Please download the dossier by clicking on the dossier button x
×

Methods and apparatus for protecting digital content

  • US 20090296938A1
  • Filed: 05/27/2008
  • Published: 12/03/2009
  • Est. Priority Date: 05/27/2008
  • Status: Active Grant
First Claim
Patent Images

1. A method for protecting digital content, the method comprising:

  • receiving, at a source device, a digital certificate from a presentation device;

    using public key infrastructure (PKI) to determine, at the source device, whether the presentation device has been authorized by a certificate authority (CA) to receive protected content;

    generating a session key at the source device;

    using the session key to encrypt data; and

    transmitting the encrypted data to the presentation device only if the source device determines that the presentation device has been authorized by the CA to receive protected content.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×