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System and method for automatic digital certificate installation on a network device in a data-over-cable system

  • US 7,114,070 B1
  • Filed: 02/14/2002
  • Issued: 09/26/2006
  • Est. Priority Date: 01/26/2001
  • Status: Expired due to Fees
First Claim
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1. A method for automatic installation of a digital certificate on a cable modem in a data-over-cable system, the method comprising:

  • performing a digital certificate installation process on the cable modem during initialization to determine whether a digital certificate is installed on the cable modem, the determination being made by the cable modem;

    if not,generating a digital certificate filename on the cable modem;

    generating a digital certificate request including the digital certificate filename on the cable modem, the digital certificate request being initiated by the cable modem;

    sending the digital certificate request including the digital certificate filename from the cable modem to a predetermined network server;

    receiving a digital certificate file on the cable modem including at least one digital certificate, the digital certificate file having been sent from the network server; and

    storing the at least one digital certificate received from the network server on the cable modem;

    wherein the digital certificate is required to authenticate the cable modem on a Cable Modem Termination System (CMTS) to prevent unauthorized cable modems from accessing services of the CMTS.

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