HLLACF: A Hierarchical Location-Diversity-Based Low-Delay Anonymous Communication Framework
Xin Chen, Huaping Hu, Bo Liu, Fengtao Xiao, Zunguo Huang · 2008
In order to improve the communication speed, low-delay anonymous communication systems, such as Tor, prefer high performance router when selecting routers. This choice makes routers' selection being local. This paper first proposes router selecting algorithm based on location diversity and RTT; then a hierarchical location-diversity-based low-delay anonymous communication framework is presented. This framework's security is analyzed and a simulation experiment and result analysis is given. The theoretic analysis and simulation experiment indicate that the HLLACF can prevent AS-Level passive attack and other similar attacks well while decreasing communication delay and HLLACF also scales well.