[Cryptography] New White Paper: GhostLine - Information-Theoretically Secure Multi-Party Chat

[Michael Kjörling]

On 6 Sep 2025 04:02 +0000, from cryptography at metzdowd.com (Ferecides de Siros via cryptography):
> Key Contributions:
> - First open-source, multi-participant implementation combining Shannon-perfect secrecy with information-theoretic message authentication
> - Novel protocol preventing state desynchronization attacks in multi-party OTP settings
> - Formal security proofs and analysis of critical implementation challenges

As seemingly evident from the discussion in this thread, I would argue
that this focus is too broad. Also the focus of the discussion is
probably influenced by your choice of title, which does not mention
multi-party state synchronization or protection against state
desynchronization attacks at all.

If you are serious about this, then I would suggest to start out by
focusing on your "novel protocol preventing state desynchronization
attacks in multi-party OTP settings", as that is the fundamental
building block for the other two. Delete the other parts, delete the
references to a one-time pad, and update accordingly the parts that
remain. Provide a detailed analysis of that protocol _in isolation_,
including its security, privacy and integrity properties, and a
discussion on how it relates to prior art.

_Given that_, you can then self-cite in another publication and
present and discuss your "multi-participant implementation combining
Shannon-perfect secrecy with information-theoretic message
authentication" which _uses_ this novel protocol to protect against
state desynchronization attacks.

In other words: separate your concerns. This makes it easier to focus
on each on its respective merits.

Also, just to be completely clear on this point: this is not an
analysis or critique of your claims; only the presentation of them.

-- 
Michael Kjörling
🔗 https://michael.kjorling.se