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http://hdl.handle.net/10119/9850
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| Title: | T-Robust Scalable Group Key Exchange Protocol with O(logn) Complexity |
| Authors: | Hatano, Tetsuya
Miyaji, Atsuko
Sato, Takashi |
| Keywords: | group key exchange
robustness
scalability |
| Issue Date: | 2011-07-02 |
| Publisher: | Springer |
| Magazine name: | Lecture Notes in Computer Science |
| Volume: | 6812/2011 |
| Start page: | 189 |
| End page: | 207 |
| DOI: | 10.1007/978-3-642-22497-3_13 |
| Abstract: | Group key exchange (GKE) allows a large group of n parties to share a common secret key over insecure channels. The goal of this paper is to present T-robust scalable GKEwith communicational and computational complexity O(log n) forn parties.As a result, our GKE not only has a resistance to party failures resulting from party crashes, run-down batteries, and network failures, but also satisfiesscalability: parties do not need to have the sameenvironment such as computational resources, batteries, etc.The previous schemes in this area focus onBurmester-Desmedt GKE with complexity O(n) (BDI) and without scalability.As a result, the previous robust GKEs, proposed byJarecki, Kim and Tsudik (JKT), need computationalcomplexity O(n) without scalability,although they withstand any T-party fault in any position.We, by focusing on the well-known Burmester-Desmedt GKE with complexity O(log n) (BDII), propose a new robust GKE with scalability, called CH-GKE.CH-GKE can reduce the communicational and computationalcomplexity and allow parties to be in different environments.Then, we extend CH-GKE to increase the number of faults withstood andpresent T-robust scalable efficient GKE by a novel combinationof CH-GKE and JKT.Our T-robust scalable GKE can work inflexible settings with trade-offs between fault tolerance and efficiency,such as communicational and computational complexity. |
| Rights: | This is the author-created version of Springer, Tetsuya Hatano, Atsuko Miyaji, and Takashi Sato, Lecture Notes in Computer Science, 6812/2011, 2011, 189-207. The original publication is available at www.springerlink.com, http://dx.doi.org/10.1007/978-3-642-22497-3_13 |
| URI: | http://hdl.handle.net/10119/9850 |
| Material Type: | author |
| Appears in Collections: | b10-1. 雑誌掲載論文 (Journal Articles)
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