Quantum cryptography tackles video
Toshiba Research Europe has used the science of quantum cryptography to transmit voice and video over a secure fiber link that is protected by the laws of physics. The demonstration is significant because it shows that the single-photon encryption technology is not only compatible with real Internet Protocol (IP) traffic but also robust enough for deployment on commercial fiber networks. The system was shown to financial institutions and government representatives in London last week by scientists working at Toshiba’s Cambridge Research Laboratory. Toshiba’s “Quantum Key Server” can generate up to 100 quantum (single-photon) keys per second, enough to encrypt each video frame with a separate key. In addition, it features an automatic management system that continually monitors and adjusts the system’s optical path length to allow it to operate continuously without any need for user intervention.
