Integrated circuit having an active shield

Details Integrated circuit having an active shield Integrated circuit having an active shield

2005-11-08

2005-11-08

StCyr, Daniel (Department: 2876)

Registers

Records

Conductive

C235S487000

Reexamination Certificate

active

06962294

ABSTRACT:
Integrated circuit having security-critical circuit components arranged in a lower plane, data lines arranged in an upper plane, situated at least in part above the security-critical circuit components arranged in the lower plane, and connected to the security-critical circuit components, and a detector circuit that identifies an attack on the integrated circuit. The detector circuit has a transmitting device that transmits predetermined test data into the security-critical circuit components arranged in the lower plane, a receiving device that receives the data processed by the security-critical circuit components arranged in the lower plane, and an evaluation device that compares the received data with expected data and that ascertains any non-correspondence. The data lines carry the predetermined test data that is transmitted by the transmitting device and is processed by the security-critical circuit components.

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Verbauwhede, I. et al.; “ASIC Cryptographical processor based on DES”; EURO ASIC '91 Paris, France, May 27-31, 1991, Los Alamitos, CA, USA, IEEE Comput. Soc, US. pp. 292-295, XP010024405.

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