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Rethinking Block Storage Encryption with Virtual Disks. (arXiv:2205.15545v1 [cs.CR])
June 1, 2022, 1:20 a.m. | Danny Harnik, Oded Naor, Effi Ofer, Or Ozery
cs.CR updates on arXiv.org arxiv.org
Disk encryption today uses standard encryption methods that are length
preserving and do not require storing any additional information with an
encrypted disk sector. This significantly simplifies disk encryption management
as the disk mapping does not change with encryption. On the other hand, it
forces the encryption to be deterministic when data is being overwritten and it
disallows integrity mechanisms, thus lowering security guarantees. Moreover,
because the most widely used standard encryption methods (like AES-XTS) work at
small sub-blocks of …
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