Methods and devices against side-channel analysis
US10439796B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 28, 2017 |
| Grant date | Oct 8, 2019 |
| Priority date | — |
| Expiry date | Mar 30, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/12
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method for executing an operation whereby a first input data, may be combined with a second input data, may include: defining data pairs whereby each data of a first input set is associated with a respective data of a second input set, the data in the first and second input sets may be obtained by applying Exclusive OR (XOR) operations to the first and second input data and to all first and second mask parameters of first and second mask sets; and computing output data by applying the operation to each of the data pairs, to obtain an output set, the first and second mask sets being such that a combination by XOR operations of each pairs of corresponding first and second mask parameters may produce a third mask set, where each mask sets may include a word column having a same number of occurrences of all possible values of the words.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.