Multi-domain Public Key Infrastructure for Information Security with Use of a Multi-Agent System

We propose a multi-agent based common framework for interoperability among CAs (Certificate Authorities) from multiple PKI (Public Key Infrastructure) domains to build trust and secure for electronic transactions. Most of the countries recognize PKI as a powerful technique for security services and implemented their own PKI for online user. Several trust models have been used in PKI, and achieving interoperability between them is a major issue which requires recognition of certificates from different domains in order to perform transactions confidently in a cross border application. In our system, User Agent, Trust Agent and Management Agent are created. These software agents co-operate each other for user authentication and authorization processes autonomously in multiple PKI domains within the ASEAN region to encourage the recognition of digital signature to enhance regional market. Our system intended to facilitate not only for matured e-commerce but also for individual start up entrepreneur for secure trading by taking into consideration of regional needs.