Widoczny [Schowaj] Abstrakt. V, Cavin R. F, Qi B. Telekomunikacja kwantowa.

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Recently a Los Alamos National Laboratory quantum cryptography QC team successfully completed the first-ever demonstration of securing control data for electric grids using quantum cryptography.

Novel methods for controlling the electric grid are needed to accommodate new energy sources such as renewables whose availability can fluctuate on short time scales. This requires transmission of data to and from control centers; but for grid-control use, data must be both trustworthy and delivered without delays. The simultaneous requirements of strong authentication and low latency are difficult to meet with standard cryptographic techniques.

New technologies that further strengthen existing cybersecurity protections are needed. Quantum cryptography provides a means of detecting and defeating an adversary who might try to intercept or attack the communications. Single photons are used to produce secure random numbers between users, and these random numbers are then used to authenticate and encrypt the grid control data and commands.

Because the random numbers are produced securely, they act as cryptographic key material for data authentication and encryption algorithms. At the heart of the quantum-secured communications system is a unique, miniaturized QC transmitter invention, known as a QKarD, that is five orders of magnitude smaller than any competing QC device.

Jane Nordholt, the Los Alamos principal investigator, put it this way: "This project shows that quantum cryptography is compatible with electric-grid control communications, providing strong security assurances rooted in the laws of physics, without introducing excessive delays in data delivery. A late demonstration at UIUC showed that quantum cryptography provides the necessary strong security assurances with latencies typically microseconds, including microseconds to traverse the 25 kilometers of optical fiber connecting the two nodes that are at least two orders of magnitude smaller than requirements.

Further, the team's quantum-secured communications system demonstrated that this capability could be deployed with only a single optical fiber to carry the quantum, single-photon communications signals; data packets; and commands. The TCIPG cyber-physical test bed provides a realistic environment to explore cutting-edge research and prove emerging smart grid technology in a fully customizable environment.

In this demonstration, high-fidelity power simulation was leveraged using the real-time digital simulator to enable hardware in the loop power simulation to drive real phasor measurement units PMUs , devices, deployed on today's electric grid that monitor its operation.

The power simulation was running a well-known power-bus model that was perturbed by introducing faults, which drove the analog inputs on the connected hardware PMU. A phasor data concentrator then collected and visualized the data. Note: Content may be edited for style and length. Science News. ScienceDaily, 14 February Quantum cryptography put to work for electric grid security. Retrieved May 26, from www. Electrons can serve as quantum bits, the smallest unit of quantum New research demonstrates a new way to pack a lot more quantum computing power into a much smaller space and with much greater control than ever They found that energy-time entanglement -- the method that Below are relevant articles that may interest you.

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Kryptologia kwantowa - praktycznie niewykrywalna metoda kodowania

Skip to search form Skip to main content You are currently offline. Some features of the site may not work correctly. DOI: Quantum cryptography, a field of science that had not been known before, developed rapidly in the late 20th century. It originated from a combination of quantum mechanics and information technology. The present paper presents the possibilities of using quantum mechanics in cryptography and considers whether there are any practical solutions to the important class of problems regarding the security of transmitted information. View PDF.





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