Cryptographic method capable of protecting elliptic curve code from side channel attacks
US7676037B2 · kind B2 · utility
8Cited by
6References
24Claims
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Key dates
| Filing date | Dec 20, 2004 |
| Grant date | Mar 9, 2010 |
| Priority date | — |
| Expiry date | Jan 6, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/34
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
An elliptic curve cryptography method which generates a public key for use in a communication encryption using an elliptic curve, including: changing a number of a secret key (d) of (k) bits to an odd number; encoding the secret key to yield an encoded secret key (d) in which a most significant bit (MSB) is (1) and a rest positional number is (1) or (−1); and computing the public key (Q=Dp) by multiplying the encoded secret key (d) by a predetermined point (P) on the elliptic curve by a scalar multiplication.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.