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Reducing certificate revocation lists at access points in a wireless access network

  • US 7,430,606 B1
  • Filed: 10/17/2003
  • Issued: 09/30/2008
  • Est. Priority Date: 10/17/2003
  • Status: Expired due to Fees
First Claim
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1. A method comprising:

  • receiving a subscription request at an Internet Service Provider (ISP) from a user terminal through an access point of an access network;

    assigning a subscription identifier to the user terminal at the ISP in response to the subscription request;

    generating at the ISP a service certificate signed by a certificate authority and that includes the subscription identifier to identify a subscription of the user terminal with the ISP;

    adding the service certificate to a certificate revocation list (CRL) maintained by the ISP;

    receiving the service certificate from the user terminal at the ISP;

    checking the service certificate against the certificate revocation list (CRL) maintained by the ISP; and

    providing from the ISP, to the user terminal, if the service certificate is valid, a session certificate to be used to access the access network through the access point, the session certificate having a shorter validity period than the service certificate.

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