独立网络中新的双方密钥协商协议

摘要

现有的密钥协商协议大多研究同一密钥生成中心(KGC)下的安全会话,即参与者的参数都由同一KGC提供.为了实现处于不同KGC中的参与者的安全会话,采用椭圆曲线设计方案提出了一种新的基于身份的双方认证密钥协商协议,新协议实现了两个具有独立参数的KGC中参与者的安全密钥协商.还利用改进的Blake-Wilson模型对新协议的安全性进行了严格的形式化证明.通过分析表明该新协议不但具有足够的安全性,而且还具备计算量小、效率高的特点,因而,可用于对能耗要求高的轻量级设备中.%There is much research about key agreement focus on the secure communication in the same Key Generation Center (KGC), i. e. all the parameters of different participants should be provided by one KGC. To realize the secure communication between two users in different KGCs, adopting elliptic curve cryptography algorithm, a new two-party ID-based key agreement protocol was proposed. This new scheme realized key agreement protocol in separate networks between two participants. Then the improved Blake-Wilson model was used to prove the security of the scheme. After being analyzed, the new protocol was proved to be secure, efficient and of lower computational cost. Therefore, the new scheme will be compatible with low-power and lightweight devices.