TY - JOUR T1 - Design and Construction of Nonlinear Boolean Function in Stream Cipher System AU - Tywofik, Zaki S. AU - M. Zaki, Salim AU - Taha Yaseen, Ali JO - Journal of Engineering and Applied Sciences VL - 13 IS - 20 SP - 8448 EP - 8451 PY - 2018 DA - 2001/08/19 SN - 1816-949x DO - jeasci.2018.8448.8451 UR - https://makhillpublications.co/view-article.php?doi=jeasci.2018.8448.8451 KW - Permutation function KW -generator function KW -nonlinear function KW -Boolean function KW -stream cipher KW -computer networks AB - Nonlinear stream cipher is a fundamental system in protecting data security in computer networks due to its high level of protection. This type of cipher needs moderate level of calculation to be attacked it by attackers. This research presents an analysis to nonlinear Boolean function and its role in nonlinear generator of sequence keys by using generator algorithm by proposing an algorithm to generate those functions. This algorithm will be simulated to help designers choosing the suitable permutation function. ER -