| Presentation | 2020-11-06 Speeding Up a Revocable Group Signature Scheme for Crowdsensing Yuto Nakazawa, Toru Nakanishi, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | In crowdsensing, many users carrying mobile terminals send environmental data and congestion status to the server together with the user’s location information, and the server analyzes the data to perform environmental monitoring and congestion forecast at the city level. In crowdsensing, in order to realize efficient user authentication with privacy protection, a revocable group signature scheme has been proposed, where the burden on the user side is reduced and the revocation check is performed at high speed．However，in this previous scheme，there is a problem in signature generation and verification times because the zero-knowledge proof is performed by two certificates．Therefore, in this research, we speed up the signature generation and verification processes by extending it so that the zero-knowledge proof can be performed with a single certificate．Then, its effectiveness is shown by expetriments based on an implementation on a PC. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Crowdsensing / Revocable Group Signature / Verifier-Local Revocation / Pairing |
| Paper # | ISEC2020-34,SITE2020-31,LOIS2020-14 |
| Date of Issue | 2020-10-30 (ISEC, SITE, LOIS) |
| Conference Information | |
| Committee | LOIS / ISEC / SITE |
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| Conference Date | 2020/11/6(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Online |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | Toru Kobayashi(Nagasaki Univ.) / Shoichi Hirose(Univ. of Fukui) / Masaru Ogawa(Kobe Gakuin Univ.) |
| Vice Chair | Hiroyuki Toda(NTT) / Tetsuya Izu(Fujitsu Labs.) / Noboru Kunihiro(Tsukuba Univ.) / Takushi Otani(Kibi International Univ.) / Takeo Tatsumi(Open Univ. of Japan) |
| Secretary | Hiroyuki Toda(NTT) / Tetsuya Izu(Nagasaki Univ.) / Noboru Kunihiro(Tsukuba Univ.) / Takushi Otani(Fujitsu Labs.) / Takeo Tatsumi(KDDI Research) |
| Assistant | Shigeru Fujimura(NTT) / Kazuki Yoneyama(Ibaraki Univ.) / Daisuke Suzuki(Hokuriku Univ.) / Hideyuki Fujii(NRI-Secure) |
| 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) | Speeding Up a Revocable Group Signature Scheme for Crowdsensing |
| Sub Title (in English) | |
| Keyword(1) | Crowdsensing |
| Keyword(2) | Revocable Group Signature |
| Keyword(3) | Verifier-Local Revocation |
| Keyword(4) | Pairing |
| 1st Author's Name | Yuto Nakazawa |
| 1st Author's Affiliation | Hiroshima University(Hiroshima Univ.) |
| 2nd Author's Name | Toru Nakanishi |
| 2nd Author's Affiliation | Hiroshima University(Hiroshima Univ.) |
| Date | 2020-11-06 |
| Paper # | ISEC2020-34,SITE2020-31,LOIS2020-14 |
| Volume (vol) | vol.120 |
| Number (no) | ISEC-224,SITE-225,LOIS-226 |
| Page | pp.pp.13-18(ISEC), pp.13-18(SITE), pp.13-18(LOIS), |
| #Pages | 6 |
| Date of Issue | 2020-10-30 (ISEC, SITE, LOIS) |