Method for determining an integrity sum, associated computer program and electronic entity
US11132466B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 16, 2018 |
| Grant date | Sep 28, 2021 |
| Priority date | — |
| Expiry date | Sep 21, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/046
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method for determining a first integrity sum including the following steps: determining a first masked item of data by application of an “exclusive OR” operation between a first item of data and a first data mask; —determining a second item of data by application to the first masked item of data of a first cryptographic function, the second item of data being masked by a second data mask; —determining a second integrity sum associated with the second item of data by application to the second item of data of a checksum function; and determining the first integrity sum by application of an “exclusive OR” operation between the second integrity sum and a third integrity sum associated with the second data mask. A computer program and an electronic entity are also described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.