@INPROCEEDINGS{Li:BeakingVPS:ICC2010, author = {Shujun Li and Syed Ali Khayam and Ahmad-Reza Sadeghi and Roland Schmitz}, title = {Breaking Randomized Linear Generation Functions based Virtual Password System}, booktitle = {Proceedings of 35th IEEE International Conference on Communications (ICC 2010)}, year = {2010}, doi = {10.1109/ICC.2010.5502416}, publisher = {IEEE}, note = {preprint available online at \url{http://www.hooklee.com/pub.html}}, }