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Comment on "Quantum Key Distribution with Classical Bob'' Reply

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Marco Grioni, Daniela Pacilè
2009
journal articles

Abstract

A Reply to the Comment by Hae-Kyung Jeong et al.

Official source

https://infoscience.epfl.ch/entities/publication/39a2a552-336b-4ae9-8666-9ab133b48e6e

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Quantum key distribution (QKD) is a secure communication method that implements a cryptographic protocol involving components of quantum mechanics. It enables two parties to produce a shared random secret key known only to them, which then can be used to encrypt and decrypt messages. The process of quantum key distribution is not to be confused with quantum cryptography, as it is the best-known example of a quantum-cryptographic task.

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Quantum cryptography is the science of exploiting quantum mechanical properties to perform cryptographic tasks. The best known example of quantum cryptography is quantum key distribution which offers an information-theoretically secure solution to the key exchange problem. The advantage of quantum cryptography lies in the fact that it allows the completion of various cryptographic tasks that are proven or conjectured to be impossible using only classical (i.e. non-quantum) communication.

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