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基于网络编码云存储的数据完整性校验过程,面临着验证过程中计算开销较大、安全性弱等问题。为解决这些问题,该文提出了基于零空间的网络编码云存储数据完整性校验方案——NS-NCCS。该方案首先计算出原始信息的零空间,利用零空间生成验证向量,并将验证向量发送给独立的第3方验证节点完成数据验证。分析与计算结果表明:与NC-Audit方案相比,该方案在完整性验证过程中可以显著降低漏检率、有效防止验证节点反推出原始信息、节省计算开销以及有效支持数据修复。
Data integrity verification based on network coding cloud storage faces the problems of large computing cost and weak security in the verification process. In order to solve these problems, this paper proposes NS-NCCS, a zero-space network-based cloud storage data integrity check scheme. The scheme first calculates the zero space of the original information, generates a verification vector using zero space, and sends the verification vector to an independent third-party verification node for data verification. The analysis and calculation results show that compared with NC-Audit scheme, this scheme can significantly reduce the missed detection rate in the integrity verification process, and effectively prevent the verification node from deducing original information, saving computing overhead and effectively supporting data recovery.