Proposal for Efficient ID Management Scheme on TTP based Authentication Service

In this paper we propose an ID management scheme with user privacy protection. The scheme contributes to reducing the ID management cost for a large-scale network. TTP (trusted third party) based authentication services have a problem in user ID handling in that a TTP has to manage a large amount of user DDs for their service. Our proposed scheme minimizes the data volume that a TTP has to retain by using a cryptographic technique. We also describe the evaluation results for a prototype system based on a realistic environment where TTPs cooperate in providing the authentication service.