Support Micro-payment Federated Single Sign-on System

The present Web Service systems employ traditional authentication and authorizationmechanisms with which an user has to resign-on to each Web Service. This methodwastes time and resources of system and also brings threats to the security of thesystem. To solve this problem, a new method called Single Sign-On (SSO) isproposed. However, many SSO products use centralized control on the users whichprevents the other Web Services from sharing one Web Service's trust on users andgreatly limits the wide using of SSO on the Internet.Meanwhile, with the progress of P2P computing, every node can provide more andmore resource, however, users hope to be awarded by providing sharing resource toothers. For instances, the users using BT or eMule software do NOT wish to be a seedfor a long time. And for the low cost of the resources, the amount of money needingto pay for the resource is very small, usually several fen or several yuan. Apparently,the traditional electronic payments are NOT suitable to handle it. So, micropaymentmethods are introduced. How to processing a security payment is a problem that weneed to think about.This thesis proposes a federated SSO model supporting micro-payment and a part ofthe implementation of this System is presented. The model uses the federatedauthentication and authorization to ensure that other services can share the WebService's trust to the users. In the sharing of resources, users can pay and clear by thereputation-based micropayment method.