Patent ID: 7752450
Filing Date: 2010-07-06
Classification: G06F,G06Q,H04L

Abstract:
1. A method comprising: determining that a probability that a local user will send a network authentication request is above a threshold; obtaining, by an intermediate network device comprising a microprocessor, a sequence of one-time passwords generated for the local user from a remote one-time password server based on the determination; storing the sequence of one-time passwords in a local cache associated with the intermediate network device; accessing the local cache in response to the network authentication request received from a client device associated with the local user to select a current one-time password from the sequence of one-time passwords in the local cache; and determining, by the intermediate network device comprising the microprocessor, whether to grant the network authentication request by comparing a one-time password specified by the network authentication request to the current one-time password selected from the sequence of one-time passwords.