From: Eric Biggers <ebiggers@kernel.org>
To: Christoph Anton Mitterer <calestyo@scientia.org>
Cc: Qu Wenruo <wqu@suse.com>,
linux-btrfs@vger.kernel.org, linux-crypto@vger.kernel.org
Subject: Re: [PATCH] btrfs-progs: docs: add warning for btrfs checksum features
Date: Sat, 22 Nov 2025 00:52:00 +0000 [thread overview]
Message-ID: <20251122005200.GC3300186@google.com> (raw)
In-Reply-To: <5493c0684cc1014614ae156e9b8888d52857d2bf.camel@scientia.org>
On Sat, Nov 22, 2025 at 12:55:18AM +0100, Christoph Anton Mitterer wrote:
> On Fri, 2025-11-21 at 17:14 +1030, Qu Wenruo wrote:
> >
> > Adding linux-crypto list for more feedback.
>
> It would be good if any of them could confirm or reject:
>
> - Whether a filesystem that uses full checksumming (data + meta-data)
> and that is encrypted with dm-crypt,... is effectively integrity
> protected like it would be with an AEAD.
No, encrypting checksummed data using an unauthenticated encryption mode
isn't equivalent to an AEAD.
- Eric
next prev parent reply other threads:[~2025-11-22 0:52 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-11-21 5:03 [PATCH] btrfs-progs: docs: add warning for btrfs checksum features Qu Wenruo
2025-11-21 5:17 ` Christoph Anton Mitterer
2025-11-21 5:24 ` Qu Wenruo
2025-11-21 6:02 ` Christoph Anton Mitterer
2025-11-21 6:44 ` Qu Wenruo
2025-11-21 23:55 ` Christoph Anton Mitterer
2025-11-22 0:52 ` Eric Biggers [this message]
2025-11-22 14:36 ` Neal Gompa
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