Digital Signature Based on User Role Token and Its Application to E-Government

Information is an irreversible general trend of social and world economy´s development. E-government means to make full use of information technology to enhance the effective management of the government, in order to promote transformation of government functions and improve management level. However, e-government faces with some problems, such as security issues. First, this paper analyzes the characteristics of E-government system and points out its security threats. Then this paper gives outs an frame of E-government security system based on the user role certificates. In the end, the implementation model based on web service is described in detail.