Efficient threshold public key encryption with full security based on dual pairing vector spaces |
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| Authors: | Yuanju Gan Lihua Wang Licheng Wang Ping Pan Yixian Yang |
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| Affiliation: | 1. Information Security Center, State Key Laboratory of Networking and Switching Technology, Beijing University of Posts and Telecommunications, Beijing, China;2. School of Information, Guangdong Ocean University, Zhanjiang, China;3. Network Security Research Institute, National Institute of Information and Communications Technology (NICT), Tokyo, Japan |
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| Abstract: | Most robust and noninteractive threshold public key encryption (PKE) schemes have only been proven secure against chosen‐ciphertext attacks under the static corruption model; yet, the dynamic corruption model is more reasonable. In this paper, on the basis of bilinear groups of prime order and dual pairing vector spaces, we propose a threshold PKE scheme that is noninteractive, robust and, secure against adaptive chosen‐ciphertext attacks under the dynamic corruption model without random oracles. Moreover, our scheme is shown to be more efficient than currently existing fully secure threshold PKE schemes. Copyright © 2013 John Wiley & Sons, Ltd. |
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| Keywords: | threshold public key encryption dynamic corruption model chosen‐ciphertext attacks dual pairing vector spaces |
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