Quantum Cryptography
Cryptography is traditionally a very conservative branch of information technology. It relies on proven technologies and does its best to resist change. A big new topic in recent years has been quantum cryptography. Quantum cryptography is based on quantum mechanics, principally superposition and entanglement. A discussion of quantum mechanics is out of the scope of this text, but the principle we are most concerned with in regard to cryptography is that in quantum mechanics, the measuring of data disturbs the data. What this means to cryptographers is that it is easy to tell if a message has been eavesdropped on in transit. This allows people to exchange key data while knowing that the data was not intercepted in transit. ...
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