Abstract

Quantum cryptography systems are open systems; therefore, they can be subjected to active sensing, and the components of the receiving and transmitting equipment can be driven to abnormal operation, which, as experimentally demonstrated, may discredit the security of the system. The development of systems that guarantee the detection of such attacks and the secrecy of the transmitted keys at the level of physical principles, rather than at the level of individual technical solutions, is a topical problem. The paper proposes a simple and physically intuitive principle of protection against an active sensing attack—a detector mismatch attack—which requires only minimal changes in the existing systems that use the quantum distribution protocol BB84.

中文翻译：

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一种防止量子密码术中检测器不匹配攻击的简单方法：BB84协议

摘要

量子密码系统是开放系统。因此，它们可能会受到主动感应，并且接收和发送设备的组件可能会被驱动进行异常操作，如实验所示，这可能会使系统的安全性受损。在物理原理层面上而不是在单个技术解决方案层面上，确保检测到这种攻击和所传输密钥的保密性的系统的开发是一个热门问题。本文提出了一种简单而直观的保护原理，以防止主动感应攻击（检测器失配攻击），该方法只需要对使用量子分配协议BB84的现有系统进行最小的更改。