Patent · US Active

Device for detecting an attack against an integrated circuit chip

US7889778B2 · kind B2 · utility

5Cited by

2References

15Claims

0Family size

Assignee

STMicroelectronics SA

Inventors

Fabrice Marinet · Gardanne, FR
Camille Botella · Gap, FR

Key dates

Filing date	Mar 31, 2005
Grant date	Feb 15, 2011
Priority date	—
Expiry date	Oct 10, 2027

Classification

Technology area (CPC H)Electricity
CPC primaryH01L2924/0002
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

A circuit for detecting attacks by contacting an integrated circuit chip comprising means for applying a random signal to a first terminal of at least one conductive path formed in at least one first metallization level of the chip, means for comparing the applied signal with a signal present on a second terminal of the path, and means for delaying the comparison time with respect to the application time, of a duration longer than or equal to the propagation delay through the first path.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.