Abstract. It is obvious that a prerequisite for use of mobile agent systems in many settings is that security is taken care of. A proper trust model is necessary in order to build security. A lot of security issues arise if the trust model implies that not all hosts are trusted. This paper discusses trust models, examines the security issues, and points at possible directions for solutions in terms of security services, mechanisms, and protocols.

No abstract

Abstract. We propose a method, called PREDIQT, for model based prediction of impact of architecture design changes on system quality. PREDIQT supports simultaneous analysis of several quality attributes and their trade-offs. This paper argues for the feasibility of the PREDIQT method based on a comprehensive industrial case study targeting a system for managing validation of electronic certificates and signatures worldwide. We give an overview of the PREDIQT method, and present an evaluation of the method in terms of a feasibility study.

No abstract

No abstract