[andy]

CyanogenMOD zmienia się coraz bardziej w kierunku systemu DLA UŻYTKOWNIKA - magia Open Source! Po Privacy Guard przyszła pora na przesyłanie zaszyfrowanych wiadomości.
http://www.phonearena.com/news/Take-...-level_id44580

The PushSMS encryption is seamless and done at the system level, so popular 3rd party apps will benefit too - currently testing it with GoSMS, for instance. Thus, when the project is complete, two CM 10.1 phones will be able to exchange encrypted text messages that even the NSA's servers can't break down.

https://plus.google.com/+CyanogenMod/posts/23vfN2qdZTu

Anyways, TL;DR. I've built out a secure/push based messaging plugin for CyanogenMod. Messages between two CyanogenMod will be encrypted end to end and sent over GCM. It's built into the framework; so it works transparently, even with third party apps. (This is actually one of the cooler points IMO, and I do a lot of testing with GoSMS, etc)

It's basically PGP (encryption + authenticity) for text messages, built into the system.

There are two minor changes to the telephony and framework to support this:

Add Middleware hooks to IccSmsInterfaceManagerProxy. This allows a sent SMS message to be intercepted and rewritten or sent over another transport.
http://review.cyanogenmod.org/44464

Add other various framework support bits (new permissions). Grant system apps priority in case of ordered broadcast priority tie.
http://review.cyanogenmod.org/44545

Here's the source for the app/plugin, which is still under heavy development.
https://github.com/koush/PushSms

At this point, I'm looking to get some feedback, discussion, thoughts, etc on this project. Not ready for active testing yet.