Secure and effective assured deletion scheme with orderly overwriting for cloud data

【Author】 Tian, Junfeng; Zhang, Tianfeng

【Source】JOURNAL OF SUPERCOMPUTING

【影响因子】2.557

【Abstract】Due to the characteristics of distribution and virtualization, cloud storage is providing almost limitless storage services. Many users choose to upload data to the cloud to reduce storage burden, but the confidentiality of data is also at risk. When the cloud data must be deleted, the assured deletion of the data becomes a crucial problem. Assured deletion can preserve the confidentiality of the users data, and it is also an essential component of cloud storage services. In this paper, a secure and effective assured deletion scheme with orderly overwriting (SEAD-OO) is proposed. The scheme uses ciphertext-policy attribute-based encryption to achieve fine-grained access control and data sharing. To solve the problem of ciphertext left in the cloud after deleting the keys, we introduce physical deletion and logical deletion. Blockchain is introduced to ensure the validity and traceability of deletion. By comparing with related schemes, the proposed SEAD-OO is proved to be versatile. Theoretical analysis and experiments show that the scheme is safe and effective, and it provides a practical method for the assured deletion of cloud data.

【Keywords】Assured deletion; Cloud storage; Orderly overwriting; Deletion queue; Hyperledger fabric

【发表时间】

【收录时间】2022-02-01

【文献类型】期刊

【主题类别】

区块链技术--