[messaging] encryption of Signal notification messages

[Daniel Kahn Gillmor]

On Mon 2016-02-22 21:11:18 -0500, Tony Arcieri wrote:
> All that said: the sender can potentially provide a flag as to whether or
> not they would prefer a plaintext decrypt be displayed. This can't be
> enforced by cryptography, but Signal could attempt to honor such a flag.

This is an interesting proposal, but i think it gets into a slew of
stickier issues.  For example, should Signal expose/attempt to honor a
similar advisory flag with "this message will self destruct in N
minutes" semantics?

I don't actually think this would be a bad thing, but i don't know how
to provide realistic and clear user messaging around such a feature.

     --dkg