Using cryptographic blinding for efficient use of Montgomery multiplication
US11522669B2 · kind B2 · utility
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18Claims
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Key dates
| Filing date | Mar 26, 2019 |
| Grant date | Dec 6, 2022 |
| Priority date | — |
| Expiry date | Mar 26, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/12
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Aspects of the present disclosure involves receiving an input message, generating a first random value that is used to blind the input message input message to prevent a side-channel analysis (SCA) attack, computing a second random value using the first random value and a factor used to compute the Montgomery form of a blinded input message without performing an explicit Montgomery conversion of the input message, and computing a signature using Montgomery multiplication, of the first random value and the second random value, wherein the signature is resistant to the SCA attack.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.