Introduction - If you have any usage issues, please Google them yourself
The Kaiser code (Caeser) is the operational command used to encrypt messages delivered by messenger. The advantage of permutation encryption is that it is easy to implement but difficult to break. The sender and receiver easily beforehand a key, and then through the key generation from the plaintext ciphertext, even if the enemy gets through the ciphertext ciphertext, directly guess the meaning, in practice is not possible.
There are many kinds of permutations in cryptography, but all different permutations have 2 identical elements: key and protocol. The key to the Kaiser code is x. The algorithm replaces the letters in the ordinary alphabet with letters corresponding to the key.