We propose postquantum universal composable (UC) cut-and-choose oblivious transfer (CCOT) protocol under the malicious adversary model. In secure two-party computation, we construct copies’ garbled circuits, including half check circuit and half evaluation circuit. The sender can transfer the key to the receiver by CCOT protocol. Compared to PVW-OT [6] framework, we invoke WQ-OT [35] framework with reusability of common random string () and better security. Relying on LWE’s assumption and the property of the Rounding function, we construct an UC-CCOT protocol, which can resist quantum attack in secure two-party computation.

中文翻译：

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基于 LWE 的后量子选择不经意传输协议

我们提出了恶意对手模型下的后量子通用可组合（UC）剪切和选择不经意传输（CCOT）协议。在安全的两方计算中，我们构建了副本的乱码电路，包括半校验电路和半评估电路。发送方可以通过 CCOT 协议将密钥传输给接收方。与 PVW-OT [6] 框架相比，我们调用了 WQ-OT [35] 框架，具有公共随机字符串 ( ) 的可重用性和更好的安全性。依靠LWE的假设和舍入函数的性质，我们构建了一个UC-CCOT协议，可以在安全的两方计算中抵抗量子攻击。