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Token recycling

  • US 8,832,453 B2
  • Filed: 02/28/2007
  • Issued: 09/09/2014
  • Est. Priority Date: 02/28/2007
  • Status: Active Grant
First Claim
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1. A method comprising:

  • establishing a first secure connection between a locked token and a security server system through a client device coupled to the locked token;

    activating a process to unlock the locked token via the first secure connection;

    establishing a second secure connection between the client device and the security server system in response to activating the process to unlock the locked token, wherein the second secure connection differs from the first secure connection;

    prompting a user for an authentication credential via the second secure connection;

    determining that the user has correctly provided the authentication credential; and

    unlocking, by a processor, the locked token in response to determining that the user has correctly provided the authentication credential, the unlocking comprising mutually authenticating the locked token and the security server system using symmetric keys derived from a master key, wherein the symmetric keys are stored in the locked token and the security server system.

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