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Patent Searching and Data


Title:
【発明の名称】送信された情報をコピー保護するシステム及び方法
Document Type and Number:
Japanese Patent JP2003504974
Kind Code:
A
Abstract:
To afford copy protection for information, e.g. elementary streams, from a service provider while in transit between a point of deployment (POD) module and a set-top box, the information is accompanied by control information pairs. The pairs are respectively associated with the portions of the copy protected information and are incorporated into a shared key calculation in the POD module and set-top box. The shared keys are used by the POD module and set-top box to encrypt and decrypt the information. Tampering with a control information pair, as by an intruder or hacker, prevents keys shared by the set-top box and POD module from matching. A mismatch prevents the set-top box from correctly decrypting information received from the deployment module.

Inventors:
Ru, Jin
Freeman, martin
Application Number:
JP2001510238A
Publication Date:
February 04, 2003
Filing Date:
July 04, 2000
Export Citation:
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Assignee:
Konin Krekka Philips Electronics NV
International Classes:
G06F12/14; H04L9/08; H04L9/14; H04N5/91; H04N5/913; H04N5/92; H04N7/16; (IPC1-7): H04L9/14; G06F12/14; H04L9/08; H04N5/91; H04N5/92; H04N7/167
Foreign References:
EP0763936A21997-03-19
Attorney, Agent or Firm:
Tadahiko Ito