Keywords block ciphers. finite filed, permutation polynomials.,,,, orthomorphic permutation ,quick trickle permutation,,,,, Boolean permutation, arrangment, mult-output du

• 分组密码;有限域;置换多项式;正形置换;全距置换;布尔函数;多输出函数;弹性函数;拉丁方;排列;排序;