||This article needs additional citations for verification. (March 2008)
PowerVu is a conditional access system for digital television developed by Scientific Atlanta. It is used for professional broadcasting, notably by Retevision, Bloomberg Television, Discovery Channel, AFRTS and American Forces Network. It is also used by cable companies to prevent viewing by unauthorized viewers.
PowerVu has decoders that decode signals from certain satellites for cable distribution services. These decoders can also be used just like the FTA (Free-To-Air) satellite receivers if properly configured. PowerVu was considered very secure since it uses a complicated system to authorize each PowerVu receiver and trace its history of ownership and usage. Most PowerVu users are professional cable or satellite companies, using the service and equipment for signal redistribution, because regular users cannot afford it.
On March 10, 2010 the hacker called "Colibri" published after previous work done in 2005 a cryptanalysis of a PowerVU system implementation, describing a flawed design that can be used to gain access to the encryption keys and ultimately decryption of the transmitted content.
- ^ "PowerVu Network Centre Introduction". Cisco Systems. Retrieved 2010-03-03.
- ^ Colibri. "PowerVu". Retrieved 2010-06-03.
- ^ Colibri (2010-03-10). "Kryptoanalyse PowerVu TV-Verschluesselung" [Cryptanalysis of PowerVU television broadcast encryption] (pdf) (in German).