Architecture of CA-based SSO Service for Multi-trust Domain

Abstract

Web portal enterprises are interested in creating of the new and various web services as mashup services with Web 2.0 environment. For this, it is necessary to have the SSO(Single Sign On) service for the user convenience. User can use the various web services by one authentication using the user information sharing between the different websites by SSO. But the legacy SSO service is not sufficient that the range of user authentication is limited between the cooperated websites within one web portal(single trust domain). And it is not enough to connect with payment-related service in security aspect. So the web portal enterprises demand the more convenient SSO service with the appropriate security can be used in payment service. This paper proposes the new SSO service for multi-trust domains. It is very useful for converged and mashup services that are constructed by more than two web portals.