Information security – Protection of hardware
Reexamination Certificate
2005-02-09
2009-06-30
Chai, Longbit (Department: 2431)
Information security
Protection of hardware
C726S035000, C380S287000, C713S194000
Reexamination Certificate
active
07555787
ABSTRACT:
The invention relates to an electronic device for cryptographic processing, having at least two electronic circuits (IC, CC, CP) coupled via a connection means, wherein the connection means is arranged for transferring data signals between the two electronic circuits. The electronic device further has a monitoring circuit (401) arranged to monitor a deviation in the capacitance of the connection means. In case the deviation exceeds a predetermined value an alert signal (411) is generated.
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patent: 2003/0218475 (2003-11-01), Gammel
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Khalkhal A et al: “On-Chip Measurement of Interconnect Capacitances in a CMOS Process”; Proceedings of the International Conf. on Microelectronic Test Structures NARA JP; Mar. 22-25, 1995; N.Y. IEEE US; Mar. 22, 1995; pp. 145-149.
Chai Longbit
NXP B.V.
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