| Presentation | 2016-11-09 Design of a Threshold-based Authentication System Which Provides Attributes Using Secret Sharing Tomohiro Ito, Daisuke Kotani, Yasuo Okabe, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | In identity federation, each service provider verifies the identity of a user based on authentication performed by an authentication server called an Identity Provider (IdP). When the IdP suffer troubles like an unauthorized person has cracked into the IdP or the IdP is unreachable due to a network problem, all services in the federation are affected by them. Simple replication of servers for the IdP causes privacy concern because raw attribute values of users must be copied to many servers, including some servers that may not be fully trusted. In order to maintain the function as an IdP even under such troubles, we propose a system in which servers of the IdP are distributed and cooperate using threshold-based authentication and secret sharing. In this paper, we design the system from the viewpoint of management of attribute values so that an administrator of the IdP can update the values anytime while keeping consistency of attribute values among the servers in the IdP. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Attributes / Secret Sharing / Threshold-based Authentication |
| Paper # | IA2016-57 |
| Date of Issue | 2016-11-02 (IA) |
| Conference Information | |
| Committee | IA |
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| Conference Date | 2016/11/9(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Onuma International Seminar Hous |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Student Sessions, etc. (cosponsored by JSPS 163rd Committee on Internet Technology) |
| Chair | Ken-ichi Yoshida(Univ. of Tsukuba) |
| Vice Chair | Hiroyuki Osaki(Kwansei Gakuin Univ.) / Masahiro Jibiki(NICT) / Tomoki Yoshihisa(Osaka Univ.) |
| Secretary | Hiroyuki Osaki(Tokyo Inst. of Tech.) / Masahiro Jibiki(Ritsumeikan Univ.) / Tomoki Yoshihisa |
| Assistant | Yusuke Sakumoto(Tokyo Metropolitan Univ.) / Yuichiro Hei(KDDI R&D Labs.) / Toshiki Watanabe(NEC) |
| Paper Information | |
| Registration To | Technical Committee on Internet Architecture |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Design of a Threshold-based Authentication System Which Provides Attributes Using Secret Sharing |
| Sub Title (in English) | |
| Keyword(1) | Attributes |
| Keyword(2) | Secret Sharing |
| Keyword(3) | Threshold-based Authentication |
| 1st Author's Name | Tomohiro Ito |
| 1st Author's Affiliation | Kyoto University(Kyoto Univ.) |
| 2nd Author's Name | Daisuke Kotani |
| 2nd Author's Affiliation | Kyoto University(Kyoto Univ.) |
| 3rd Author's Name | Yasuo Okabe |
| 3rd Author's Affiliation | Kyoto University(Kyoto Univ.) |
| Date | 2016-11-09 |
| Paper # | IA2016-57 |
| Volume (vol) | vol.116 |
| Number (no) | IA-292 |
| Page | pp.pp.7-12(IA), |
| #Pages | 6 |
| Date of Issue | 2016-11-02 (IA) |