面向云备份系统的多级隐私保护机制.docx
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面向云备份系统的多级隐私保护机制
刘霞;冯朝胜;罗王平
【摘 要】Aiming at the problems of the existing cloud security storage
system that it encrypts the user data without classification,especially for
the implicit privacy big data,resulting in the system performance
degradation,a multilevel privacy protection mechanism for cloud backup
system was proposed,where a flexible and low overhead multilevel
encryption mechanism was applied to the explicit privacy data and a
segment reconfiguration mechanism with partial data encrypting randomly
was applied to the implicit privacy data according to privacy data
classification.Based on the proposed mechanism,a cloud backup system
which ensured privacy protection was implemented.Experimental results
show that the backup system based on the proposed privacy protection
mechanism is more efficient than traditional backup system on the same
privacy protection level.%针对现有云安全存储系统对所有用户数据未经分类,尤
其是对暗隐私大数据一概采用加密方法造成系统性能低下的问题,提出一种面向云
备份系统的多级隐私保护机制.将用户隐私数据进行分类处理,明隐私数据采用灵活
低开销的多级加密机制,暗隐私数据采用部分数据随机加密的分割重构机制;基于该
机制,设计和实现一个确保隐私性的云备份系统.实验结果表明,基于所提出多级隐私
保护机制实现的备份系统在隐私保护上和基于加密策略实现的备份系统相当,但备
份效率更高.
【期刊名称】《计算机工程与设计》
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