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题名:
efficient unidirectional proxy re-encryption
作者: Chow Sherman S. M. ; Weng Jian ; Yang Yanjiang ; Deng Robert H.
会议文集: Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
会议名称: 3rd International Conference on Cryptology in Africa, AFRICACRYPT 2010
会议日期: May 3, 201
出版日期: 2010
会议地点: Stellenbosch, South africa
关键词: Network security
出版地: Germany
收录类别: ei
ISSN: 3029743
ISBN: 3642126774
部门归属: (1) Department of Computer Science, Courant Institute of Mathematical Sciences, New York University, NY, United States; (2) Department of Computer Science, Jinan University, Guangzhou, China; (3) School of Information Systems, Singapore Management University, Singapore, Singapore; (4) State Key Laboratory of Information Security, Institute of Software, Chinese Academy of Sciences, Beijing, China; (5) Institute for Infocomm Research, Singapore, Singapore
英文摘要: Proxy re-encryption (PRE) allows a semi-trusted proxy to convert a ciphertext originally intended for Alice into one encrypting the same plaintext for Bob. The proxy only needs a re-encryption key given by Alice, and cannot learn anything about the plaintext encrypted. This adds flexibility in various applications, such as confidential email, digital right management and distributed storage. In this paper, we study unidirectional PRE, which the re-encryption key only enables delegation in one direction but not the opposite. In PKC 2009, Shao and Cao proposed a unidirectional PRE assuming the random oracle. However, we show that it is vulnerable to chosen-ciphertext attack (CCA). We then propose an efficient unidirectional PRE scheme (without resorting to pairings). We gain high efficiency and CCA-security using the "token-controlled encryption" technique, under the computational Diffie-Hellman assumption, in the random oracle model and a relaxed but reasonable definition. © 2010 Springer-Verlag.
语种: 英语
内容类型: 会议论文
URI标识: http://ir.iscas.ac.cn/handle/311060/8744
Appears in Collections:中科院软件所图书馆_2010软件所会议论文

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Recommended Citation:
Chow Sherman S. M.,Weng Jian,Yang Yanjiang,et al. efficient unidirectional proxy re-encryption[C]. 见:3rd International Conference on Cryptology in Africa, AFRICACRYPT 2010. Stellenbosch, South africa. May 3, 201.
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