Search

During the authentication process of web-based single sign-on system, it is insecure that all authentication messages are forwarded by the browser, and its integrity protection is not comprehensive. This vulnerability can be exploited by attackers to bypass the authentication systems, login any account. In this work we analyze the vulnerability threat model and its root causes in detail, and propose an authentication algorithm based on Hash-tree. This algorithm can not only improve the security of the system, but the processing efficiency of the system is also acceptable according to the simulation results.

Bar chart is the most common graph when we need to process some data counting, analysis and comparing. But there is no inner bar chart object in IDL object graphics. According to the outlook demands and the functional requirements of bar char object, a visual expression method of bar char object was implemented based on the inner basic graphics objects in IDL. The implementation method was presented in detail. The results show it can meet the requirements of bar char displaying of common information, and it is effective and extendable.