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Paper 2004/055
Redundant Trinomials for Finite Fields of Characteristic $2$
Christophe Doche
Abstract
In this paper we introduce a new way to represent elements of a finite field of characteristic $2$. We describe a new type of polynomial basis, called {\it redundant trinomial basis} and discuss how to implement it efficiently. Redundant trinomial bases are well suited to build $\mathbb{F}_{2^n}$ when no irreducible trinomial of degree $n$ exists. Tests with {\tt NTL} show that improvements for squaring and exponentiation are respectively up to $45$\% and $25$\%. More attention is given to relevant extension degrees for doing elliptic and hyperelliptic curve cryptography. For this range, a scalar multiplication can be speeded up by a factor up to $15$\%.
Metadata
- Available format(s)
- PDF PS
- Category
- Implementation
- Publication info
- Published elsewhere. Unknown where it was published
- Keywords
- finite field arithmeticelliptic curve cryptography
- Contact author(s)
- doche @ ics mq edu au
- History
- 2004-03-05: revised
- 2004-02-23: received
- See all versions
- Short URL
- https://ia.cr/2004/055
- License
-
CC BY