@article{weko_11168_1, author = "Hidema,Tanaka and Toshinobu,Kaneko", title = "Optimized Linear Attack against Stream Ciphers of Pseudo Random Number Generators Using Non-linear Combiner", journal = "情報処理学会論文誌", year = "2003", volume = "44", number = "8", pages = "2163--2169", month = "aug" }