From: cyper@tutanota.com
To: Milan Broz <gmazyland@gmail.com>
Cc: Cryptsetup <cryptsetup@lists.linux.dev>
Subject: Re: [feature] PQC KEM
Date: Mon, 29 Jun 2026 19:50:43 +0200 (CEST) [thread overview]
Message-ID: <OwJVFO9--F-9@tutanota.com> (raw)
In-Reply-To: <eeba13d0-3337-4213-8751-53de0838c474@gmail.com>
Avoid low-entropy passphrase. (I am aware of key file which is yet another passphase pass to pbkdf)
Avoid pbkdf cause the default one argon2 is not fips compliant.
Enable public recipient access.
29 Jun 2026 at 17:42 by gmazyland@gmail.com:
> On 6/29/26 6:27 PM, cyper@tutanota.com wrote:
>
>> Interested in introducing a new LUKS2 "xwing" keyslot type unlocked by an X-Wing
>> post-quantum hybrid KEM (ML-KEM-768 + X25519, draft-connolly-cfrg-xwing-kem)
>> instead of a passphrase to encrypt the kek (volume key)?
>>
>> 1) asymmetric model won't shine in single user case but will be attractive in multiple user/image enrollment cases.
>> 2) if per-device fresh wrapping key is desired
>>
>>
>> I've implemented such keyslot type and tested. But don't know if the aforementioned two cases is worth discussion.
>>
>
> This is typically something that should be done through LUKS2 external token while keeping keyslot
> encryption as it is defined in LUKS. (Maybe you did it that way, no idea.)
>
> Anyway, what security issue this solves (except "it is PQC")?
>
> Milan
>
next prev parent reply other threads:[~2026-06-29 17:50 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-06-29 16:27 [feature] PQC KEM cyper
2026-06-29 16:42 ` Milan Broz
2026-06-29 17:50 ` cyper [this message]
2026-06-29 18:40 ` Arno Wagner
2026-06-30 13:51 ` cyper
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=OwJVFO9--F-9@tutanota.com \
--to=cyper@tutanota.com \
--cc=cryptsetup@lists.linux.dev \
--cc=gmazyland@gmail.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox