Virtual organisations in computer grids and identity management

摘要

This paper provides insight into one of the key concepts of Open Grid Services Architecture (OGSA) Virtual Organisations (VO) and analyses problems related to Identity management in VOs and their possible solution based on using WS-Federation and related WS-Security standards. This paper provides basic information about OGSA, OGSA Security Architecture and analyses VO security services. A detailed description is provided for WS-Federation Federated Identity Model and operation of basic services such as Security Token Service or Identity Provider, Attribute and Pseudonym services for typical usage scenarios.