The Design, Development and Application of a Proxy Credential Auditing Infrastructure for Collaborative Research

Single sign-on and delegation of privileges are fundamental tenets upon which e-Infrastructures and Grid-based research more generally have been based. The realisation of single sign-on and delegation of privileges in accessing resources such as the UK e-Science National Grid Service (NGS http://www.ngs.ac.uk) and other national facilities is typically facilitated by X.509-based Public Key Infrastructures (PKI) and exploitation of proxy certificates. This model can be categorised by authentication-oriented access and usage of resources. It is the case however that proxy certificates, can potentially be obtained and abused by a malicious third party without the knowledge of the holder. There is currently no method for end users to detect such misuse. In this paper we describe a novel proxy auditing solution that addresses this issue directly. We describe the design and implementation of this solution and illustrate its application in widely distributed and heterogeneous research environments. We focus in particular on the needs and requirements of such a facility in the ESRC funded Data Management through eSocial Science (DAMES www.dames.org.uk) project, where secure access and monitoring of social simulations and associated data sets are required by the researchers and associated data providers.