On Mon, Aug 22, 2016 at 07:48:33PM -0700, Tony Arcieri wrote:
As far as an ECC-based approach goes, I think something like the multiparty Signal protocol[1] is a good starting point for how to solve the general
[snip]
[1] I'm not sure there's a more recent overview than this, which is probably out-of-date: https://whispersystems.org/blog/private-groups/
Based on a bit of experimenting with the various language implementations of libsignal, I'm pretty sure Signal group messages don't do the encrypt-to-each-recipient thing anymore. But I haven't tried to interoperate with or even study the mainline client, so it's possible I'm missing something.
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