Software organisation Open Whisper Systems recently updated its encrypted instant messaging and voice calling app Signal with a new encrypted video calling feature. Previously, the app only offered fully encrypted chat and voice calling, however, now users can even enjoy end-to-end encrypted video-calling.
“Real-time encryption is almost more straight forward in some ways,” explains Moxie Marlinspike, founder of Open Whispers Systems. “A call is synchronous communication that’s somewhat ephemeral which makes cryptography easier.”
The app essentially requires users to input their mobile numbers for verification. The number does not have to be the same as on the device’s SIM card; it can also be a VoIP number or a landline number as long as the user can receive the verification code and have a separate device to set up the software. The chatting-app can be used by anyone who wishes to communicate safely and securely.
The Internet Society published a user study in July last year wherein they assessed the ability of Signal users to detect and deter man-in-the-middle attacks. The study concluded that 21 out of 28 participants failed to correctly compare public key fingerprints in order to verify the identity of other Signal users.
Apart from the video calling feature, iOS 10 users will also be able to answer calls directly from their lock screen.
