波动误差量化辅助的改进Cascade协议
2025,47(1):158-167
周壮
国防科技大学 电子科学学院, 湖南 长沙 410073
骆俊杉
国防科技大学 电子科学学院, 湖南 长沙 410073
谢顺钦
中国工程物理研究院 电子工程研究所, 四川 绵阳 621999
陈宇豪
国防科技大学 电子科学学院, 湖南 长沙 410073
王世练
国防科技大学 电子科学学院, 湖南 长沙 410073
国防科技大学 电子科学学院, 湖南 长沙 410073
骆俊杉
国防科技大学 电子科学学院, 湖南 长沙 410073
谢顺钦
中国工程物理研究院 电子工程研究所, 四川 绵阳 621999
陈宇豪
国防科技大学 电子科学学院, 湖南 长沙 410073
王世练
国防科技大学 电子科学学院, 湖南 长沙 410073
摘要：
针对经典的Cascade协议协商效率低、容易造成密钥泄露的问题，提出波动误差量化辅助的改进Cascade协议。在信息协商之前，分析合法节点的信道幅度特征波动差异的统计特征，利用统计特性提出了一种波动误差量化方法。基于所提量化方法，采用奇偶分组和分块协商的方式设计了一种改进的Cascade协议。仿真结果表明，所提改进Cascade协议以牺牲部分的协商成功率为代价有效提升了协商协议的协商效率，降低了信息协商所需的计算复杂度和密钥信息泄露的可能性。此外，与现有密钥生成方案相比，基于所提改进的Cascade协议的密钥生成方案具有较低的密钥不一致率和较高的密钥生成速率。
针对经典的Cascade协议协商效率低、容易造成密钥泄露的问题，提出波动误差量化辅助的改进Cascade协议。在信息协商之前，分析合法节点的信道幅度特征波动差异的统计特征，利用统计特性提出了一种波动误差量化方法。基于所提量化方法，采用奇偶分组和分块协商的方式设计了一种改进的Cascade协议。仿真结果表明，所提改进Cascade协议以牺牲部分的协商成功率为代价有效提升了协商协议的协商效率，降低了信息协商所需的计算复杂度和密钥信息泄露的可能性。此外，与现有密钥生成方案相比，基于所提改进的Cascade协议的密钥生成方案具有较低的密钥不一致率和较高的密钥生成速率。
基金项目：
国家自然科学基金资助项目（62171445, 62201590）
国家自然科学基金资助项目（62171445, 62201590）
Fluctuation error quantization aided improved Cascade protocol
ZHOU Zhuang
College of Electronic Science and Technology, National University of Defense Technology, Changsha 410073 , China
LUO Junshan
College of Electronic Science and Technology, National University of Defense Technology, Changsha 410073 , China
XIE Shunqin
Institute of Electronic Engineering, China Academy of Engineering Physics, Mianyang 621999 , China
CHEN Yuhao
College of Electronic Science and Technology, National University of Defense Technology, Changsha 410073 , China
WANG Shilian
College of Electronic Science and Technology, National University of Defense Technology, Changsha 410073 , China
College of Electronic Science and Technology, National University of Defense Technology, Changsha 410073 , China
LUO Junshan
College of Electronic Science and Technology, National University of Defense Technology, Changsha 410073 , China
XIE Shunqin
Institute of Electronic Engineering, China Academy of Engineering Physics, Mianyang 621999 , China
CHEN Yuhao
College of Electronic Science and Technology, National University of Defense Technology, Changsha 410073 , China
WANG Shilian
College of Electronic Science and Technology, National University of Defense Technology, Changsha 410073 , China
Abstract：
Aiming at the problems of low reconciliation efficiency and key leakage of the classical Cascade protocol, an improved Cascade protocol aided by fluctuation error quantization was proposed. Before reconciliation, the statistical characteristics of the fluctuation difference of channel magnitude feature of legitimate nodes were studied and a fluctuation error quantization method was proposed by using it. Based on the proposed quantization method, an improved Cascade protocol was designed by parity grouping and partitioning reconciliation. Numerical results demonstrate that the proposed improved Cascade protocol effectively improve the reconciliation efficiency, reduces the computational complexity required for information reconciliation and the possibility of key information leakage at the cost of partial reconciliation success rate. In addition, compared with the existing key generation schemes, the key generation scheme based on the proposed improved Cascade protocol has a lower key inconsistency rate and a higher key generation rate.
Aiming at the problems of low reconciliation efficiency and key leakage of the classical Cascade protocol, an improved Cascade protocol aided by fluctuation error quantization was proposed. Before reconciliation, the statistical characteristics of the fluctuation difference of channel magnitude feature of legitimate nodes were studied and a fluctuation error quantization method was proposed by using it. Based on the proposed quantization method, an improved Cascade protocol was designed by parity grouping and partitioning reconciliation. Numerical results demonstrate that the proposed improved Cascade protocol effectively improve the reconciliation efficiency, reduces the computational complexity required for information reconciliation and the possibility of key information leakage at the cost of partial reconciliation success rate. In addition, compared with the existing key generation schemes, the key generation scheme based on the proposed improved Cascade protocol has a lower key inconsistency rate and a higher key generation rate.
收稿日期：
2023-08-22
2023-08-22
