Rejoice, O lovers of privacy! For Open WhisperSystems has released Signal for iPhone, which gives any and every iPhone wielder the power to fully encrypt their calls against prying ears — and is completely compatible with OWS’s time-tested and well-liked RedPhone for Android.
Under the hood, Signal uses push notifications to initiate calls, Amazon Web Services to route the data, and the ZRTP protocol, developed by Phil Zimmerman, to encrypt conversations end-to-end. You don’t need a new password or a new number; it’s built to Just WorkTM. Oh, and your call’s metadata is protected/discarded as well.
The code is open-source and has an interesting contributor funding model, too; every merged pull request is rewarded with some of the Bitcoin donated to the project as a whole. Continue>>>