Oblivious Transfer is in MiniQCrypt

• URL: http://arxiv.org/abs/2011.14980v1
• Date: Mon, 30 Nov 2020 16:51:17 GMT
• Title: Oblivious Transfer is in MiniQCrypt
• Authors: Alex B. Grilo, Huijia Lin, Fang Song and Vinod Vaikuntanathan
• Abstract summary: MiniQCrypt is a world where quantum-secure one-way functions exist, and quantum communication is possible. We construct an oblivious transfer protocol in MiniQCrypt that achieves simulation-security in the plain model against malicious quantum-time adversaries.
• Score: 20.72168448608258
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: MiniQCrypt is a world where quantum-secure one-way functions exist, and quantum communication is possible. We construct an oblivious transfer (OT) protocol in MiniQCrypt that achieves simulation-security in the plain model against malicious quantum polynomial-time adversaries, building on the foundational work of Bennett, Brassard, Cr\'epeau and Skubiszewska (CRYPTO 1991). Combining the OT protocol with prior works, we obtain secure two-party and multi-party computation protocols also in MiniQCrypt. This is in contrast to the classical world, where it is widely believed that one-way functions alone do not give us OT. In the common random string model, we achieve a constant-round universally composable (UC) OT protocol.

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