Pki In The Gk-star

The security of information system is one of the import problems studied widely at present. To cooperation work system, ensuring the security and reliability is the precondition to implement cooperation work efficiently. Therefore, the research of key technique in cooperation work system not only provides worth project for the building of enterprise or government cooperation work system, but also does significant research on the security of information.PKI is a technology that is based on the mechanism of the public key cryptography. It supplies a frame that allows you to deploy a security service, which is based on the unsymmetrical encryption. It allows you to create the correlate trust in identification and authenticity, which is based on the unsymmetrical encryption. The main purpose of PKI is to confirm the exclusive, the reality and the validity of the main body in the information networks and to resolve the trust problems. PKI protect the interest of various bodies in the information networks.The paper studies the application of digital certificates based on PKI, which is used in the field of network information security. After researched about the principal of cryptography and PKI, the paper puts forward an effective scheme for the secure of GK-Star, which used the technologies of X.509 digital certificates, digital signature and public key encryption related with SSL protocol. These technologies have technically ensured the identification, the secure transmission, the authenticity, and the coherence of data in the E-business affairs. A safer and more convenient system has been set up.