Wednesday, 26 May 2010

Encrypted SMS and voice calls for Android phones

People using Android-powered mobile phones can now get encrypted SMS and voice calls. WhisperSystems ( has two apps in beta, available in the Android store.

TextSecure allows you to encrypt your SMS messages and stores all your SMS messages in an encrypted database. It works as a drop-in replacement for your existing Android SMS app.
They've also created RedPhone, an app that provides end-to-end encrypted voice communication. This app has a few neat features: it's difficult for snoopers to work out who you're calling (they'd need to be able to monitor a massive amount of network traffic), your calls go via Wifi or 3G and not your cellular plan (great if your cellular network provider is unreliable) and the apps are going to be open sourced (so you can be sure there's no backdoor).

There are both great apps for people concerned about their privacy or the security of the channels they're communicating over. Worried that your phone provider won't keep the contents of your SMS messages secure or that someone might be snooping on your calls? These two apps will give you some peace of mind. US-only, but coming for international Android phone users soon.

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