Protection method and device against a side-channel analysis
US11070359B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 28, 2017 |
| Grant date | Jul 20, 2021 |
| Priority date | — |
| Expiry date | Jul 1, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/12
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method for executing an operation by a circuit, may include executing a first operation to process an input data, the circuit generating during the execution of the first operation a first signal, and executing in the circuit a second operation receiving the input data and configured to add to the first signal, between first and second instants during the execution of the first operation, a continuous second signal. A combination of the first and second signal forming a resultant signal in which the second signal may be indistinctly measurable with the first signal from outside of the circuit. The second signal and the resultant signal varying as a function of the input data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.