关键词: 数字证书, 电子政务外网, 区块链, 身份认证, 安全性

Abstract: With the rapid development of information technology, information office has become the trend of the development of all sectors of society. As an important foundation and carrier of e-government, e-government extranet plays an increasingly important role in improving government management and service capabilities, and its security has also attracted much attention. Through analyzing several common authentication methods in e-government extranet and e-government system, this paper concludes that the digital certificate authentication method based on block chain can effectively solve the problems of low efficiency and single point failure of traditional digital certificate authentication system. The research of this system is not only applicable to the e-government extranet, but also has certain reference significance to the establishment of trust system in the security management of industry private network and other network systems.

Key words: digital certificate, e-government extranet, block chain, identity authentication, security