Presentation 2019-03-08
A Lower Bound of the Joint Capacity of Digital Fingerprinting Codes against a Mixed Attack
Tatsuya Sekine, Hiroki Koga,
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Abstract(in Japanese) (See Japanese page)
Abstract(in English) Digital ?ngerprinting codes are embedded in digital contents for protecting copyrights of the digital contents against malicious users who generate a pirated copy. Usually, digital ?ngerprinting codes should be designed so that a part (or all) of the malicious users can be speci?ed with high probability. In this paper, we consider the situation where two malicious users choose two distinct attack models and use their mixture for generation of a pirated copy. We succeed in obtaining a lower bound of the joint capacity for this case by giving an identi?cation algorithm of the two malicious users based on a certain score function. Key words digital ?ngerprintingcodes, collusion attack, joint capacity.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) digital fingerprintingcodes / collusion attack / joint capacity
Paper # IT2018-119,ISEC2018-125,WBS2018-120
Date of Issue 2019-02-28 (IT, ISEC, WBS)

Conference Information
Committee IT / ISEC / WBS
Conference Date 2019/3/7(2days)
Place (in Japanese) (See Japanese page)
Place (in English) University of Electro-Communications
Topics (in Japanese) (See Japanese page)
Topics (in English) joint meeting of IT, ISEC, and WBS
Chair Jun Muramatsu(NTT) / Atsushi Fujioka(Kanagawa Univ.) / Minoru Okada(NAIST)
Vice Chair Tadashi Wadayama(Nagoya Inst. of Tech.) / Shiho Moriai(NICT) / Shoichi Hirose(Univ. of Fukui) / Koji Ohuchi(Shizuoka Univ.) / Kenichi Takizawa(NICT)
Secretary Tadashi Wadayama(Nagano Pref Inst. of Tech.) / Shiho Moriai(UEC) / Shoichi Hirose(Tokai Univ.) / Koji Ohuchi(NICT) / Kenichi Takizawa(Ibaraki Univ.)
Assistant Takahiro Yoshida(Yokohama College of Commerce) / Kazunari Omote(Tsukuba Univ.) / Yuuji Suga(IIJ) / Ryohei Nakamura(National Defense Academy) / Duong Quang Thang(NAIST)

Paper Information
Registration To Technical Committee on Information Theory / Technical Committee on Information Security / Technical Committee on Wideband System
Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) A Lower Bound of the Joint Capacity of Digital Fingerprinting Codes against a Mixed Attack
Sub Title (in English)
Keyword(1) digital fingerprintingcodes
Keyword(2) collusion attack
Keyword(3) joint capacity
1st Author's Name Tatsuya Sekine
1st Author's Affiliation University of Tsukuba(U. Tsukuba)
2nd Author's Name Hiroki Koga
2nd Author's Affiliation University of Tsukuba(U. Tsukuba)
Date 2019-03-08
Paper # IT2018-119,ISEC2018-125,WBS2018-120
Volume (vol) vol.118
Number (no) IT-477,ISEC-478,WBS-479
Page pp.pp.269-274(IT), pp.269-274(ISEC), pp.269-274(WBS),
#Pages 6
Date of Issue 2019-02-28 (IT, ISEC, WBS)