Distributed certification application via a trusted dealer |
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| Authors: | Liu Duan-yang Pan Xue-zeng Ping Ling-di |
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| Institution: | (1) Department of Computer, Zhejiang University, 310027 Hangzhou, China |
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| Abstract: | Distributed certification via threshold cryptography is much more secure than other ways to protect certification authority
(CA)'s private key, and can tolerate some intrusions. As the original system such as ITTC, etc., is unsafe, inefficient and
impracitcal in actual network environment, this paper brings up a new distributed certification scheme, which although it
generates key shares concentratively, it updates key shares distributedly, and so, avoids single-point failure like ITTC.
It not only enhances robustness with Feldman verification and SSL protocol, but can also change the threshold (t, k) flexibly and robustly, and so, is much more practical. In this work, the authors implement the prototype system of the new
scheme and test and analyze its performance.
Project supported by the Nature Science Foundation of China (No. 79974031) and Zhejiang Nature Science Foundation (No. 600014) |
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| Keywords: | Distributed certification Trusted dealer Robust Flexible |
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