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Identity-Based Encryption Using Bilinear Pairing
Author(s): Ci Yunfei, Li Fenghua, Shi Guozhen, Xie Rongna, Department of Information Security, Beijing Electronic Science and Technology Institute, Institute of Information Engineering, Chinese Academy of Sciences
Pages: 34-
39
Year: 2015
Issue:
2
Journal: Beijing Electronics Information Time Guiding
Keyword: identity-based encryption; private key sharing; Threshold Secret Sharing Scheme; analysis of performance; security proof;
Abstract: In order to solve the user’s private key sharing problem in the authenticated identity-based encryption scheme. This paper,based on the BF-IBE schemes,combined with Threshold Secret Sharing Scheme,proposes two new improvements. With the existing schemes,the poper makes a comparative analysis of performance. Analysis showes that the new schemes had the equivalent computing and communication costs. But the user’s private key sharing is safer. Furthermore,the security of the new schemes is proved.
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