计算机应用与软件2024，Vol.41Issue(12)：341-345,389,6.DOI:10.3969/j.issn.1000-386x.2024.12.047
一种改进的LCA密钥生成方法研究
AN IMPROVED LCA KEY GENERATION METHOD
摘要
Abstract
In the LCA(level-crossing algorithm),deleting a large number of channel characteristic sequences causes a waste of resources,and at the same time the key generation rate is low.Therefore,a new improved method based on LCA is proposed.The algorithm's performance was improved by preprocessing.An m-length window was added to the obtained position index set,and matching search and threshold judgment were performed on the sequence range retained after windowing.The maximum and minimum values were parsed to obtain circular decision to generate key bits.The simulation experiment results show that the key inconsistency rate of the improved algorithm is even slightly better than that of the LCA algorithm at high signal-to-noise ratio,and the key generation efficiency KGE is increased by about 4 times,which has a significant advantage in key length.关键词
物理层密钥/无线信道特征/密钥生成Key words
Physical layer key/Wireless communication security/Key generation分类
信息技术与安全科学引用本文复制引用
张泳翔,吴游..一种改进的LCA密钥生成方法研究[J].计算机应用与软件,2024,41(12):341-345,389,6.基金项目
国家自然科学基金项目(52071164). （52071164）
