基于无线信道密钥生成的群组通信密钥共享方法  

Group Communication Key Sharing Method Based on Wireless Channel Key Generation

作　　者：王坚[1] 黄普善 金东方[1] 吴晋成 何远杭[1] WANG Jian;HUANG Pushan;JIN Dongfang;WU Jincheng;HE Yuanhang(No.30 Institute of CETC,Chengdu Sichuan 610041,China)

机构地区：[1]中国电子科技集团公司第三十研究所,四川成都610041

出　　处：《通信技术》2024年第12期1291-1296,共6页Communications Technology

基　　金：国家自然科学基金(U21B2019)。

摘　　要：无线信道密钥生成利用了通信信道在合法通信双方间具有互易性,而与窃听者间互易性差的特性,不需要预先共享秘密,不需要复杂的密钥协商与分发就可以安全地在合法通信双方间建立密钥共享。在已有的将信息调和转化为信息纠错的方法基础上,将无线信道密钥生成与会话密钥分发结合,通过引入预制共享密钥,并以具有误码扩散特性的加密模式,对会话密钥进行加密,实质上就是通过误码扩散实现了隐私放大,这不但提高了原方法的安全保密能力,还同时支持群组安全通信。Wireless channel key generation,based on the property that communication channels are reciprocal between legitimate communicating parties and less reciprocal between eavesdroppers,does not require pre-shared secrets or complex key negotiation and distribution to securely establish key sharing between legitimate communicating parties.On the basis of the existing method of transforming information reconciliation into information error correction,this paper combines wireless channel key generation with session key distribution by introducing a pre-shared key and encrypting the session key with an encryption mode that has the characteristic of BER diffusion,which in essence achieves privacy amplification through BER diffusion.This not only improves the security and confidentiality of the original method,but also supports group secure communication.

关 键 词：无线信道 密钥 纠错 群组 通信 共享 

分 类 号：TP309.7[自动化与计算机技术—计算机系统结构]