Electrical computers and digital processing systems: support – Data processing protection using cryptography – Tamper resistant
Reexamination Certificate
2008-05-20
2008-05-20
Barron, Jr., Gilberto (Department: 2132)
Electrical computers and digital processing systems: support
Data processing protection using cryptography
Tamper resistant
C712S220000, C712S245000
Reexamination Certificate
active
07376844
ABSTRACT:
A countermeasure method for a microcontroller that executes sequences of instructions. The instructions are executed according to a pipeline method. At least one waiting time is randomly introduced between two consecutive instructions and/or within at least one instruction. The method is implemented by the electronics of the microcontroller rather than by software addition.
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Cohen, Frederick, B.,Operating system protection through program evolution, Computers & Security, vol. 12, No. 6, Oct. 1993, pp. 565-584, Oxford, GB.
Barron Jr. Gilberto
Buchanan & Ingersoll & Rooney PC
Gemplus
Herring Virgil
LandOfFree
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