A New Secret Sharing Scheme Based on the Multi-Dealer
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概要
- 論文の詳細を見る
Almost all the existing secret sharing schemes are based on a single dealer. Maybe in some situations, the secret needs to be maintained by multiple dealers. In this paper, we proposed a novel secret sharing scheme based on the multi-dealer by means of Shamirs threshold scheme and T. Okamoto and S. Uchiyamas public-key cryptosystem. Multiple dealers can commonly maintain the secret and the secret can be dynamically renewed by any dealer. Meanwhile, the reusable secret shadows just needs to be distributed only once. In the secret updated phase, the dealer just needs to publish a little public information instead of redistributing the new secret shadows. Its security is based on the security of Shamirs threshold scheme and the intractability of factoring problem and discrete logarithm problem.
- （社）電子情報通信学会の論文
- 2009-05-01
著者
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SAKURAI Kouichi
Dept. of Computer Science and Communication Engineering, Kyushu University
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GUO Cheng
School of Software, Dalian University of Technology
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LI Mingchu
School of Software, Dalian University of Technology
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Guo Cheng
School Of Software Dalian University Of Technology
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Li Mingchu
School Of Software Dalian University Of Technology
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Sakurai Kouichi
Dept. Of Computer Science And Communication Engineering Kyushu University
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