适用于混沌密钥分发的新误码协调方法

A novel error reconciliation method fit for chaotic key distribution

对于现有的密钥分发中的误码协调方法的复杂性和多次传输的问题,使用倒三角类坐标定位法来解决.将所得裸钥放置于下三角矩阵中,三边分别进行奇偶比较并互相传输计算结果,以达到定位错误比特位的目的.使用互注入光反馈激光器产生相关性高的混沌态来提取裸钥,通过该协调方法,最终可以达到10^-8～10^-10量级的误码率.通过该方法可以简单、有效地删除裸钥中的误码,满足现实通信对误码率的容忍度.

The complexity and multiple transmission are big problem in recent error reconciliation.The error reconciliation invert-ed triangle coordinate positioning is proposed to overcome these difficulties.The raw-key is put in a lower matrix model to calcu-late in binary search along three sides.The calculated keys are mutual transformed in public channel.The error bits are pointed out by comparing the public keys.Two mutual injection optical feedback lasers are used for reaching the high correlation chaotic state,then the raw-key is distilled.The secret key EBR reaches 10-8-10-10 .Moreover,the error bit could be deleted simply and effectively to satisfy the EBR tolerance in practice.