Enabling efficient and secure data sharing in cloud computing

Enabling efficient and secure data sharing in cloud computing
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在云计算中实现高效、安全的数据共享

DOI:
10.1002/cpe.3067
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发表时间:
2014-04
影响因子:
2
通讯作者:
Jia, Chunfu
Jia, Chunfu
中科院分区:
计算机科学4区
文献类型:
--
作者:
Li, Jingwei;Li, Jin;Liu, Zheli;Jia, Chunfu

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随着云计算的快速发展,越来越多的数据被集中到远程云服务器上进行共享,这就对如何保持这些数据的私密性和可访问性提出了挑战。尽管可搜索加密提供了一种有效的解决方案来支持直接对加密数据进行基于关键字的搜索,但考虑到它在文件共享中的应用,现有的工作依赖于授权用户之间的密钥共享,这不可避免地带来了密钥泄露和滥用的风险。本文针对云计算中高效、安全的数据共享问题,提出了一种通用的云计算数据共享架构。提出的结构功能齐全:(I)它允许授权用户直接对加密数据进行基于关键字的搜索,而无需共享唯一的密钥;(Ii)它提供双层访问控制,以限制未经授权的用户访问共享数据。在提出的通用结构的基础上,利用现有的基于身份的广播加密和公钥可搜索加密技术实例化了一个具体的结构。版权所有©2013 John Wiley&Sons,Ltd.
With the rapid development of cloud computing, more and more data are being centralized into remote cloud server for sharing, which raises a challenge on how to keep them both private and accessible. Although searchable encryption provides an efficient solution to support keyword‐based search directly on encrypted data, considering its application in file sharing, existing work depends on key sharing among authorized users, which inevitably causes the risks of key exposure and abuse. In this paper, aiming at enabling efficient and secure data sharing in cloud computing, we provide a generic construction for this purpose. The proposed construction is full‐featured: (i) It enables authorized users to perform keyword‐based search directly on encrypted data without sharing the unique secret key; and (ii) it provides two‐layered access control to limit unauthorized user's access to the shared data. On the basis of the proposed generic construction, we utilize the existing techniques on identity‐based broadcast encryption and public key searchable encryption to instantiate a concrete construction. Copyright © 2013 John Wiley & Sons, Ltd.
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