Quantum Cryptography - successfully put to work for electric grid security

Wide area protection and control applications impose requirements for fast and trustworthy data communications.
Recently a Los Alamos National Laboratory (LANL) quantum cryptography (QC) team successfully completed the first-ever demonstration of securing control data for electric grids using quantum cryptography. In QC single photons are used to produce secure random numbers between users, and these random numbers are then used to authenticate and encrypt the grid 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.

A late-2012 demonstration showed that quantum cryptography provides the necessary strong security assurances with latencies (typically 250 microseconds, including 120 microseconds to traverse the 25 kilometers of optical fiber connecting the two nodes) that are at least two orders of magnitude smaller than requirements.
For more information please visit: www.lanl.gov/science/centers/quantum/cryptography.shtml





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