Unique block header patterns for media verification

Details Unique block header patterns for media verification Unique block header patterns for media verification

2005-07-15

2011-11-01

Truong, Thanhnga (Department: 2438)

Electrical computers and digital processing systems: support

Multiple computer communication using cryptography

Particular communication authentication technique

C380S277000, C380S278000, C380S028000, C380S030000

Reexamination Certificate

active

08051291

ABSTRACT:
Authenticating the source of digital media is performed by using unique, randomly generated variably encoded frequency patterns to create mastering specific, profiles for sets end user media which can be verified by a manufacturer. A method for verifying the authenticity of an optical storage device includes the steps of: reading a randomly generated signature key value for the optical storage device; determining manufacturing information for the optical storage device; and matching read randomly generated signature key values and manufacturing information with known valid key the to determine the authenticity of the device.

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patent: 2005/0005137 (2005-01-01), Benedikt
patent: WO 03/054878 (2003-07-01), None

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