[MLS] Some data

[Richard Barnes <[e-mail]>]

Hey all,

I've managed to extract histories for a collection of Webex Teams groups, a
total of 950 groups (including 1-1 conversations) ranging in size from 2 to
5000 members.

What data would people be interested in understanding from this data set?

I'm currently working on extracting "transcripts" of
init/add/remove/message events, with the idea that they could be fed into a
simulator attached to some library to generate counts of actual crypto
operations.  But it would also be easy to extract summary statistics, such
as the inter-arrival rates for Adds / Removes, Add:Remove ratios, etc.

One caveat is that Webex Teams allows self-add and self-remove, in addition
to adds/removes initiated by someone in the group.  Self-adds account for
~6% of all adds, but self-removes (leaves) are 98% of all removes.  The
latter might be an artifact of "server-initiated" removes being reflected
as self-removes, but of course server-initiated removes have similar issues
w.r.t. MLS.

--Richard