fully secure doubly-spatial encryption under simple assumptions

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	fully secure doubly-spatial encryption under simple assumptions
	Chen Cheng; Zhang Zhenfeng; Feng Dengguo
	2012
会议名称	6th International Conference on Provable Security, ProvSec 2012
会议录名称	Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
页码	253-263
会议日期	September 26, 2012 - September 28, 2012
会议地点	Chengdu, China
收录类别	EI
ISSN	0302-9743
ISBN	9783642332715
部门归属	(1) Institute of Software Chinese Academy of Sciences Beijing China
摘要	Recently, Hamburg improved the notion of spatial encryption by presenting a variant called doubly-spatial encryption. As a generalization of the spatial encryption, the doubly-spatial encryption is more powerful and expressive. More useful cryptography systems can be built from it, such as attribute-based encryption, etc. However, the only presented doubly-spatial encryption scheme can only be proved to be selectively secure. In this paper, we primarily focus on the full security of doubly-spatial encryption. A doubly-spatial encryption scheme has been proposed. We apply the dual system methodology proposed by Waters in the security proof. Our scheme can be proved adaptively secure under standard assumptions, the decisional linear assumption and the decisional bilinear Diffe-Hellman assumption, over prime order groups in the standard model. Our scheme is the first fully secure construction of doubly-spatial encryption. As an independent interest, we also propose a fully secure spatial encryption with weak anonymity and constant ciphertext size in the composite order group settings. © 2012 Springer-Verlag.; Recently, Hamburg improved the notion of spatial encryption by presenting a variant called doubly-spatial encryption. As a generalization of the spatial encryption, the doubly-spatial encryption is more powerful and expressive. More useful cryptography systems can be built from it, such as attribute-based encryption, etc. However, the only presented doubly-spatial encryption scheme can only be proved to be selectively secure. In this paper, we primarily focus on the full security of doubly-spatial encryption. A doubly-spatial encryption scheme has been proposed. We apply the dual system methodology proposed by Waters in the security proof. Our scheme can be proved adaptively secure under standard assumptions, the decisional linear assumption and the decisional bilinear Diffe-Hellman assumption, over prime order groups in the standard model. Our scheme is the first fully secure construction of doubly-spatial encryption. As an independent interest, we also propose a fully secure spatial encryption with weak anonymity and constant ciphertext size in the composite order group settings. © 2012 Springer-Verlag.
关键词	Artificial Intelligence
主办者	University of Electronic Science and Technology of China (UESTC)
语种	英语
内容类型	会议论文
URI标识	http://ir.iscas.ac.cn/handle/311060/15772
专题	中国科学院软件研究所
推荐引用方式 GB/T 7714	Chen Cheng,Zhang Zhenfeng,Feng Dengguo. fully secure doubly-spatial encryption under simple assumptions[C],2012:253-263.