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Topic: Quantum cryptography

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 Quantum cryptography - Wikipedia, the free encyclopedia   (Site not responding. Last check: 2007-11-06)
Quantum cryptography is an approach based on quantum physics for secure communications.
Unlike traditional cryptography, which employs various mathematical techniques to restrict eavesdroppers from learning the contents of encrypted messages, quantum cryptography is based on the physics of information.
Quantum cryptography is still vulnerable to a type of MITM where the interceptor (Eve) establishes herself as "Alice" to Bob, and as "Bob" to Alice.
www.sciencedaily.com /encyclopedia/quantum_cryptography   (2089 words)

 Quantum cryptography Info - Encyclopedia WikiWhat.com   (Site not responding. Last check: 2007-11-06)
The first is quantum key exchange, the second is the effect of quantum computing on cryptanalysis.
The roots of quantum cryptography are in a proposal by Stephen Weisner called "Conjugate Coding" from the early 1970s.
They produced "BB84" the first quantum key exchenge protocol, in 1984, but it was not until 1991 that the first experimental prototype based on this protocol was made operable (over a distance of 32 centimeters).
www.wikiwhat.com /encyclopedia/q/qu/quantum_cryptography.html   (1895 words)

 Seespyware   (Site not responding. Last check: 2007-11-06)
Quantum cryptography has marched from theory to laboratory to real products: "At the IBM Thomas J. Watson Research Laboratory, Charles Bennett is known as a brilliant theoretician--one of the fathers of the emerging field of quantum...
Quantum cryptography could well be the first application of quantum mechanics at the individual quanta level.
Quantum cryptography is an effort to allow two users of a common communication channel to create a body of shared and secret information.
www.seespyware.com /quantum-cryptography.html   (1281 words)

 Encyclopedia of Laser Physics and Technology - quantum cryptography, secret, key distribution, eavesdropping, ...
It usually involves quantum key distribution, i.e., a system for key distribution which exploits quantum mechanics to prohibit with perfect security that anyone can intercept or break the used secret key.
Several schemes for quantum cryptography have been experimentally demonstrated, and there are nowadays even commercial versions.
Such kind of risks are carefully studied and minimized or eliminated by further refinements of quantum cryptography.
www.rp-photonics.com /quantum_cryptography.html   (656 words)

 EU seeks quantum cryptography response to Echelon
The European Union is to invest €11 million ($13 million) over the next four years to develop a secure communication system based on quantum cryptography, using physical laws governing the universe on the smallest scale to create and distribute unbreakable encryption keys, project coordinators said Monday.
Quantum cryptography takes advantage of the physical properties of light particles, known as photons, to create and transmit binary messages.
The new system, known as SECOQC (Secure Communication based on Quantum Cryptography), is intended for use by the secure generation and exchange of encryption keys, rather than for the actual exchange of data, Monyk said.
www.networkworld.com /news/2004/0517euseeks.html   (973 words)

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