Stroh L, Peat JT, Kroneberg M, Puthoor IV, Andersson E.
Submitted to arXiv on 7 May 2024
Oblivious transfer between two untrusting parties is an important primitive in cryptography. There are different variants of oblivious transfer. In Rabin oblivious transfer, the sender Alice holds a bit, and the receiver Bob either obtains the bit, or obtains no information with probability p?. Alice should not know whether or not Bob obtained the bit. We examine a quantum Rabin oblivious transfer protocol that uses two pure states. Investigating different cheating scenarios for the sender and for the receiver, we determine optimal cheating probabilities in each case. Comparing the quantum Rabin oblivious transfer protocol to classical Rabin oblivious transfer protocols, we show that the quantum protocol outperforms classical protocols which do not use a third party, for some values of p?.
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