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Title :Weaknesses of cubic UOV and its variants
Authors :Hashimoto, Yasufumi
Issue Date :28-Dec-2017
Abstract :The unbalanced oil and vinegar signature scheme (UOV) is a signature scheme whose public key is a set of multivariate quadratic forms over a finite field. This -signature scheme has been considered to be secure and efficient enough under suitable parameter selections. However, the key size of UOV is relatively large and then reducing the key size of UOV is an important issue. Recently in Inscrypt 2015, a new variant of UOV called Cubic UOV was proposed, and in ICISC 2016, two variants of Cubic UOV called CSSv and SVSv were proposed. It has been claimed that these variants were more efficient than the original UOV and were secure enough. However, the security analyses of these schemes were not enough and they can be broken easily. In the present paper, we describe the weaknesses of these schemes.
Type Local :紀要論文
ISSN :1344-008X
Publisher :Department of Mathematical Sciences, Faculty of Science, University of the Ryukyus
URI :http://hdl.handle.net/20.500.12000/37571
Citation :Ryukyu mathematical journal Vol.30 p.1 -7
Appears in Collections:Vol.30 (2017)

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