移动云存储中数据完整性验证的挑战外包算法

Data Integrity Verification of Challenge Outsourcing Algorithms in Mobile Cloud Storage

移动云存储环境下,虽然现有数据完整性验证算法保证了远程存储数据的可用性和安全性,但没有考虑到验证者有限的设备性能,因为大量的验证计算可能导致设备处理器负载过重甚至引发设备过热而自动关机.为此,在现有数据完整性验证算法的基础上提出一种数据完整性的挑战外包算法,以降低验证者的计算负担.所提出的算法会通过满秩线性方程组解的唯一性及可验证的外包双线性对运算将验证者的验证计算安全地外包给云服务提供商.安全性分析与实验结果表明,所提出的算法有好的安全性与有效性.

In the mobile cloud storage environment,although the existing data integrity verification algorithm ensures the availability and security of remotely stored data,it does not consider the limited performance of the verifier’s(mobile user’s)device.A large amount of verification computation may cause the device processor to be overloaded or even trigger the device to become overheated and shut down automatically.To this end,the paper proposes a data integrity verification of challenge outsourcing algorithm to reduce the computational burden of the verifier based on existing data integrity verification algorithms.The algorithm securely outsources the verifier’s verification computation to a cloud service provider through the uniqueness of the solution of a full-rank linear equation system and verifiable outsourced bilinear pair operations.The security analysis and experimental results prove the scheme secure and effective.