Method of executing a cryptographic protocol between two electronic entities
US8612761B2 · kind B2 · utility
0Cited by
8References
17Claims
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Key dates
| Filing date | Jan 30, 2001 |
| Grant date | Dec 17, 2013 |
| Priority date | — |
| Expiry date | Jul 8, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/08
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Perfected cryptographic protocol making it possible to counter attacks based on the analysis of the current consumption during the execution of a DES or similar.According to the invention, a message (M) is processed by two entities (A and B) and the entity (B) subject to attack executes a chain of operations known as DES in which it is chosen to carry out a given operation (O1, O2, O3 . . . On) or the same operation complemented (Ō1, Ō2, Ō3 . . . Ōn), the choice being random.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.