Secure delivery of encrypted digital content

Details Secure delivery of encrypted digital content Secure delivery of encrypted digital content

2001-12-28

2008-07-15

Barron, Jr., Gilberto (Department: 2132)

Cryptography

Video cryptography

Video electric signal modification

C713S190000, C380S201000

Reexamination Certificate

active

07400729

ABSTRACT:
A content decoder is split into a decoder core and remaining portions. The decoder core implements decryption of encrypted content according to a selected encryption scheme, and the remaining portions provide an interface between the decoder core and content presentation systems/devices. Isolating the selected encryption scheme within the decoder core allows the content decoder to be produced and delivered to end users before the encryption scheme has been selected or developed. A logical separation of the content decoder from the decryption core allows the decryption core software to be updated and/or changed as needed.

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