They don't seem to do that, though. Note that they claim that it's a random key and that deduplication is "much more likely" to happen when files are copied. If

They don't seem to do that, though. Note that they claim that it's a random key and that deduplication is "much more likely" to happen when files are copied. If they would derive the key from the data in a deterministic way, they could always dedup and the previous statement (deduplication of copied files is more likely) could not be true. edit: Clarify.