부산대학교 도서관

As information technology and the Internet advance rapidly, in order to increase administrative performance and international competitiveness, our government actively establishes e-government implement. Our government started to build PKI in 1998 and promoted 「The Project of Citizen Digital Certificate」 in 2002. Citizen Digital Certificate which is assigned by the government is through the verification of the PKI mechanism to confirm the identity of Internet Users, and ensure the security of data. Citizen Digital Certificate successfully resolve the identification problem of Internet users and data transmission security. Therefore, it is regarded as the most important foundation of e-government implement. However, according to the statistics of the MOICA, the number of Citizen Digital Certificate still does not achieve the expected policy goal. In order to understand the application factors of Citizen Digital Certificate, this research is based on of Innovations Diffusion theory of Rogers and combines with other theories and frameworks such as Technology acceptance model and Trust model so as to examine the users and sub-users of Citizen Digital Certificate. The purposes of this research are as follows. First, to understand the popularization of Citizen Digital Certificate; second, to investigate the differences between users and sub-users in perceived attributes of Citizen Digital Certificate; third, to examine the perspective of users and sub-users toward publicity and trust; and last, to find the affect factors of diffusion of Citizen Digital Certificate policy. All the data of valid samples were analyzed by using T-test, one way ANOVA, and Logistic Regression Analysis. The findings of this research go as follows: (a) Citizen Digital Certificate lacks overall and deliberate promotion plans. (b) users and sub-users have critical different variables: compatibility, relative advantage, perceived ease of use, communication, mass media, credibility of our government, and confidence of the internet. (c) positive prominent factors of using Citizen Digital Certificate include compatibility, relative advantage, perceived ease of use, communication, and mass media.