Electrical computers and digital processing systems: support – Data processing protection using cryptography – Tamper resistant
Reexamination Certificate
2001-04-18
2010-10-05
Dada, Beemnet W (Department: 2435)
Electrical computers and digital processing systems: support
Data processing protection using cryptography
Tamper resistant
Reexamination Certificate
active
07809959
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.
REFERENCES:
patent: 4932053 (1990-06-01), Fruhauf et al.
patent: 5404402 (1995-04-01), Sprunk
patent: 5944833 (1999-08-01), Ugon
patent: 6195752 (2001-02-01), Pfab
patent: 6327661 (2001-12-01), Kocher et al.
patent: 6419159 (2002-07-01), Odinak
patent: 6594760 (2003-07-01), Ryan et al.
patent: 6615354 (2003-09-01), Ohki et al.
patent: 6839847 (2005-01-01), Ohki et al.
patent: 6907526 (2005-06-01), Tanimoto et al.
patent: 2003/0005206 (2003-01-01), Kniffler
“Soft Microcontroller” Dallas Semiconductor Corp., Oct. 6, 1993, pp. 1-3, 7,8, 73, 77-80, 152-156, 229, 290-292.
Cohen, Frederick B.,Operating system protection through program evolution*, Computers & Security, vol. 12, No. 6, Oct. 1993, pp. 565-584, Oxford, GB.
Dabbous Nora
Naccache David
Buchanan & Ingersoll & Rooney PC
Dada Beemnet W
Gemalto SA
LandOfFree
Countermeasure method in a microcircuit, microcircuit... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Countermeasure method in a microcircuit, microcircuit..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Countermeasure method in a microcircuit, microcircuit... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4149967