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— Secure communication is very important in computer networks and authentication is one of the most eminent preconditions. However, common authentication schemes are not applicable in ad hoc networks because public key infrastructures with a centralized certification authority are hard to deploy there. We propose and evaluate a security concept based on a(More)
Ubiquitous communication will be one of the paradigms for the next decades. Mobile communication systems experience tremendous growth rates, Internet access is integrated in vehicles, pedestrians use Internet-ready mobile phones. This use of the Internet demands for a highly reliable and secure system, especially when used in non-academical environments(More)
This paper presents an efficient solution for the nomadic CORBA server problem. The generic CORBA proxy platform Π 2 provides efficient and transparent nomadic access to existing applications by offering a handover between different network types, optimized transport protocols for the wireless access, and application-specific compression. Up to now, Π 2 was(More)
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