| With the popularity of mobile devices and the advance of mobile communication, mobile business have dominated the market. People can use mobile devices to carry out various business such as buying books, buying equities, using digital products(videos or audio), delivering e-mails and accessing network resources.When a service is requested between companies and institutions that they are in different domains, it needs to implement the authentication in different enterprises or institutions. Due to the limited compute capacity of mobile devices, it is necessary to research the server-aided verification technology to guarantee the mobile device’s security, non-repudiation, simplicity, efficiency and mobility To solve these problems,we make the following research achievements in this paper:1. We analyze the server-aided verification architecture and design a server-aided verification algorithm based on RSA. This algorithm provides a solution to the mobile device sever-aided verification.2. We propose a sever-aided cross-domain authentication scheme based on RSA.The new scheme can help mobile devices access resources between different domains.3. We build a cross-domain authentication system framework based on MVC pattern and realized the digital certificate’s dynamic management of CA. The CA administrator can respond the certificate query submitted by the user, and the user can send the certificate issuance, renewal and revocation query to CA. |