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In this paper we propose novel techniques to obfuscate Java programs for developing secure mobile agent systems. Our obfuscation techniques take advantage of polymorphism and exception mechanism of object-oriented languages and can drastically reduce the precision of points-to analysis of the programs. We show that determining precise points-to analysis in obfuscated programs is NP-hard and the fact provides a theoretical basis for our obfuscation techniques. Furthermore, in this paper we present some empirical experiments, whereby we demonstrate the effectiveness of our approaches.Communications and multimedia security : advanced techniques for network and data protection : 7th IFIP-TC6 TC11 International Conference, CMS 2003, Torino, Italy, October 2-3, 2003 : proceedings / Antonio Lioy, Daniele Mazzocchi (eds.)

Communications and Multimedia Security. Advanced Techniques for Network and Data Protection