| Efficient and Provably Secure Multi-Recipient Signcryption from Bilinear Pairings |
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| 作者姓名： | LI Fagen HU Yupu LIU Shuanggen |
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| 作者单位： | [1]Key Laboratory of Computer Networks and InformationSecurity, Ministry of Education, Xidian University, Xi＇an 710071,Shaanxi, China; [2]College of Computer Information Engineering, JiangxiNormal University, Nanchang 330022, Jiangxi, China |
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| 基金项目： | Foundation item： Supported by the National Natural Science Foundation of China （60473029） |
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| 摘 要： | 0 Introduction Confidentiality, integrity, non-repudiation and au- thentication are the important requirements for many cryptographic applications. A traditional approach to achieve these requirements is to sign-then-encrypt the message. Signcryption, fir…
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| 关 键 词： | 计算机 安全保密 双线性 谕示模型 |
| 文章编号： | 1007-1202（2007）01-0017-04 |
| 收稿时间： | 2006-05-30 |
Efficient and provably secure multi-recipient signcryption from bilinear pairings |
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| LI Fagen HU Yupu LIU Shuanggen.Efficient and Provably Secure Multi-Recipient Signcryption from Bilinear Pairings[J].Wuhan University Journal of Natural Sciences,2007,12(1):17-20. |
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| Authors: | Li Fagen Hu Yupu Liu Shuanggen |
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| Institution: | (1) Key Laboratory of Computer Networks and Information Security, Ministry of Education, Xidian University, Xi’an, 710071, Shaanxi, China;(2) College of Computer Information Engineering, Jiangxi Normal University, Nanchang, 330022, Jiangxi, China |
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| Abstract: | Signcryption is a cryptographic primitive that performs signature and encryption simultaneously, at lower computational costs and communication overheads than the signature-then- encryption approach. In this paper, we propose an efficient multi-recipient signcryption scheme based on the bilinear pairings, which broadcasts a message to multiple users in a secure and authenticated manner. We prove its semantic security and unforgeability under the Gap Diffie-Hellman problem assumption in the random oracle model. The proposed scheme is more efficient than re-signcrypting a message n times using a signcryption scheme in terms of computational costs and communication overheads. |
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| Keywords: | signcryption multi-recipient signcryption bilinear pairings provable security |
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