python自动解密
python实现移位加密和解密本文实例为大家分享了python实现移位加密和解密的具体代码，供大家参考，具体内容如下
代码很简单，就不多做解释啦。主要思路是将字符串转为ascii码，将大小写字母分别移位密钥表示的位数，然后转回字符串。需要注意的是，当秘钥大于26的时候，我使用循环将其不断减去26，直到密钥等效小于26为止。
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def encrypt(): temp = raw_input("please input your sentence: ") key = int(raw_input("please input your key: ")) lista = map(ord,temp) lens = len(lista) for i in range(lens): a = lista[i] if 65 <= a <= 90: a += key while a > 90: a -= 26 elif 97 <= a <= 122: a += key while a > 122: a -= 26 lista[i] = a lista = map(chr,lista) lista = ''.join(lista) print listadef unencrypt(): temp = raw_input("please input your sentence: ") key = int(raw_input("please input your key: ")) lista = map(ord, temp) lens = len(lista) for i in range(lens): a = lista[i] if 65 <= a <= 90: a -= key while a < 65: a += 26 elif 97 <= a <= 122: a -= key while a < 97: a += 26 lista[i] = a lista = map(chr, lista) lista = ''.join(lista) print listaa = int(raw_input("input 0 to encrypt and 1 to unencrypt"))if a == 0: encrypt()elif a == 1: unencrypt() |
效果
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原文链接：https://blog.csdn.net/St_laurence/article/details/83352951