Method for making secure an electronic entity with encrypted access
US7796750B2 · kind B2 · utility
1Cited by
7References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 2, 2003 |
| Grant date | Sep 14, 2010 |
| Priority date | — |
| Expiry date | Jun 16, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/24
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method for protecting an electronic entity with encrypted access, against DFA (Differential Fault Analysis) attacks which includes: storing the result of a selected step (Rm, Kn) of an iterative process forming part of the cryptographic algorithm and in performing once more at least part of the steps of the iterative process up to a new computation of a result corresponding to the one which has been stored, comparing the two results and denying distribution of an encrypted message (MC) if they are different.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.