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Method and apparatus for mutually authenticating a user device of a primary service provider

  • US 9,692,602 B2
  • Filed: 12/18/2007
  • Issued: 06/27/2017
  • Est. Priority Date: 12/18/2007
  • Status: Active Grant
First Claim
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1. A method comprising:

  • authenticating a user device with an authentication server of a primary service provider and forming a root certificate at the primary service provider;

    communicating the root certificate to the user device from the primary service provider;

    authenticating a supplemental service provider by signing a supplemental service provider certificate at an intermediate authentication authority to form a signed supplemental service provider certificate then signing the signed supplemental service provider certificate with the authentication server of the primary service provider and forming a twice-signed supplemental service provider certificate, said supplemental service provider separate from the primary service provider;

    communicating the twice-signed supplemental service provider certificate to the supplemental service provider;

    mutually authenticating the user device and the supplemental service provider with each other using the root certificate and the twice-signed supplemental service provider certificate; and

    after mutually authenticating, communicating directly between the supplemental service provider and the user device.

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