计算机科学 ›› 2017, Vol. 44 ›› Issue (2): 195-201.doi: 10.11896/j.issn.1002-137X.2017.02.031
金瑜,严冬
JIN Yu and YAN Dong
摘要： 云存储是一种新兴的网络存储技术,它是云计算提供的一个重要服务。云存储因其快速、廉价和方便而广受云用户喜爱。然而,它也给云用户的外包数据带来了许多安全问题。其中一个重要问题就是如何确保半可信云服务器上数据的完整性。因此,云用户和云服务器亟需一个稳定、安全、可信的数据审计方法。随着大数据时代的到来,传统数据审计方案批量处理云环境下海量数据的效率不高；并且,随着移动客户端的流行,传统数据审计方案带给用户的在线负担太过繁重。因此,提出一种基于MapReduce编程框架的云数据审计方案,使用代理签名技术将用户对数据签名计算代理出去,并且并行化处理数据签名和批量审计过程。实验结果表明,所提方法明显提高了批量审计的效率,增强了云存储服务的可用性,并且减轻了用户的在线负担。
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