Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
January 28, 2014
Patent Application Number
10590415
Date Filed
February 23, 2005
Patent Citations Received
Patent Primary Examiner
Patent abstract
A method for calculating a One Time Password. A secret is concatenated with a count, where the secret is uniquely assigned to a token. The secret can be a private key or a shared secret symmetric key. The count is a number that increases monotonically at the token with the number of one-time Passwords generated at the token. The count is also tracked at an authentication server, where it increases monotonically with each calculation of a one-time Password at the authentication server. An OTP can be calculated by hashing a concatenated secret and count. The result can be truncated.
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