Research


Research Interests
  • Access control
  • Distributed system security architecture
  • Software security
  • Peer-to-peer security
Current Projects
  • Cooperative Secondary Authorization Recycling (CSAR): In this project, we propose and study the cooperative secondary authorization recycling (CSAR) system. The goal of CSAR is to enable reuse of authorization decisions among cooperative secondary decision points (SDPs) to further improve the resilience of the authorization infrastructure to network and authorization server failures without incurring much network and system overhead. (Detail at Lersse website)
Past Projects
  • Virtual Machine and Security: What has virtual machine brought to security?
  • Steganography and steganoanalysis
  • Software security: building software with better security
  • A Security Analysis of UBC Wireless Network (with Wing-Keong Woo, Joyce Hsien-Yin Chiang, and Johnson Ming-Che Tsai)
Presentations
  1. Authorization recycling in RBAC systems, in SACMAT'08, Estes Park, Colorado, USA, June 12, 2008. [pdf]
  2. Cooperative Secondary Authorization Recycling, in HPDC'07, Monterey, California, USA, June 27, 2007 [pdf]
  3. Design of an agent-based mobile commerce system, presented at the Software Engineering Exploration and Discussion Seminar (SEEDS), January 2004, UBC. [URL]
Refereed Journal Papers
  1. Qiang Wei, Matei Ripeanu, and Konstantin Beznosov, "Cooperative Secondary Authorization Recycling," IEEE Transactions on Parallel and Distributed Systems, forthcoming. [pdf]
  2. Qiang Wei, Jason Crampton, Konstantin Beznosov, and Matei Ripeanu "Authorization Recycling in Hierarchical RBAC Systems," to appear in ACM Transactions on Information and System Security (TISSEC), 32 pages, preprint.
Refereed Conference Papers
  1. Qiang Wei, Matei Ripeanu, amd Konstantin Beznosov, "Authorization using the publishsubscribe model," In Proceedings of the 2008 IEEE International Symposium on Parallel and Distributed Processing with Applications (ISPA'08), December 10-12, 2008, Sydney, Australia. IEEE Computer Society
  2. Qiang Wei, Jason Crampton, Konstantin Beznosov, and Matei Ripeanu "Authorization recycling in RBAC systems," In Proceedings of 13th Symposium on on Access Control Models and Technologies (SACMAT'08), June 11-13, 2008, Estes Park, Colorado, USA. pp.10. (Acceptance rate: 22%)
  3. Qiang Wei, Matei Ripeanu, and Konstantin Beznosov, "Cooperative Secondary Authorization Recycling," In Proceedings of 16th Symposium on High Performance Distributed Computing (HPDC'07), June 25-29, 2007, Monterey, California, USA. pp.10. [pdf] (Acceptance rate: 20%)
  4. Qiang, W. and Hin, H. K. 2002. Agent-Based System for Mobile Commerce. In Proceedings of the 16th international Parallel and Distributed Processing Symposium (April 15 - 19, 2002). IEEE Computer Society, Washington, DC, 56.
Refereed Posters
  1. Qiang Wei, Konstantin Beznosov and Matei Ripeanu, "Cooperative Secondary Authorization Recycling," Poster, 15th USENIX Security Symposium, August 2006. [ppt]
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