From: Qu Wenruo <wqu@suse.com>
To: Christoph Anton Mitterer <calestyo@scientia.org>,
linux-btrfs@vger.kernel.org
Subject: Re: [PATCH] btrfs-progs: docs: add warning for btrfs checksum features
Date: Fri, 21 Nov 2025 15:54:26 +1030 [thread overview]
Message-ID: <bc5249ba-9c39-42b1-903d-e50375a433d2@suse.com> (raw)
In-Reply-To: <9523838F-B99E-4CC5-8434-B34B105FD08B@scientia.org>
在 2025/11/21 15:47, Christoph Anton Mitterer 写道:
>
>
> On November 21, 2025 6:03:05 AM GMT+01:00, Qu Wenruo <wqu@suse.com> wrote:
>> The checksum of btrfs, no matter the algorithm utilized, can not provide
>> any guarantee that the metadata/data is not modified by a malicious
>> attacker.
>
> Is that even the case when the wohle btrfs itself is encrypted, like in dm-crypt (without AEAD or verity, but only a normal cipher like aes-xts-plain64)?
> Wouldn't an attacker then neet to know how he can forge the right encrypted checksum?
In that case the attacker won't even know it's a btrfs or not.
Thanks,
Qu
>
> Cheers,
> Chris
next prev parent reply other threads:[~2025-11-21 5:24 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 [this message]
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
2025-11-22 14:36 ` Neal Gompa
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