Presentation 2015-11-06
Postpaid electronic money to keep privacy and its implementation
Tatshuhiko Sukegawa, Mashu Sakai, Hikaru Morita,
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Abstract(in Japanese) (See Japanese page)
Abstract(in English) Postpaid electronic money schemes are provided by credit-card companies. In these schemes, after electronic money is used, its user settles for its credit card. However the credit-card company grasps the most information of trading. Thus, the credit-card company may hurt users' privacy. In addition, since shops can know the information such as ID to specify an individual, users' anonymity may not be kept. This paper proposes a new scheme to keep users' privacy against credit-card companies and to protect users' anonymity against shops. Furthermore, after this scheme are implemented on a PC and a tablet terminal, its feasibility is estimated.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) Privacy / Anonymity / Electronic-money / Blind signature
Paper # ISEC2015-48,SITE2015-35,LOIS2015-42
Date of Issue 2015-10-30 (ISEC, SITE, LOIS)

Conference Information
Committee LOIS / ISEC / SITE
Conference Date 2015/11/6(2days)
Place (in Japanese) (See Japanese page)
Place (in English) Kanagawa Univ.
Topics (in Japanese) (See Japanese page)
Topics (in English)
Chair Manabu Okamoto(NTT) / Yukiyasu Tsunoo(NEC) / Noriaki Yoshikai(Nihon Univ.)
Vice Chair Hiroyuki Nishi(Sojo Univ.) / Masahiro Mambo(Kanazawa Univ.) / Kazuto Ogawa(NHK) / Hitoshi Okada(NII) / Tetsuya Morizumi(Toyo Networks & System Integration)
Secretary Hiroyuki Nishi(Tsuda College) / Masahiro Mambo(NTT) / Kazuto Ogawa(AIST) / Hitoshi Okada(Toshiba) / Tetsuya Morizumi(Shibaura Inst. of Tech.)
Assistant Yu Ichifuji(NII) / Tetsuya Izu(Fujitsu Lab.) / Takaaki Mizuki(Tohoku Univ.) / Noritaka Yamashita(NEC) / Takahiro Haga(Gifu Shotoku Gakuen Univ.)

Paper Information
Registration To Technical Committee on Life Intelligence and Office Information Systems / Technical Committee on Information Security / Technical Committee on Social Implications of Technology and Information Ethics
Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) Postpaid electronic money to keep privacy and its implementation
Sub Title (in English)
Keyword(1) Privacy
Keyword(2) Anonymity
Keyword(3) Electronic-money
Keyword(4) Blind signature
1st Author's Name Tatshuhiko Sukegawa
1st Author's Affiliation Kanagawa University(Kanagawa Univ.)
2nd Author's Name Mashu Sakai
2nd Author's Affiliation Kanagawa University(Kanagawa Univ.)
3rd Author's Name Hikaru Morita
3rd Author's Affiliation Kanagawa University(Kanagawa Univ.)
Date 2015-11-06
Paper # ISEC2015-48,SITE2015-35,LOIS2015-42
Volume (vol) vol.115
Number (no) ISEC-293,SITE-294,LOIS-295
Page pp.pp.81-86(ISEC), pp.81-86(SITE), pp.81-86(LOIS),
#Pages 6
Date of Issue 2015-10-30 (ISEC, SITE, LOIS)