面向云存储的多副本文件完整性验证方案

发布时间：2018-06-24 04:29

本文选题：云存储 + 一致性　；参考：《计算机研究与发展》2014年07期

【摘要】：文件完整性验证是云存储服务的一项重要安全需求.研究者已经提出多项针对云存储文件完整性验证的机制,例如数据持有性验证(prove of data possession,PDP)或者数据可恢复证明(proof of retrievability,POR)机制.但是,现有方案只能够证明远程云存储持有一份正确的数据,不能检验其是否保存多份冗余存储.在云存储场景中,用户需要验证云存储确实持有一定副本数的正确文件,以防止部分文件意外损坏时无法通过正确的副本进行恢复.提出的多副本文件完整性验证方案,能够帮助用户确定服务器正确持有的文件副本数目,并能够定位出错的文件块位置,从而指导用户进行数据恢复.实验证明,充分利用了多服务器分布式计算的优势,在验证效率上优于单副本验证方案.
[Abstract]:File integrity verification is an important security requirement of cloud storage service. Researchers have proposed a number of mechanisms to verify the integrity of cloud storage files, such as data holding validation (prove of data possessionPDP) or data recoverability proof (proof of retrieval (proof of) mechanism. However, the existing scheme can only prove that remote cloud storage holds a correct data, and can not verify whether the remote cloud storage holds multiple redundant storage. In a cloud storage scenario, the user needs to verify that cloud storage does hold the correct file with a certain number of copies to prevent some files from being unrecoverable by the correct copy if some files are accidentally damaged. The proposed multi-copy file integrity verification scheme can help the user to determine the number of file replicas correctly held by the server and to locate the wrong file block so as to guide the user in data recovery. Experiments show that the advantages of multi-server distributed computing are fully utilized and the efficiency of verification is better than that of single-copy verification scheme.
【作者单位】：中国科学院软件研究所可信计算与信息保障实验室;国家超级计算深圳中心(深圳云计算中心);
【基金】：国家自然科学基金项目(61232005,61100237) 深圳市战略新兴产业发展专项基金项目(CXZZ20120831113048965)
【分类号】：TP333

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