A quantum -based encryption network was tested in Hungary – Blikk

• Quantum -based solutions can provide protection against IT security threats
• The first multi -node, key -free quantum key test network has been built in Hungary
• The procedure provides physically guaranteed security when transmitting the key used for encryption
• The network consists of 3 layers in which keys are shared and encrypted between participating nodes
• They also gathered experience on operating assets and the use of keys shared in quantum communication with traditional encryption tools

This was first demonstrated by a unique research and industrial cooperation. During the cooperation, Advanet Hungary, Budapest University of Technology and EconomicsMagyar Telekom and Netvisor experts have built Hungary’s first multi -node, key -free quantum key test network.

The threat of quantum computers

THE quantum computers Its rapid development fundamentally threatens the safety of current encryption systems, so it is extremely important to prepare in time. QKD is currently one of the most promising answers to this challenge as it is physically guaranteed in security It provides when transferring the key used for encryption.

On April 22, the BME Faculty of Electrical Engineering and Information Technology introduced the first successful domestic demonstration background. « In recent years, many domestic results have been achieved in quantum communication, and more and more quantum communication attempts are underway. It is a great step forward that the first multi -node quantum -based encryption network has been achieved in Hungary with the help of commercially available tools. – said Sándor Imre, Dean of the Faculty.

If you care a little deeper about what happens in such a system, it is definitely worth knowing that the 3 points of the network are located in the quantum communication lab in BME I, in the Budapest-Kelenföld Telecommunication Room, and in Székesfehérvár. The essence of the experiment is to share a key through multiple nodes using quantum communication, where this key is used to encrypt traditional telecommunications.

Three -layer network

The network consists of 3 layers. On the lower layer, Toshiba quantum keystroke devices share 1-1 keys on the BME-Kelenföld and Kelenföld-Székesfehérvár sections. The servers on the middle layer perform the key management, which allows you to encrypt between the two extreme nodes. The upper layer has a 1-1 classic WDM (wavelength-sharing optical transmission) telecommunication device in the Laboration of Székesfehérvár and BME, which can encrypt any communication between the QKD servers there- find out from BME’s news page.

For the first time, the quantum key division used as a point-to-point solution was first tried in a multi-node network at home, experiencing the key management functions of a real QKD network, gathering experience on the operation of tools and the use of keys shared with quantum communication. Since the long -term limits of quantum communication with nearly 1 photon are relatively low, it can also be eliminated with network connection and key management.

That is, if cybercriminals got a quantum computer, they would not have access to information, because the QKD system is even inseparable even with this high-tech.