BB84协议的非一般安全性分析与模拟  

Simulation and Perfect Security Analysis of BB84 Protocols

作　　者：彭永刚[1] 

机构地区：[1]南京邮电学院应用数理系 江苏南京210003

出　　处：《量子光学学报》2005年第4期156-160,共5页Journal of Quantum Optics

摘　　要：给出了窃听者采用各种窃听策略,使用最先进的仪器(段—郭概率量子克隆机)的条件下BB84协议的非一般安全性分析,推导出Eve使用段—郭概率量子克隆机时,Alice和Bob间的码差错率下降为20.7%,这说明BB84协议的安全性仍然有效。最后用BB84协议对量子密钥生成与分发进行了程序模拟。This paper shows perfect security analysis of BB84 protocol under four kinds of eavesdropping strategies. BB84 protocol has been proved to be unconditionally secure even using the Duan-guo probabilitic quantum cloning machine. It is shown that the quantum bit error rate which Alice and Bob estimated after sifted key reduces to 20.7 % in the Duan-Guo probabilitic cloning scheme. The quantum key distribution of BB84 protocol is simulated on the computer at the end of the paper.

关 键 词：BB84协议 量子密钥 量子不可克隆定理 段一郭概率量子克隆 

分 类 号：O431[机械工程—光学工程]