Simple proof of security of the BB84 quantum key distribution protocol

Abstract

We prove that the 1984 protocol of Bennett and Brassard (BB84) for quantum key distribution is secure. We first give a key distribution protocol based on entanglement purification, which can be proven secure using methods from Lo and Chau's proof of security for a similar protocol. We then show that the security of this protocol implies the security of BB84… (More)

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@article{Shor2000SimplePO, title={Simple proof of security of the BB84 quantum key distribution protocol}, author={Shor and Preskill}, journal={Physical review letters}, year={2000}, volume={85 2}, pages={441-4} }