Security circuit for detecting physical attack on system semiconductor
US12093434B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 20, 2023 |
| Grant date | Sep 17, 2024 |
| Priority date | — |
| Expiry date | Dec 20, 2043 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K19/17768
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The present disclosure relates to a security circuit for detecting physical attacks on a system semiconductor. The security circuit includes at least: a shielding layer having a mesh structure composed of a transmission line; a processor configured to determine that a focused ion beam (FIB) circuit editing attack was detected when a difference between predetermined counter output and a first counter output is less than a first reference value; determine that a microprobing attack was detected when a difference between the second counter output and the first counter output exceeds a second reference value; and output an alarm signal when detecting the circuit editing attack or the microprobing attack.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.