机构地区: 北京理工大学计算机科学工程系
出 处: 《计算机工程》 2002年第11期32-33,119,共3页
摘 要: 研究了群组通信中的密钥协商协议,首先用可变的底数来代替DH方案中的固定底数,改进了两方(Two-party)密钥协商协议PPK[5],然后把两方协议扩展成多方(Multi-party)协议,并且分析了所提出的两个协议对被动攻击和主动攻击的抵抗能力,最后给出了前者在抵抗联合攻击方面的不足。 Key agreement protocols used in group communication applications are studied. Firstly, the fixed base used in DH schemes is replaced with a changeable base, by which the two-party key agreement protocol PPK[5] is improved. Secondly, the two-party protocol is extended to a multi-party protocol. The security of the two protocols against passive attacks and active attacks is discussed. However, the multi-party protocol can not fight against collusive attacks.
关 键 词: 口令 可隐含认证 密钥协商协议 网络安全 计算机网络
领 域: [自动化与计算机技术] [自动化与计算机技术]