Presentation 2018-03-09
Attacks on several Multivariate PKCs
Ryuichi Sakai, Masao Kasahara,
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Abstract(in Japanese) (See Japanese page)
Abstract(in English) One of the anthers, Kasahara, have been proposed several public key cryptosystems based on multivariate polynomials with suede random simultaneous equations which are systematically constructed. Recently, the another anther, Sakai, shows that these suede random simultaneous equations can be easily solved by Gr"obner basis attacks. These constructions and attacks have been expected to progress of the research of multivariate public key cryptosystem in the future. In this paper, we show Kasahara's novel construction of the suede random simultaneous equations and Sakai's noteworthy attack on this PKC.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) public key cryptosystem / multivariate polynomial / random coding / Grobner basis attack / MVPKC
Paper # IT2017-138,ISEC2017-126,WBS2017-119
Date of Issue 2018-03-01 (IT, ISEC, WBS)

Conference Information
Committee WBS / IT / ISEC
Conference Date 2018/3/8(2days)
Place (in Japanese) (See Japanese page)
Place (in English) Katsusika Campas, Tokyo University of Science
Topics (in Japanese) (See Japanese page)
Topics (in English) joint meeting of IT, ISEC, and WBS
Chair Fumiaki Maehara(Waseda Univ.) / Masayoshi Ohashi(Fukuoka Univ.) / Kazuto Ogawa(NHK)
Vice Chair Masanori Hamamura(Kochi Univ. of Tech.) / Fumie Ono(NICT) / Jun Muramatsu(NTT) / Atsushi Fujioka(Kanagawa Univ.) / Shiho Moriai(NICT)
Secretary Masanori Hamamura(Mitsubishi Electric) / Fumie Ono(Ibaraki Univ.) / Jun Muramatsu(Yokohama College of Commerce) / Atsushi Fujioka(UEC) / Shiho Moriai(Tohoku Univ.)
Assistant Akira Nakamura(Tokyo Univ. of Science) / Ryohei Nakamura(National Defense Academy) / Sigeaki Kuzuoka(wakayama univ.) / Keita Emura(NICT) / Yuichi Komano(TOSHIBA) / Yuuji Suga(IIJ)

Paper Information
Registration To Technical Committee on Wideband System / Technical Committee on Information Theory / Technical Committee on Information Security
Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) Attacks on several Multivariate PKCs
Sub Title (in English) Attack on K(AVII)MVPKC
Keyword(1) public key cryptosystem
Keyword(2) multivariate polynomial
Keyword(3) random coding
Keyword(4) Grobner basis attack
Keyword(5) MVPKC
1st Author's Name Ryuichi Sakai
1st Author's Affiliation Osaka Electro-Communication University(Osaka Electro-Communication Univ.)
2nd Author's Name Masao Kasahara
2nd Author's Affiliation Waseda Univeristy(Waseda Univ.)
Date 2018-03-09
Paper # IT2017-138,ISEC2017-126,WBS2017-119
Volume (vol) vol.117
Number (no) IT-487,ISEC-488,WBS-489
Page pp.pp.207-212(IT), pp.207-212(ISEC), pp.207-212(WBS),
#Pages 6
Date of Issue 2018-03-01 (IT, ISEC, WBS)