[Cryptography] Disk encryption

[David Kane-Parry]

On Tue, Mar 28, 2023 at 7:40 PM Dave Horsfall <dave at horsfall.org> wrote:
> I've never used disk encryption before, so I have some concerns.
>
> My understanding is that each encrypted block depends upon the previous
> block (if not the entire chain), so what happens should an intermediate
> block become corrupted?

The predominant block cipher mode for disk encryption is XTS-AES,
standardized in IEEE P1619 and approved with one change in NIST SP 800-38E.
XTS-AES blocks are not chained, so when a block is corrupted, only that
block is corrupted.

- d.
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