Electrical computers and digital processing systems: support – Data processing protection using cryptography – Computer instruction/address encryption
Reexamination Certificate
2008-09-30
2008-09-30
Barron, Jr., Gilberto (Department: 2132)
Electrical computers and digital processing systems: support
Data processing protection using cryptography
Computer instruction/address encryption
C713S194000
Reexamination Certificate
active
09629546
ABSTRACT:
Systems and methods are disclosed for protecting a computer program from unauthorized analysis and modification. Obfuscation transformations can be applied to the computer program's local structure, control graph, and/or data structure to render the program more difficult to understand and/or modify. Tamper-resistance mechanisms can be incorporated into the computer program to detect attempts to tamper with the program's operation. Once an attempt to tamper with the computer program is detected, the computer program reports it to an external agent, ceases normal operation, and/or reverses any modifications made by the attempted tampering. The computer program can also be watermarked to facilitate identification of its owner. The obfuscation, tamper-resistance, and watermarking transformations can be applied to the computer program's source code, object code, or executable image.
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pate
Horne William G.
Horning James J.
Maheshwari Umesh
Matheson Lesley R.
Owicki Susan K.
Barron Jr. Gilberto
Finnegan Henderson Farabow Garrett & Dunner LLP
Intertrust Technologies Corp.
Kim Jung
LandOfFree
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