Method and system for protecting against side channel attacks when performing cryptographic operations
US7404089B1 · kind B1 · utility
8Cited by
2References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 3, 2005 |
| Grant date | Jul 22, 2008 |
| Priority date | — |
| Expiry date | Sep 15, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2207/7261
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method and system for protecting against side channel attacks on cryptographic systems that attempt to recover information from externally detectable signals, such as electromagnetic fields or power input variations. A system operates in accordance with the subject invention to process a message using a cryptographic protocol involving a secret key d. The protocol includes a step for computing the result of iteratively performing a binary operation [op] on a digital quantity G, where a secret key d is taken as an integer value, such as elliptic curve scalar point multiplication or modular exponentiation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.