expire too soon.
rekeymgr(1), getnewkeys(8)
The rekey tools were written by Chaskiel Grundman.
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