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Methods and systems for replacing shared secrets over networks

  • US 8,990,906 B2
  • Filed: 07/20/2011
  • Issued: 03/24/2015
  • Est. Priority Date: 07/20/2011
  • Status: Active Grant
First Claim
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1. A method for replacing a shared secret over a network comprising:

  • receiving, by a communications device from an authorized user, a personal identification number and a request to generate a one-time password;

    storing the time and date of the request in the communications device;

    hashing the personal identification number;

    combining, by the communications device, the hashed personal identification number with a shared secret to generate a modified shared secret, the shared secret being stored in the communications device and in an authentication system;

    generating, by the communications device, a one-time password based on the request time and the modified shared secret;

    determining, by the communications device, that a security breach occurred when the request time precedes a previous request time stored in the communications device;

    determining, by the communications device, that due to the breach the shared secret for the authorized user is to be replaced;

    generating a new shared secret and an associated effective life for the authorized user; and

    replacing the shared secret and an associated effective life with the new shared secret and associated effective life in the communications device and in the authentication system.

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