Athanasios Karantjias

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Public key infrastructures (PKIs) is recommended as the most appropriate solutions for achieving secure mobile services. This paper identifies the need for security in mobile communications and investigates the use of lightweight protocols such as the XML Key Management (XKMS) protocol for accessing PKI services. Finally it presents a secure mobile(More)
It is acknowledged that the latest stable XML technologies, standards and specifications may build real interoperable and secure enterprise privacy-aware implementations. However, existing implementations do not address the users' need to easily handle their identifiers and credentials while providing pluggable modules for interconnecting their pre-existing(More)
Migration policy making and monitoring constitute critical issues for European countries, given the impact of modern phenomena such as illegal employment on economic growth and future prosperity. The dynamic and complex nature of migration problems demands common approaches and collaborative actions among all stakeholders both at National and European(More)
EXECUTIVE SUMMARY Electronic services have become a critical force in service oriented economies introducing new paradigms like connected governance, ubiquitous and ambient public services, knowledge-based administration, and participatory budgeting. The success of e-Government integration requires the modernization of current governmental processes and(More)