US 7,664,263 B2
Method for combining transfer functions with predetermined key creationGeneral
US 7,664,263 B2
Method for combining transfer functions with predetermined key creation
Tech Center:
2400 Networking, Multiplexing, Cable, and Security
Examiner:
Jung Kim
Art Unit:
2432 Cryptography and Security
Agent:
WISTARIA TRADING LTD
Inventors:
Scott A. Moskowitz
Assignee:
Priority:
03/24/98
Filed:
06/25/03
Granted:
02/16/10
Expiration:
05/28/23
Abstract
A method for combining transfer functions with predetermined key creation. In one embodiment, digital information, including a digital sample and format information, is protected by identifying and encoding a portion of the format information. Encoded digital information, including the digital sample and the encoded format information, is generated to protect the original digital information. In another embodiment, a digital signal, including digital samples in a file format having an inherent granularity, is protected by creating a predetermined key. The predetermined key is comprised of a transfer function-based mask set to manipulate data at the inherent granularity of the file format of the underlying digitized samples.
Cooperative Patent Classification (CPC)
H04H04L2209/608H04LG06F2221/2107G06T2201/0083G06F