Offline methods for authentication in a client/server authentication system

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United States of America Patent

PATENT NO 9281945
SERIAL NO

11163010

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Abstract

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A method for providing authentication of a user of a recipient unit when the recipient unit is off-line includes storing one or a plurality of challenge-reply sets associated with an article based on an on-line communication with a sender unit. Each of the challenge-reply sets includes at least a challenge-reply pair for use in off-line authentication of the user for a particular resource available through the recipient unit. When the user is offline, the method includes selecting at least one of the plurality of stored challenge-reply sets for off-line authentication of the user for the particular resource available through the recipient unit.

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Patent Owner(s)

Patent OwnerAddress
ENTRUST CORPORATION1187 PARK PLACE SHAKOPEE MN 55379-3817

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
McCulligh, Murray Ottawa, CA 6 127
Smith, Marc Ottawa, CA 9 189
Voice, Chris Ottawa, CA 7 598
Zuccherato, Robert Ajax, CA 5 119

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