Patent ID: 11930098
Assignee: SECURED-IC SAS
Field: Digital communication (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 14:
15. A method for detecting perturbation attacks performed on a digital circuit, wherein the method comprises:
arranging a first metallic layer and a second metallic layer on said digital circuit, said first metallic layer comprising a plurality of signal transmission lines routed horizontally, said second metallic layer comprising a plurality of signal transmission lines routed vertically, each signal transmission line connecting a transmitter buffer to a receiver buffer;
generating random signal values;
transmitting, by a transmitter manager, the random signal values over the signal transmission lines of the first metallic layer and the second metallic layer, said random signal values being transmitted from one or more transmitter buffers connected to said transmitter manager, to one or more receiver buffers connected to a receiver manager;
receiving said random signal values by said receiver manager;
measuring a transmission time corresponding to a time of transmission of said received random signal values and;
comparing said transmission time to a predefined timing interval to detect perturbation attacks.