Document Type
Article - postprint
Department
Claremont Graduate University, Mathematical Sciences (CGU), Claremont McKenna College, Mathematics (CMC)
Publication Date
2014
Abstract
Cyclic lattices are sublattices of ZN that are preserved under the rotational shift operator. Cyclic lattices were introduced by D.~Micciancio and their properties were studied in the recent years by several authors due to their importance in cryptography. In particular, Peikert and Rosen showed that on cyclic lattices in prime dimensions, the shortest independent vectors problem SIVP reduces to the shortest vector problem SVP with a particularly small loss in approximation factor, as compared to general lattices. In this paper, we further investigate geometric properties of cyclic lattices. Our main result is a counting estimate for the number of well-rounded cyclic lattices, indicating that well-rounded lattices are more common among cyclic lattices than generically. We also show that SVP is equivalent to SIVP on a positive proportion of Minkowskian well-rounded cyclic lattices in every dimension. As an example, we demonstrate an explicit construction of a family of such lattices on which this equivalence holds. To conclude, we introduce a class of sublattices of ZN closed under the action of subgroups of the permutation group SN, which are a natural generalization of cyclic lattices, and show that our results extend to all such lattices closed under the action of any N-cycle.
Rights Information
© 2014 Fukshansky, Sun
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Recommended Citation
Fukshansky, Lenny, Hiren Maharaj. "Lattices from elliptic curves over finite fields." Finite Fields and Their Applications, vol. 28 (July 2014), pg. 67--78.
Comments
Source: Author's post-print manuscript in PDF.