基于二进制再生编码的云存储公开审计方案

Public auditing scheme based on binary regeneration code in cloud storage

为了实现云存储中数据的完整性,提出一种基于二进制再生编码的公开审计方案(PA-BRC)。该方案可以在实现公开审计、支持批量数据动态更新的同时,保证用户数据隐私及降低分布式拒绝服务攻击。审计方案还可以实现审计者同时去验证多个服务器中的数据,并当检测到存在损坏数据时,能定位损坏数据所在服务器。当检测到数据损坏时,通过采用二进制再生编码,云服务器可以自行恢复数据。更新方案支持批量数据操作,大大降低了计算量和通信开销。安全性和性能分析,表明了提出方案的安全性和有效性。

To achieve the integrity of data in cloud storage,a public auditing scheme based on binary regeneration code(PA-BRC) is proposed.The scheme can guarantee public data privacy and reduce distributed denial of service attacks while implementing public auditing and supporting batch data dynamic update.The audit scheme can verify the data in multiple servers at the same time.When detecting the presence of corrupted data,the scheme can locate the server where the data are damaged.When the data corruption is detected,the cloud server can recover data by itself with binary regeneration code.The update program supports batch data operations,thus reducing the amount of calculation and communication overhead.The security and the performance analysis show the safety and the effectiveness of the scheme.