Wednesday, June 26, 2013

1306.5863 (Li Yang)

Bit commitment protocol based on random oblivious transfer via quantum

Li Yang
Constructing oblivious transfer and bit commitment protocols based on channel'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) 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.
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