講演抄録/キーワード |
講演名 |
2019-11-02 10:00
Evolving Secret Sharing: Hierarchical Access Structure with Polynomial Share Size Sabyasachi Dutta(Univ. of Calgary)・Partha Sarathi Roy・Kazuhide Fukushima・Shinsaku Kiyomoto(KDDI Research)・○Kouichi Sakurai(Kyushu Univ.) ISEC2019-76 SITE2019-70 LOIS2019-35 |
抄録 |
(和) |
Secret sharing allows storing secret information in a distributed manner among several participants.
The original setting of secret sharing schemes assumes that the total number of participants does not change from the very beginning. However, we need to consider the scenario where any time a new participant can join, and the total number of participants is (possibly) unbounded. Evolving secret sharing solves the problem, and secret sharing for evolving threshold access structure has been considered in the last few years. In this paper, we study multi-level access structures, and more specifically, evolving compartmental and hierarchical access structures. We provide concrete constructions with the estimation of share sizes. |
(英) |
Secret sharing allows storing secret information in a distributed manner among several participants.
The original setting of secret sharing schemes assumes that the total number of participants does not change from the very beginning. However, we need to consider the scenario where any time a new participant can join, and the total number of participants is (possibly) unbounded. Evolving secret sharing solves the problem, and secret sharing for evolving threshold access structure has been considered in the last few years. In this paper, we study multi-level access structures, and more specifically, evolving compartmental and hierarchical access structures. We provide concrete constructions with the estimation of share sizes. |
キーワード |
(和) |
進化型アクセス構造 / 区分型アクセス構造 / 階層型アクセス構造 / 情報理論的安全性 / / / / |
(英) |
Evolving Access Structure / compartmental access structure / hierarchical access structure / information theoretic security / / / / |
文献情報 |
信学技報, vol. 119, no. 257, ISEC2019-76, pp. 93-98, 2019年11月. |
資料番号 |
ISEC2019-76 |
発行日 |
2019-10-25 (ISEC, SITE, LOIS) |
ISSN |
Print edition: ISSN 0913-5685 Online edition: ISSN 2432-6380 |
著作権に ついて |
技術研究報告に掲載された論文の著作権は電子情報通信学会に帰属します.(許諾番号:10GA0019/12GB0052/13GB0056/17GB0034/18GB0034) |
PDFダウンロード |
ISEC2019-76 SITE2019-70 LOIS2019-35 |
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