From Michael Kjörling: > Yes; it implies that the two volumes are encrypted using the same master key (as well as being accessible using the same set of passphrases), _and_ it makes it obvious that this is the case. (Assume any detached header is absent) Obvious by inspecting the raw encrypted drives? My concern is salt/iv reuse for same sector #'s on multiple drives leading to information leakage. For example let's say two encrypted drives were mirrored. Using the same master key would make it obvious they are mirrored, but no additional information is leaked (other than that they are in fact copies of each other). But more complex scenarios exist: RAID, LVM2 headers, etc. Those other scenarios are the ones I am curious about.
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