Python实现栅栏密码的加密解密方法详解

#!/usr/bin/python
# Env: python3
# Author: afei_0and1
# -*- coding: utf8 -*-
def fence_Passwd_encode():string = input('请输入需要加密的明文：')num = int(input('请输入栅栏数(密钥)：'))res = ''for i in range(int(num)):#遍历循环输出结果for j in range(int(string.__len__()/num + 0.5)):#print(j)try:res += string[j*num+i]except:passprint(res)if(__name__ == '__main__'):fence_Passwd_encode() 

#!/usr/bin/Python
# Env: python3
# -*- coding: utf8 -*-
import sys
def fence_Passwd_burst():if (len(sys.argv) < 2):print("-----------------------------------------------")print(" ")print("Useg: python %s <fence_encryp_string>" % sys.argv[0])print("eg: python fence_Passwd_burst.py 'hloolelwrd'")print(" ")print("-----------------------------------------------")returnsecret = sys.argv[1]#栅栏密码解密，循环遍历有多少栏res = [step for step in range(2, len(secret)) if len(secret)%step == 0]for step in res:flag = ''#获取解密结果，以step栏进行遍历获取解密后的flagfor i in range(step):flag += secret[i::step]print('第%s栏： 解密结果：%s' %(str(step), flag))
if(__name__ == '__main__'):fence_Passwd_burst() 

#!/usr/bin/python
# Env: python3
# -*- coding: utf8 -*-
import sys
def generaget_W():if (len(sys.argv) < 3):print("-----------------------------------------------")print(" ")print("Useg: python %s <string> <col_num>" % sys.argv[0])print("eg: python fence_W-Type_encode.py helloworld 3")print(" ")print("-----------------------------------------------")returnstring = sys.argv[1]num = sys.argv[2]arr = [['*']*len(string) for i in range(int(num))]#行数，初始定义为0row = 0upflag = False#在矩阵上按“W”画出stringfor column in range(len(string)):arr[row][column] = string[column]if row == int(num)-1:upflag = Trueif row == 0:upflag = Falseif upflag:#上边界row -= 1else:#下边界row += 1#打印W图案for i in arr:print(i)#存放加密结果res = []for row in range(int(num)):for column in range(len(string)):if arr[row][column] != '*':res.append(arr[row][column])print(''.join(res))if(__name__ == '__main__'):generaget_W()