Cryptanalysis of Word Based Stream Cipher Dragon
Yupu Hu · Jisuanji gongcheng · 2008
This paper studies a new tube stream cipher,Dragon.Dragon uses non-linear feedback shift registers and S boxes.It operates on key sizes of 128 bit and 256 bit.Its mechanism,performance and design principles are studied,and the security against the well-known cryptanalysis is discussed.It is pointed out that Dragon is secure against the brute and TMD attack and also the linear approximations are presented.Some suggestions for Dragon are proposed.