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Distributed single sign on technologies including privacy protection and proactive updating

  • US 9,160,528 B2
  • Filed: 02/29/2012
  • Issued: 10/13/2015
  • Est. Priority Date: 11/24/2008
  • Status: Active Grant
First Claim
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1. A method performed on an authentication device that includes at least one processor and memory, the method comprising:

  • computing, by the authentication device for each of a plurality of authentication devices that includes the authentication device, a corresponding update value;

    providing each update value to its corresponding one of the plurality of authentication devices;

    receiving, by the authentication device, another update value from each of the other authentication devices;

    updating, by the authentication device, a share of a secret based on the update value of the authentication device and on the received update values, where the updating the share does not require changing the secret.

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