Bridging CardSpace and Liberty Alliance with SIM authentication

There are today two major Identity Management solutions, namely the Liberty Alliance and CardSpace from Microsoft. Unfortunately, these solutions are not interoperable.This paper proposes an Identity Management solution that integrates both the Microsoft CardSpace and the Liberty Alliance Identity Management. The idea is to integrate the current SIM authentication used in GSM with both Liberty Alliance and CardSpace such that it can be used for Internet services. Indeed, this is a step further than earlier work that uses SIM authentication for WLAN (Wi-Fi – EAP-SIM). To use the mobile phone as the unified authentication token is a compelling idea due to its popularity and high penetration.