Galois field computation
US7668895B2 · kind B2 · utility
1Cited by
3References
6Claims
0Family size
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Key dates
| Filing date | Dec 1, 2004 |
| Grant date | Feb 23, 2010 |
| Priority date | — |
| Expiry date | Sep 5, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2207/7209
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method and device for computing the multiplicative inverse of element x in Galois field GF(p2m) is proposed. In particular, when p is a prime number and m is an integer, the inverse may be constructed based on the observation that xp+1 is en element in sub-field GF(pm) and the inverse of xp+1 can be carried out in the sub-field. The inverse of X may be obtained by multiplying x−1=(xp+1)−1 by xp.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.