A filter firewall use the addressing information contained in each request to determine the permissibility of an operation 过滤防火墙使用包含在每一个请求中的定址信息决定是否允许操作。
2.
For multi - output boolean functions , we give out the definition of correlation permissibility . by investigating some properties of the balanced multi - output boolean functions , a feasible strategy of evolvement of function is presented . based on the method of simulated annealing and using the strategy presented in the 3rd section of capter four , a method is described to tell us how we can get some multi - output boolean functions with low correlation permissibility and high nonlinearity 对于多输出布尔函数,本文提出了相关容许度的概念,针对平衡的多输出布尔函数,研究了这类函数的分量函数之间的关系和性质,在不改变部分分量函数的情况下,分析了相邻函数演化的可行性和演化策略,基于simulatedannealing算法,本文分别提出了具有高非线性度的一阶相关免疫平衡函数的优化设计算法,以及具有高非线性度和低相关容许度的布尔函数或多输出布尔函数的优化设计算法。
