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METHODS AND SYSTEMS FOR VERIFYING A LOCATION FACTOR ASSOCIATED WITH A TOKEN

  • US 20080069338A1
  • Filed: 08/31/2006
  • Published: 03/20/2008
  • Est. Priority Date: 08/31/2006
  • Status: Active Grant
First Claim
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1. A method for facilitating verification of a location factor associated with a token, the token receiving an encrypted challenge from a server, the encrypted challenge encrypted by a key commonly shared by the server and the token, the token decrypting the encrypted challenge by the commonly shared key, the method comprising:

  • manipulating the challenge by a predetermined elliptic curve cryptography (ECC) procedure to obtain a manipulated challenge; and

    returning the manipulated challenge to the server as a reply to the challenge for verification at the server.

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