A Security Scheme for Power Dispatching Data Network Based on VPN
Wu Ai · Dianli xitong zidonghua · 2007
Based on an analysis of the current security scheme for public key infrastructure and certification authorities (PKI/CA) in the power dispatching data network and focusing on the contradiction between real time and security, a novel security scheme for identity authentication and key agreement is proposed. By improving the digital signature and key agreement algorithm based on discrete logarithm in a finite field, the identity authentication and key agreement are merged into one session, and the security scheme is made independent of the third party on-line certificate system. Meanwhile, the redundant functions of the current virtual private network (VPN) framework are cut down to replace the traditional PKI/CA system. The proposed security scheme for the power dispatching data network guarantees both security and real time.