Researchers exploit vulnerabilities in the implementation of the GMR-2 cipher that could be exploited to decrypt satellite phone communications in fractions of a second. Researchers devised a technique that for the first time allows a real-time inversion attack using one frame keystream. The attack is carried out on a 3.3GHz platform, and the experimental results demonstrate that the 64-bit encryption-key could be recovered in around 0.02s on average. Given one frame (15 bytes) of keystream, one”]
Source: http://securityaffairs.co/wordpress/60810/hacking/gmr-2-attacks-mobile-communications.html