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http://dx.doi.org/10.4134/BKMS.2009.46.4.789

AN ALGORITHM FOR COMPUTING A SEQUENCE OF RICHELOT ISOGENIES  

Takashima, Katsuyuki (INFORMATION TECHNOLOGY R&D CENTER MITSUBISHI ELECTRIC)
Yoshida, Reo (DEPARTMENT OF SOCIAL INFORMATICS GRADUATE SCHOOL OF INFORMATICS KYOTO UNIVERSITY)
Publication Information
Bulletin of the Korean Mathematical Society / v.46, no.4, 2009 , pp. 789-802 More about this Journal
Abstract
We show that computation of a sequence of Richelot isogenies from specified supersingular Jacobians of genus-2 curves over $\mathbb{F}_p$ can be executed in $\mathbb{F}_{p2}$ or $\mathbb{F}_{p4}$ . Based on this, we describe a practical algorithm for computing a Richelot isogeny sequence.
Keywords
hyperelliptic curve; genus two; Richelot isogeny; isogeny graph; supersingular curve;
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