Hardware component and a method for implementing a camouflage of current traces generated by a digital system
US11906581B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 17, 2020 |
| Grant date | Feb 20, 2024 |
| Priority date | — |
| Expiry date | Jul 17, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04K2203/20
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Implementing a camouflage of current traces generated by a hardware component having one or more set of digital elements defining a plurality of operational datapaths comprises adjusting (761) one or more working condition(s) of the hardware component, measuring (762) a reaction of the hardware component to the working condition(s) by a logic test circuit through processing data operations along a reference datapath having a minimum duration corresponding to at least the longest of the operational datapaths, and in response to detecting an error (763) along the reference datapath, modifying (764) the working condition(s) so that the error generated by the logic test circuit is cancelled. Applications to countermeasures to side-channel attacks.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.