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Method for modifying validity of a certificate using biometric information in public key infrastructure-based authentication system

  • US 7,366,904 B2
  • Filed: 02/26/2002
  • Issued: 04/29/2008
  • Est. Priority Date: 10/18/2001
  • Status: Expired due to Fees
First Claim
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1. A method for modifying validity of a certificate using biometric information in a public key infrastructure-based authentication system including a registration authority for verifying identity of at least one user by proxy, a certificate authority for issuing the identity-verified user with the certificate and a user system, the method comprising the steps of:

  • a) accessing a server of the certificate authority using login information of the user in response to a certificate validity modification request from the user under the condition that he/she is registered as a member in the authentication system;

    b) inputting the biometric information for a user authentication through a biometric information input unit in the user system;

    c) generating a certificate validity modification request message in response to the certificate validity modification request from the user, wherein generating a certificate validity modification request message includes one of;

    generating a certificate revocation request message revoking the certificate issued to the user;

    generating a certificate suspension request message suspending the certificate issued to the user; and

    generating a certificate recovery request message recovering suspended authority of the certificate of the user; and

    d) sending the inputted biometric information and the generated certificate validity modification request message to the certificate authority to request the certificate validity modification online.

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