diy4.py

import random

# 私钥
key = "abcdefgh使用编程实现位移替换加密,制作密码机关真是太好玩了哈哈!"
# 要加密语句
message = input("请输入语句:")
key_message=""
# 请使用私钥key，对message进行加密
for i in message:
    key1=i
    key2=random.choice(key)
    key3=random.choice(key)
    text=key1+key2+key3;
    key_message+=text
# print(key_message)

noise=input("请输入密文:")
list_message=list(key_message)
list_message.insert(random.randint(0,20),noise)
result_message="".join(list_message)
print(result_message)