Accelerating Secure and Verifiable Data Deletion in Cloud Storage via SGX and Blockchain. (arXiv:2307.04316v3 [cs.CR] UPDATED)

Secure data deletion enables data owners to fully control the erasure of
their data stored on local or cloud data centers and is essential for
preventing data leakage, especially for cloud storage. However, traditional
data deletion based on unlinking, overwriting, and cryptographic key management
either ineffectiveness in cloud storage or rely on unpractical assumption. In
this paper, we present SevDel, a secure and verifiable data deletion scheme,
which leverages the zero-knowledge proof to achieve the verification of the
encryption of …

blockchain centers cloud cloud data cloud storage control data data centers data leakage deletion key key management local management secure data sgx storage