[messaging] encryption of Signal notification messages

Ali Aydin Selcuk aliaydinselcuk at gmail.com
Mon Feb 22 10:21:17 PST 2016

Dear all,

My colleague Halil Taskin noticed a feature of Signal which wasn't there in

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?



ps. BTW, the question applies to how Whatsapp uses TextSecure too.

Ali Aydın Selçuk
Dept. of Computer Engineering
06560, Ankara, Turkey
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