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Mathematics of Computation

ISSN 1088-6842(online) ISSN 0025-5718(print)



On the discrete logarithm
in the divisor class group of curves

Author: Hans-Georg Rück
Journal: Math. Comp. 68 (1999), 805-806
MSC (1991): Primary 11T71; Secondary 94A60
MathSciNet review: 1622281
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Abstract: Let $X$ be a curve which is defined over a finite field $k$ of characteristic $p$. We show that one can evaluate the discrete logarithm in $Pic_0(X)_{p^n}$ by $O(n^2 \log p)$ operations in $k$. This generalizes a result of Semaev for elliptic curves to curves of arbitrary genus.

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Hans-Georg Rück
Affiliation: Institut für Experimentelle Mathematik, Universität GH Essen, Ellernstr. 29, D-45326 Essen, Germany

Received by editor(s): August 8, 1997
Article copyright: © Copyright 1999 American Mathematical Society