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Quantum cryptographic three party protocols

J. Mueller-Quade·H. Imai
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Abstract

Due to the impossibility results of Mayers and Lo/Chau it is generally thought that a quantum channel is cryptographically strictly weaker than oblivious transfer. In this paper we prove that in a three party scenario a quantum channel can be strictly stronger than oblivious transfer. With the protocol introduced in this paper we can completely classify the cryptographic strength of quantum multi party protocols.

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J. Mueller-Quade, H. Imai. 2000-10-31. Quantum cryptographic three party protocols. https://arxiv.org/abs/quant-ph/0010111

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