@ARTICLE{Li:AnalyzingHDSP:IEEPVISP2006, author = {Chengqing Li and Shujun Li and Dan Zhang and Guanrong Chen}, title = {Cryptanalysis of a data security protection scheme for {VoIP}}, journal = {IEE Proceedings -- Vision, Image \& Signal Processing}, year = {2006}, volume = {153}, number = {1}, pages = {1-10}, doi = {10.1049/ip-vis:20045234}, note = {preprint available online at \url{http://www.hooklee.com/pub.html}}, }