Countermeasure to power analysis attacks through time-varying impedance of power delivery networks
US9755822B2 · kind B2 · utility
13Cited by
14References
20Claims
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Key dates
| Filing date | Jun 17, 2014 |
| Grant date | Sep 5, 2017 |
| Priority date | — |
| Expiry date | Jul 7, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/12
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method and system for a countermeasure to power analysis attacks, where an impedance element is coupled to a power source providing power to a cryptographic module causing a measurable power supply noise, a timing sequence is generated, and the impedance element is decoupled from the power source based on the timing sequence to cause the measurable power supply noise to vary according to the timing sequence.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.