无线移动自组网混合式密钥管理方案研究

基于门限机制的密钥管理方案能提供高的安全性,但认证成功率较低,可扩展性差;基于证书链的密钥管理方案适合自组网的特点,但其安全性仅取决于证书链中节点的信任度,不能满足高安全要求的应用环境。该文提出了门限机制和证书链信任值方法相结合的混合式密钥管理和认证方案,在增加少量通信量的情况下,方案提高了自组网的认证成功率和系统的安全性,较好地平衡了自组网的安全性和认证成功率,满足自组网应用的安全要求。

A New Hybrid Key Management Scheme for Ad hoc Networks

Key management schemes based on threshold mechanism can provide high security, but lower certificate success rate and bad scalability; key management schemes based on certification chain satisfy self-organized features, but their security depends on trust degree of nodes and could not be applied high security environment. We advance hybrid key management scheme based on threshold mechanism and certification chain. Simulation shows that with less increment of communication overhead, our scheme can improve both certificate success rate and system security and better balances security and availability, and satisfies security needs of Ad hoc networks.