Presentation 2020-05-20
Improved Quantum Information Set Decoding Algorithm with Low Memory
Naoto Kimura, Atsushi Takayasu, Tsuyoshi Takagi,
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Abstract(in Japanese) (See Japanese page)
Abstract(in English) The security of code-based cryptoststems relates to the hardness of the syndrome decoding problem. The best decoding algorithms are known as information set decoding (ISD) algorithms proposed by E. Prange. In this paper, we propose a quantum ISD algorithm based on the L. Both ISD algorithm (PhD thesis, 2018) and the E. Kirshanova quantum walk (PQCrypto 2018). This results in an improvement of time complexity in the condition of low memory compared with existing quantum ISD algorithms.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) Syndrome Decoding Problem / Information Set Decoding (ISD) Algorithm / Grover Algorithm / Quantum Walk
Paper # ISEC2020-3
Date of Issue 2020-05-13 (ISEC)

Conference Information
Committee ISEC
Conference Date 2020/5/20(1days)
Place (in Japanese) (See Japanese page)
Place (in English) Online
Topics (in Japanese) (See Japanese page)
Topics (in English)
Chair Shiho Moriai(NICT)
Vice Chair Shoichi Hirose(Univ. of Fukui) / Tetsuya Izu(Fujitsu Labs.)
Secretary Shoichi Hirose(NICT) / Tetsuya Izu(Tsukuba Univ.)
Assistant Dai Yamamoto(Fujitsu Labs.) / 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) Improved Quantum Information Set Decoding Algorithm with Low Memory
Sub Title (in English)
Keyword(1) Syndrome Decoding Problem
Keyword(2) Information Set Decoding (ISD) Algorithm
Keyword(3) Grover Algorithm
Keyword(4) Quantum Walk
1st Author's Name Naoto Kimura
1st Author's Affiliation The University of Tokyo(Univ. Tokyo)
2nd Author's Name Atsushi Takayasu
2nd Author's Affiliation National Institute of Information and Communications Technology(NICT)
3rd Author's Name Tsuyoshi Takagi
3rd Author's Affiliation The University of Tokyo(Univ. Tokyo)
Date 2020-05-20
Paper # ISEC2020-3
Volume (vol) vol.120
Number (no) ISEC-28
Page pp.pp.15-22(ISEC),
#Pages 8
Date of Issue 2020-05-13 (ISEC)