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A comment on Ask HN: How secure is the encryption offered by OS X's Disk Utility?. Parent comment

Re:Ask HN: How secure is the encryption offered by OS X's Di... by dchest on Monday June 19, 2017 @06:59AM (#14585943)
Yes, thread model for full disk encryption is defined for an attacker that has ability to read the encrypted contents of disk at any point in time.

CTR mode is also malleable at bit level, while XTS is less so (this matters when an attacker can modify the encrypted contents).

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