Discrete logarithms for torsion points on elliptic curve of embedding degree 1

Yasuyuki Nogami, Hwajeong Seo

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Recent efficient pairings such as Ate pairing use two efficient subgroups of rational point such that π(P) = P and π(Q) = [p]Q, where π, p, P, and Q are the Frobenius map for rational point, the characteristic of definition field, and torsion points for pairing, respectively. This relation accelerates not only pairing but also pairing–related operations such as scalar multiplications. It holds in the case that the embedding degree k divides r − 1, where r is the order of torsion rational points. Thus, such a case has been well studied. Alternatively, this paper focuses on the case that the degree divides r +1 but not r −1. First, this paper shows a transitive representation for r–torsion points based on the fact that the characteristic polynomial f(π) becomes irreducible over Fr for which π also plays a role of variable. In other words, this paper proposes an elliptic curve discrete logarithm on such a torsion group. After that, together with some example parameters, it is shown how to prepare such pairing–friendly elliptic curves.

Original languageEnglish
Title of host publicationInformation Security and Cryptology - ICISC 2014 - 17th International Conference, Revised Selected Papers
EditorsJongsung Kim, Jooyoung Lee
PublisherSpringer Verlag
Pages69-83
Number of pages15
ISBN (Electronic)9783319159423
DOIs
Publication statusPublished - Jan 1 2014
Event17th International Conference on Information Security and Cryptology, ICISC 2014 - Seoul, Korea, Republic of
Duration: Dec 3 2014Dec 5 2014

Publication series

NameLecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
Volume8949
ISSN (Print)0302-9743
ISSN (Electronic)1611-3349

Other

Other17th International Conference on Information Security and Cryptology, ICISC 2014
CountryKorea, Republic of
CitySeoul
Period12/3/1412/5/14

Keywords

  • Group structure
  • Pairing–friendly curve
  • Torsion point

ASJC Scopus subject areas

  • Theoretical Computer Science
  • Computer Science(all)

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  • Cite this

    Nogami, Y., & Seo, H. (2014). Discrete logarithms for torsion points on elliptic curve of embedding degree 1. In J. Kim, & J. Lee (Eds.), Information Security and Cryptology - ICISC 2014 - 17th International Conference, Revised Selected Papers (pp. 69-83). (Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics); Vol. 8949). Springer Verlag. https://doi.org/10.1007/978-3-319-15943-0_5