| Presentation | 2016-12-21 Improvements of 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 ablacklist without TTP has been proposed. However, since the computation time required for the authentication depends on the size of the whitelist with non-blacklisted session IDs , the authentication time is increased as thewhitelist size become bigger. In this paper, we propose a new scheme that reduces authentication time by adapting the accumulator from the whitelist to the blacklist. Then, we show the effectiveness of the proposed scheme by implementing it on a PC. Moreover, we show an extension to reuse the session IDs by reseting the IDs of public information. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Anonymous authentication / Blacklist / Accumulator |
| Paper # | ISEC2016-70,COMP2016-31 |
| Date of Issue | 2016-12-14 (ISEC, COMP) |
| Conference Information | |
| Committee | COMP / ISEC |
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| Conference Date | 2016/12/21(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Hiroshima University |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | Hiroo Itoh(Univ. of Electro-Comm.) / Masahiro Mambo(Kanazawa Univ.) |
| Vice Chair | Yuushi Uno(Osaka Pref. Univ.) / Kazuto Ogawa(NHK) / Atsushi Fujioka(Kanagawa Univ.) |
| Secretary | Yuushi Uno(Seikei Univ.) / Kazuto Ogawa(Kobe Univ.) / Atsushi Fujioka(Toshiba) |
| Assistant | / Toshihiro Ohigashi(Tokai Univ.) / Yuuji Suga(IIJ) / Atsuo Inomata(Tokyo Denki Univ.) |
| Paper Information | |
| Registration To | Technical Committee on Theoretical Foundations of Computing / Technical Committee on Information Security |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Improvements of 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 | 2016-12-21 |
| Paper # | ISEC2016-70,COMP2016-31 |
| Volume (vol) | vol.116 |
| Number (no) | ISEC-380,COMP-381 |
| Page | pp.pp.1-7(ISEC), pp.1-7(COMP), |
| #Pages | 7 |
| Date of Issue | 2016-12-14 (ISEC, COMP) |