| Presentation | 2015-11-06 Reducing Authentication Time in Blacklistable Anonymous Credential System Using Accumulator Yuu Aikou, Toru Nakanishi, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | In current ID-based user authentication schemes, privacy issues may occur, since users' behavior histories are collected in Service Providers (SPs). Although anonymous authentications such as group signatures have been proposed, these schemes rely on a Trusted Third Party (TTP) capable of tracing misbehaving users. Thus, the privacy is not high, because TTP can allways trace users. Therefore, the anonymous authentication using a blacklist without TTP has been proposed. However, since the computation time required for the authentication depends on the number of tickets in the blacklist, the authentication time is increased if lots of users are revoked. In this paper, we propose a new blacklistable anonymous credential scheme using an accumulator which can compress multiple elements and prove the inclusion of sets of elements. Then, we show the effectiveness of the proposed scheme by implementing it on a PC. From the measurement results, we confirm that the proposed scheme can achieve faster authentications than the previous shceme,in proper settings of parameters. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Anonymous authentication / Blacklist / Accumulator |
| Paper # | ISEC2015-47,SITE2015-34,LOIS2015-41 |
| Date of Issue | 2015-10-30 (ISEC, SITE, LOIS) |
| Conference Information | |
| Committee | LOIS / ISEC / SITE |
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| 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 |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Reducing Authentication Time in Blacklistable Anonymous Credential System Using Accumulator |
| Sub Title (in English) | |
| Keyword(1) | Anonymous authentication |
| Keyword(2) | Blacklist |
| Keyword(3) | Accumulator |
| 1st Author's Name | Yuu Aikou |
| 1st Author's Affiliation | Hiroshima University(Hiroshima Univ) |
| 2nd Author's Name | Toru Nakanishi |
| 2nd Author's Affiliation | Hiroshima University(Hiroshima Univ) |
| Date | 2015-11-06 |
| Paper # | ISEC2015-47,SITE2015-34,LOIS2015-41 |
| Volume (vol) | vol.115 |
| Number (no) | ISEC-293,SITE-294,LOIS-295 |
| Page | pp.pp.75-80(ISEC), pp.75-80(SITE), pp.75-80(LOIS), |
| #Pages | 6 |
| Date of Issue | 2015-10-30 (ISEC, SITE, LOIS) |