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Paper 2009/058

On Generalization of Cheon's Algorithm

Takakazu Satoh

Abstract

We consider a generalization of Cheon's algorithm on the strong Diffie-Hellman problem. More specifically, we consider the circumstance that p^k-1 has a small divisor for k>=3, where p is the order of group on which we consider the strong Diffie-Hellman problem. It seems that our algorithm is only effective for k=1, 2, that is, the original Cheon's algorithm.

Note: The exponent in (5) and the proof of Lemma 2 are corrected. The author would like to thank Dr. Sungwook Kim for pointing out them.

Metadata
Available format(s)
PDF
Category
Public-key cryptography
Publication info
Published elsewhere. None.
Keywords
strong Diffie-Hellman problem
Contact author(s)
satohcgn @ mathpc-satoh math titech ac jp
History
2010-10-11: last of 2 revisions
2009-02-06: received
See all versions
Short URL
https://ia.cr/2009/058
License
Creative Commons Attribution
CC BY
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