量子Rabin不经意传输中的混合态
Mixed States in Quantum Rabin Oblivious Transfer
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中文总结 AI 辅助
本文研究混合量子态在Rabin不经意传输中的应用，提出三种混合态协议，通过扩展纯态方案和概率方法，在不同参数下实现优于经典和量子纯态协议的性能。
中文摘要 AI 辅助
不经意传输（OT）是一种基础密码学原语，可用于实现任意两方计算。由于在经典和量子条件下，信息论安全的完美OT均不可能实现，研究聚焦于非完美协议，探索在对抗无界不诚实方时能达到多接近完美的程度。当前方法常使用纯量子态，但近期工作表明混合量子态可能提升性能。本文研究混合量子态在Rabin不经意传输中的应用，其中发送方持有一位比特，接收方以一定概率获知其值，而发送方不知晓接收方是否获知。我们通过两种不同方法构造了三个混合态协议，扩展了现有纯态方案并采用概率方法，并展示了在不同参数下相较于经典和量子纯态协议的性能提升。
英文摘要
Oblivious transfer (OT) is a fundamental cryptographic primitive that is useful for realizing any two-party computation. Since information-theoretically secure perfect OT is impossible classically and quantumly, research has focused on imperfect protocols, exploring how close to perfect one can get against unbounded dishonest parties. While current approaches often make use of pure quantum states, recent work suggests that mixed quantum states may improve performance. In this paper, we investigate the use of mixed quantum states in Rabin oblivious transfer, where a sender holds one bit and a receiver learns its value with a certain probability while the sender remains ignorant of whether the receiver learned it. We present three mixed-state protocols constructed with two distinct methods, extending an existing pure-state scheme and employing a probabilistic approach, and demonstrate improved performance compared to classical and quantum pure-state protocols across varying parameters.
发表机构
- Heriot-Watt University（赫瑞-瓦特大学）
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