06611812 is referenced by 308 patents and cites 9 patents.

A method to delivery encrypted digital content to a end user system for playing the content comprising the steps of: reading from a computer readable medium metadata which has previously associated with the content. A user selects from the metadata associated content to decrypt and the end user system establishes a secure connection with an authorization authority for decrypting the content. The end user system receives a secure container containing the decrypting key for decrypting at least part of the previously encrypted content as permitted. The system creates a secure container using the encrypting key from a clearing house, wherein the secure container has an encrypting key therein from the end user system; transferring the secure container to the clearing house for authentication of permission to decrypt the content. The system receives from the clearing house, a secure container encrypted using the encrypting key of the end user system containing the decrypting key for decrypting at least part of the previously encrypted content stored on the computer readable medium as permitted; and playing at least part of the previously encrypted content by decrypting the secure container using the encrypting key of the end user system to access the decrypting key for decrypting at least part of the encrypted content.

Title
Secure electronic content distribution on CDS and DVDs
Application Number
9/376102
Publication Number
6611812 (B2)
Application Date
August 17, 1999
Publication Date
August 26, 2003
Inventor
Jeffrey B Lotspiech
San Jose
CA, US
Richard L Spagna
Boca Raton
FL, US
Christopher T Lehman
Delray Beach
FL, US
Edgar Downs
Ft. Lauderdale
FL, US
George G Gruse
Lighthouse Point
FL, US
Kenneth L Milsted
Boynton Beach
FL, US
Marco M Hurtado
Boca Raton
FL, US
Agent
Fleit Kain Gibbons Gutman & Bongini P L
US
Agent
David M Shofi
US
Jon A Gibbons
US
Assignee
International Business Machines Corporation
NY, US
IPC
G06F 17/60
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