Messages in this thread | | | From | Richard Weinberger <> | Date | Thu, 26 Jan 2023 15:23:34 +0100 | Subject | Re: Linux guest kernel threat model for Confidential Computing |
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On Wed, Jan 25, 2023 at 3:22 PM Daniel P. Berrangé <berrange@redhat.com> wrote: > Any virtual device exposed to the guest that can transfer potentially > sensitive data needs to have some form of guest controlled encryption > applied. For disks this is easy with FDE like LUKS, for NICs this is > already best practice for services by using TLS. Other devices may not > have good existing options for applying encryption.
I disagree wrt. LUKS. The cryptography behind LUKS protects persistent data but not transport. If an attacker can observe all IO you better consult a cryptographer. LUKS has no concept of session keys or such, so the same disk sector will always get encrypted with the very same key/iv.
-- Thanks, //richard
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