Study On PKI Technology For Security In Documents Transmission System

Documents Transmission System(DTS) is core and basic system in E-Gov Systems. Its development and application has been the main subject in governments' information building. Because of the special characteristics, the security protection in the process of DTS has been focused on greatly.Public Key Infrastructure (PKI) is the most comprehensive technology in the information secure field. PKI technology adopt certificate manage public key; through the third party organization which can be believed--CA(Certificate Authority) bundle users' public key and users' other identification information (such as name, E-mail, ID card number etc).Through CA organization, the problem of the key distribute and key management have been better solved, With the digital certificate, realizing encryption and authentication to the data transmission, guarantying the confidentiality, authentication, integrity and non-repudiation of the information transmission.This article compares with the different normal system structures and develop ways,analyses government business process and its characteristics, discusses deeply about the security in DTS as center. In this paper, a PKI model is presented. The presentation of PKI model and the consideration of certificate manager, authentication and access control about it. Further, a Electronic Seal System integrated in DTS is implemented based on PKI. This system uses ways of module based, implements certification, information integrality and undeniable in DTS.