Abstract: With the development of cloud storage, data security issues in the cloud are becoming increasingly prominent. Aiming at the data security problem in the cloud, a cloud data integrity detection scheme based on linear coding (DISLC) based on linear coding is proposed. The DISLC model combines homomorphic labels and linear network coding. Combined with the characteristics of network coding, a coding method suitable for cloud data protection was designed. This method not only realizes repeated verification of cloud data integrity, but also supports dynamic operation of cloud data. After analysis, this method can not only improve the security and integrity of data in the cloud, but also effectively reduce the computational overhead and communication overhead during cloud storage.

Key words: cloud storage, network coding, repeat verification, integrity verification, dynamic operation

摘要： 随着云存储的不断发展，云中数据安全问题日渐突出．针对云中数据安全问题，提出了一个基于线性编码的云中数据完整性检测方案（the cloud data integrity detection scheme based on linear coding ,DISLC）,DISLC模型把同态标签和线性网络编码结合起来，通过结合网络编码的特性，设计了一个适用于云数据保护的编码方法．该方法不仅实现了云数据完整性的反复验证，而且支持云数据的动态操作．经过分析，该方法不仅可以提高云中数据的安全性和完整性，而且可以有效降低云存储过程中的计算和通信开销．

关键词: 云存储, 网络编码, 重复验证, 完整性验证, 动态操作