说明：  The Guinness code is an encryption algorithm that uses a series of Caesar codes to form the alphabet of passwords. It is a simple form of multi table passwords. In order to make it clear, we need to start with the shift replacement code, which is the Caesar code. Caesar code is a kind of substitution encryption technology. All letters in plaintext are shifted back (or forward) according to a fixed number on the alphabet and then replaced with ciphertext.