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arXiv:1210.5681 · The European Physical Journal D

Can relativistic bit commitment lead to secure quantum oblivious transfer?

Guang Ping He

Published Mar 31, 2015• 7 citations
arXivHTMLPDF
DOI
10.1140/epjd/e2015-50882-4

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Constructing oblivious transfer and bit commitment protocols based on chan-nel’s quantum nature to achieve statistical security has always been a basic aspect of quantum cryptography. Here we put forward a scheme to reach this goal. The idea is constructing first a random oblivious transfer (R-OT, an ex-tension of Rabin’s OT) protocol based on non-orthogonal states transmission over a quantum channel, then, as that usually do in modern cryptography, we construct a one-out-of-two oblivious transfer protocol on top of the R-OT protocol. Finally, we present a bit commitment protocol based on the one-out-of-two OT protocol, and show that it is statistically secure both in concealing and binding.