代换密码是密码学中的一种古典密码，这个代码就是用来实现该密码的-Substitution cipher is a classical cryptography password, this code is used to implement the password

置换密码是古典密码中的一种编码方式，该代码就是用来实现该编码的-Password replacement is a classical password encoding, the code is used to implement the coding