Linear Cryptanalysis For A Chaos-Based Stream Cipher
Ruming Yin, Jian Yuan, Qiuhua Yang, Xiuming Shan, Xiqin Wang · 2009
Linear cryptanalysis methods are rarely used to improve the security of chaotic stream ciphers. In this paper, we apply linear cryptanalysis to a chaotic stream cipher which was designed by strictly using the basic design criterion of cryptosystem – confusion and diffusion. We show that this well-designed chaos-based stream cipher is still insecure against distinguishing attack. This distinguishing attack promotes the further improvement of the cipher.