论文部分内容阅读
为了认证跨云环境下用户数据的完整性,该文提出了一种协同的动态数据持有CDDP(cooperative dynamic data possession)方案。首先,利用分层Hash索引技术,将多个云存储服务提供商的响应消息聚合为一个消息,通过云存储服务提供商、组织者和可信第三方之间的交互通信实现了数据的持有性认证。其次,通过对Hash索引表(indexHash table)中只涉及更新数据块的索引记录和标签信息的更新,实现了数据修改、数据插入和数据删除等用户数据的动态更新。结果表明:该方案降低了计算时间,具有完备性和抵抗伪造攻击等属性。
In order to authenticate the integrity of user data across cloud environments, this paper proposes a cooperative dynamic data possession (CDDP) scheme. First, using hierarchical Hash indexing technology, the response messages of multiple cloud storage service providers are aggregated into one message, and the data is held through the interactive communication between cloud storage service providers, organizers and trusted third parties Sexual certification. Secondly, updating the index records and label information in the indexHash table which only involves updating the data blocks, the user data such as data modification, data insertion and data deletion are dynamically updated. The results show that this scheme reduces the calculation time, has completeness and counterfeit attacks and other properties.