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by lambo4bkfast 1255 days ago
Any insight into how this is done without impacting performance for reads as they now need to decrypt the data?
1 comments

I’d guess that the top tier of S3 physical storage is all SSD, and hardware-driven encryption on such devices is virtually free, as well as desirable for lifecycle reasons.

To allow this to double as ”user level” encryption you need to coordinate & manage the keys used vs. just picking something random when the drive is formatted. This is how Apple’s and others’ full-disk encryption has worked for years.