多云存储中基于身份的数据持有性公开证明方案

摘要

Provable data possession (PDP) is one of the key technologies to solve the security problems that exist in cloud storage, while PDP for multi-cloud is a new research subject with distributed computing characteristic.Nevertheless, there are few PDP schemes for multi-cloud proposed so far.What's more, there are many defects such as inability to resist collusive attack and low computation efficiency in the existing schemes.To address these weaknesses, a PDP scheme based on identity for multi-cloud which supports public verification is proposed, and the correctness of the scheme is proved.Moreover, security feature and performance analysis are made to illustrate that the proposed scheme takes higher performance, especially much advanced computation efficiency than the other multi-cloud PDP schemes.%数据持有性证明技术是解决云存储中数据安全问题的关键技术之一,多云存储下的数据持有性证明则是具有分布式特性的较新的一个研究课题.为了解决目前多云存储下的数据持有性证明技术方案少、安全性差、计算效率低等问题,提出一个适用于多云存储的、基于身份的、支持公开证明的数据持有性证明方案,并对方案的正确性、安全性和性能进行了详细的分析.分析比较结果说明所提方案比其他方案具有更好的性能,尤其具有高得多的计算效率.