Methods and apparatus for protecting digital content
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United States of America Patent
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Aug 26, 2014
Grant Date -
Apr 26, 2012
app pub date -
Dec 28, 2011
filing date -
May 27, 2008
priority date (Note) -
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status (Latency Note)
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Abstract
A processing system to serve as a source device for protected digital content comprises a processor and control logic. When used by the processor, the control logic causes the processing system to receive a digital certificate from a presentation device. The processing system then uses public key infrastructure (PKI) to determine whether the presentation device has been authorized by a certificate authority (CA) to receive protected content. The processing system may also generate a session key and use the session key to encrypt data. The processing system may transmit the encrypted data to the presentation device only if the presentation device has been authorized by the CA to receive protected content. Presentation devices and repeaters may perform corresponding operations, thereby allowing content to be transmitted and presented in a protected manner. Other embodiments are described and claimed.
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