Method, system and program product for attaching a title key...

Details Method, system and program product for attaching a title key... Method, system and program product for attaching a title key...

2008-04-08

2008-04-08

Vu, Kim (Department: 2135)

Cryptography

Key management

Key distribution

C380S267000, C380S277000, C380S278000, C713S160000

Reexamination Certificate

active

07356147

ABSTRACT:
A method and system for attaching a title key to encrypted content for synchronized transmission to, or storage by, a recipient is provided. Specifically, under the present invention, an elementary media stream is parceled into content units that each include a content packet and a header. The content packets are encrypted with one or more title keys. Once the content packets have been encrypted, the title keys are themselves encrypted with a key encrypting key. The encrypted title keys are then attached to the corresponding encrypted content packets for synchronized transmission to a recipient.

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IBM Technical Disclosure Bulletin, vol. 33, No. 3A, Dated: Aug. 1990, “In-Band Delivery Of Scrambling Keys In Fixed Format Data”.

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