[messaging] encryption of Signal notification messages

[Jason Strange]

There are options to limit the information displayed in notifications
(To "Name and message", "Name only", and "No name or message"), and if
you have a Signal passphrase set, whenever Signal is locked, the
notifications read as Locked Message. My Android is a little rusty, but
you can review the notification system here to learn more:

https://github.com/WhisperSystems/Signal-Android/tree/master/src/org/thoughtcrime/securesms/notifications

On 2/22/2016 11:02 AM, Tony Arcieri wrote:
> On Mon, Feb 22, 2016 at 10:21 AM, Ali Aydin Selcuk
> <aliaydinselcuk at gmail.com <mailto:aliaydinselcuk at gmail.com>> wrote:
>
>     Message contents are visible from the notification bar, which
>     should be transmitted over Google's or Apple's push notification
>     servers.
>
>     We just can't see how this is compatible with the end-to-end
>     encryption feature of Signal.
>
>     Are we missing something, or is there something fundamentally
>     wrong here?
>
>
> I do not work for or speak for OWS, but that said...
>
> When Signal first launched, the push notification handler just
> displayed "New Message". This is annoying from a UX standpoint.
>
> I believe they later added support for decrypting messages within
> Signal's push notification handler.
>
> I believe it's also an option you can toggle on and off (so as to e.g.
> prevent someone who steals your phone from seeing these messages)
>
> -- 
> Tony Arcieri
>
>
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