Zero divisors protecting exponentiation
US8639944B2 · kind B2 · utility
1Cited by
3References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 30, 2009 |
| Grant date | Jan 28, 2014 |
| Priority date | — |
| Expiry date | Jun 10, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F7/723
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The invention relates to a method and to an electronic device for securing the computation of a modular exponentiation x=mD mod N against invasive attacks. The invention comprises applying a mask to the message m, and after the modular exponentiation is carried out, in verifying that the exponentiation was not altered thanks to properties introduced by the mask.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.