Presentation 2018-09-07
Considerations of security of K(Xss)CBPKC, a post-quantum cryptosystem
Masao Kasahara,
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Abstract(in Japanese) (See Japanese page)
Abstract(in English) The author presented a series of code-based PKC(CBPKC) such as KF(XVI)SE(1)PKC, K(Xs)CBPKC, etc. The author suggested that K(Xs)CBPKC would be secure against the various attacks. In this paper we present a most simplified member of the K(Xs)CBPKC, referred to as K(Xss)CBPKC. We show that a theoretical attack on K(Xss)CBPKC does exist. However we verify that the theoretical attack proves to be computationally hard. We also show that no theoretical attack on the public key exists. We expect that K(Xss)CPBKC, a member of K(Xs)CPBKC, may perform effectively as a promissing candidate of PQC.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) PQC / CBPKC / cyclic code / K(X)Transformation / K(X+)Transformation
Paper # ISEC2018-57
Date of Issue 2018-08-31 (ISEC)

Conference Information
Committee ISEC
Conference Date 2018/9/7(1days)
Place (in Japanese) (See Japanese page)
Place (in English) Kikai-Shinko-Kaikan Bldg.
Topics (in Japanese) (See Japanese page)
Topics (in English)
Chair Atsushi Fujioka(Kanagawa Univ.)
Vice Chair Shiho Moriai(NICT) / Shoichi Hirose(Univerisity of Fukui)
Secretary Shiho Moriai(Tokai Univ.) / Shoichi Hirose(NICT)
Assistant Kazumasa Omote(University of Tsukuba) / Yuuji Suga(IIJ)

Paper Information
Registration To Technical Committee on Information Security
Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) Considerations of security of K(Xss)CBPKC, a post-quantum cryptosystem
Sub Title (in English)
Keyword(1) PQC
Keyword(2) CBPKC
Keyword(3) cyclic code
Keyword(4) K(X)Transformation
Keyword(5) K(X+)Transformation
1st Author's Name Masao Kasahara
1st Author's Affiliation Waseda University(Waseda Univ.)
Date 2018-09-07
Paper # ISEC2018-57
Volume (vol) vol.118
Number (no) ISEC-212
Page pp.pp.31-37(ISEC),
#Pages 7
Date of Issue 2018-08-31 (ISEC)