QKD系统在Breidbart基窃听下BB84协议的信息量研究

On the Breidbart Eavesdropping Information Problem of BB84 QKD Protocol

给出了BB84协议的Breidbart基窃听的方案,分析并计算了各种截取/重发策略下施行QKD标准纠错手续后Alice/Eve的有效平均交互信息量和对Bob引起的错误率.结果显示了Breidbart基窃听/Breidbart基重发策略(B/B策略)最为有效,并提出了各种窃听方案下Alice和Bob采取相应的反攻击策略.

The Breidbart eavesdropping scheme of BB84 QKD protocol discussed.Calculation of the effective average Alice/Eve mutual information after performing a standard error correction under various intercept/resend strategies shows that Breidbart eavesdropping/Breidbart(B/B strategy) is the most effective one.Since Alice and Bob can test openly whether there is the B/B eavesdropping by making use of the rejected data and advise Alice and Bob′s various corresponding anti eavesdropping scheme.