普莱费尔格密码,密钥(network),明文(we will have a meeting),计算密文


普莱费尔格密码加密步骤如下: 1. 构建密钥表:将密钥中的字母去除重复后,按字母表顺序补充剩余字母,得到如下 5×5 的密钥表: ``` n e t w o r k a h v i l m p b u g c q x y s d f z ``` 2. 对明文进行分组:两两一组,如果两个字母相同,在中间插入“x”,如果最后一组只有一个字母,也补充“x”。明文“we will have a meeting”分组为:“we” “wi” “ll” “ha” “ve” “a ” “me” “et” “in” “gx” 3. 加密: - 如果两个字母在同一行,就用右侧的字母替代。 - 如果两个字母在同一列,就用下方的字母替代。 - 如果两个字母既不在同一行也不在同一列,就用构成矩形的另外两个顶点字母替代,同行字母优先。 按照上述规则加密得到的密文为:“EK XM OS GH AO TV XM LL” [2024-09-24 18:36:35 | AI写代码神器 | 276点数解答]
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