approve(To manually or automatically authorize the occurrence of future events in a system); authorize(To sanction the future occurrence of an event in a system)
approver(A user who has permission to approve or reject submitted documents or data); authenticator(A data structure used by one party to prove that another party knows a secret key. In the Kerberos authentication protocol, authenticators include timestamps, to prevent replay attacks, and are encrypted with the session key issued by the Key Distribution Center (KDC))
