arXiv:quant-ph/0003004quant-ph
Simple Proof of Security of the BB84 Quantum Key Distribution Protocol
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Abstract
We prove the security of the 1984 protocol of Bennett and Brassard (BB84) for quantum key distribution. 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. The entanglement-purification based protocol uses Calderbank-Shor-Steane (CSS) codes, and properties of these codes are used to remove the use of quantum computation from the Lo-Chau protocol.
This story was posted to Hacker News in May: https://news.ycombinator.com/item?id=5661576 http://arxiv.org/abs/1305.0305?utm_source=feedly Read the arXiv paper: it's quite short and not very technical. The BB84 protocol used is described in a lower comment by 'harshreality. It…
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