Re: [Mimi] Metadata Minimal MIMI (MIMIMI)

Hi Konrad, thank you for sharing this!

At first glance, it seems this approach has the same efficiency as using
encrypted handshake messages. That is, when I add a user to a group, I need
to upload an encrypted blob whose size scales linearly with the number of
members in the group. Is that right?

I'm also concerned about the property that, if I'm ever added to even one
group with a user, then I learn their connection key. Then I can use their
connection key to de-anonymize them in any other group, regardless of
whether I've been in that group or not.

On Fri, Apr 5, 2024 at 5:34 AM Konrad Kohbrok <konrad.kohbrok@datashrine.de>
wrote:

> Hi folks,
>
> Raphael and I just uploaded an I-D with a proposal that sketches a
> pseudonym-based MIMI variant that aims to reduce MIMI’s metadata footprint.
> You can find it here:
> https://datatracker.ietf.org/doc/draft-kohbrok-mimi-metadata-minimalization/
>
> We have been working on this approach for a while now and have already
> implemented and run a variant of what’s described in the I-D.
>
> The I-D is quite high-level for now to make the concepts easier to grasp.
> If people are interested we can fill in gaps and add details in the next
> iterations.
>
> Looking forward to continuing the discussion around metadata in the
> context of MIMI and any questions regarding our I-D!
>
> Cheers,
> Konrad
>
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