Lecture Notes in Computer Science 5222 Commenced Publication in 1973 Founding and Former Series Editors: Gerhard Goos, Juris Hartmanis, and Jan van Leeuwen Editorial Board David Hutchison Lancaster University, UK Takeo Kanade Carnegie Mellon University, Pittsburgh, PA, USA Josef Kittler University of Surrey, Guildford, UK Jon M. Kleinberg Cornell University, Ithaca, NY, USA Alfred Kobsa University of California, Irvine, CA, USA Friedemann Mattern ETH Zurich, Switzerland John C. Mitchell Stanford University, CA, USA Moni Naor Weizmann Institute of Science, Rehovot, Israel Oscar Nierstrasz University of Bern, Switzerland C. Pandu Rangan Indian Institute of Technology, Madras, India Bernhard Steffen University of Dortmund, Germany Madhu Sudan Massachusetts Institute of Technology, MA, USA Demetri Terzopoulos University of California, Los Angeles, CA, USA Doug Tygar University of California, Berkeley, CA, USA Gerhard Weikum Max-Planck Institute of Computer Science, Saarbruecken, Germany Tzong-Chen Wu Chin-Laung Lei Vincent Rijmen Der-Tsai Lee (Eds.) Information Security 11th International Conference, ISC 2008 Taipei, Taiwan, September 15-18, 2008 Proceedings 13 Volume Editors Tzong-Chen Wu National Taiwan University of Science and Technology Department of Information Management No. 43, Sec. 4, Keelung Road, Taipei 106, Taiwan E-mail:
[email protected] Chin-Laung Lei National Taiwan University, Department of Electrical Engineering No. 1, Sec. 4, Roosevelt Road, Taipei 106, Taiwan E-mail:
[email protected] Vincent Rijmen Graz University of Technology Institute for Applied Information Processing and Communications (Austria) Katholieke Universiteit Leuven, Department of Electrical Engineering (Belgium) Inffeldgasse 16a, 8010 Graz, Austria E-mail:
[email protected] Der-Tsai Lee Academia Sinica, Institute of Information Science No.