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Title:
fully secure doubly-spatial encryption under simple assumptions
Author: Chen Cheng ; Zhang Zhenfeng ; Feng Dengguo
Source: Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
Conference Name: 6th International Conference on Provable Security, ProvSec 2012
Conference Date: September 26, 2012 - September 28, 2012
Issued Date: 2012
Conference Place: Chengdu, China
Keyword: Artificial intelligence
Indexed Type: EI
ISSN: 0302-9743
ISBN: 9783642332715
Department: (1) Institute of Software Chinese Academy of Sciences Beijing China
Sponsorship: University of Electronic Science and Technology of China (UESTC)
Abstract: 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.
English Abstract: 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.
Language: 英语
Content Type: 会议论文
URI: http://ir.iscas.ac.cn/handle/311060/15772
Appears in Collections:软件所图书馆_会议论文

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Recommended Citation:
Chen Cheng,Zhang Zhenfeng,Feng Dengguo. fully secure doubly-spatial encryption under simple assumptions[C]. 见:6th International Conference on Provable Security, ProvSec 2012. Chengdu, China. September 26, 2012 - September 28, 2012.
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