All information-theoretically secure key establishing protocols are quantum protocols

Details All information-theoretically secure key establishing protocols are quantum protocols All information-theoretically secure key establishing protocols are quantum protocols

2003-09-19

arxiv.org/abs/quant-ph/0309145v4

Physics

Quantum Physics

4 pages, 2 Postscript figures

Scientific paper

A theorem is proved which states that no classical key generating protocol
could ever be provably secure. Consequently, candidates for provably secure
protocols must rely on some quantum effect. Theorem relies on the fact that
BB84 Quantum key distribution protocol has been proven secure.

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