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Event-based data signing via time-based one-time authentication passcodes

  • US 9,225,717 B1
  • Filed: 03/14/2013
  • Issued: 12/29/2015
  • Est. Priority Date: 03/14/2013
  • Status: Active Grant
First Claim
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1. A method for generating one or more user authentication passcodes, comprising:

  • generating a time-based user authentication passcode based on a first forward-secure pseudorandom number;

    generating an event-based user authentication passcode based on a second forward-secure pseudorandom number, wherein said first forward-secure pseudorandom number is generated using at least one hardware device using a first seed from a first level of a hierarchical forward-secure pseudorandom number tree stored in a memory and wherein said second forward-secure pseudorandom number is generated using said at least one hardware device using a second seed from a different, second level of said hierarchical forward-secure pseudorandom number tree;

    providing said generated time-based user authentication passcode for authentication of a user; and

    providing said generated event-based user authentication passcode for signing of one or more data transactions of said user during a session of said user.

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