Electronic digital logic circuitry – Security
Reexamination Certificate
2006-09-12
2006-09-12
Barnie, Rexford (Department: 2819)
Electronic digital logic circuitry
Security
C326S037000, C326S038000, C326S094000, C713S190000, C713S193000, C713S194000
Reexamination Certificate
active
07106091
ABSTRACT:
A circuit configuration for detecting an unwanted attack on an integrated circuit has a signal line to which a clock signal is applied and at least one line pair which is respectively used to code a bit. The signal line and the at least one line pair are connected between a first and a second circuit block in the integrated circuit. The signal line and the at least one line pair are connected to a detector circuit which changes the operating sequence in the integrated circuit on the basis of the signals on the signal line and on the at least one line pair. The detector circuit can be used to the same extent to test for production faults.
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Barnie Rexford
Crawford Jason
Greenberg Laurence A.
Infineon - Technologies AG
Locher Ralph E.
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