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Server authentication in non-secure channel card pin reset methods and computer implemented processes

  • US 7,617,390 B2
  • Filed: 06/25/2004
  • Issued: 11/10/2009
  • Est. Priority Date: 06/25/2004
  • Status: Active Grant
First Claim
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1. A method for resetting a pin on an access card, comprising:

  • (a) generating a server authentication (SA) public key and an SA private key;

    (b) attempting a write of the SA public key to the access card over a non-secure channel;

    (c) determining if the access card currently contains an existing SA public key; and

    selecting the attempted write of the SA public key from one of;

    (i) completing the attempted write of the SA public key to the access card over the non-secure channel if it is determined that the access card did not contain an existing public key;

    (ii) denying the attempted write of the SA public key to the access card over the non-secure channel if it is determined that the existing SA public key matches the SA public key that is attempted by the write; and

    (iii) denying the attempted write of the SA public key to the access card over the non-secure channel if it is determined that the existing SA public key was written over a non-secure channel and does not match the SA public key that is attempted by the write;

    (d) attempting a reset of the pin on the access card from a server.

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