The process of encryption and decryption is performed by using symmetric key cryptography and public key cryptography for secure communication.

Only someone with the correct decryption key can return it to its original, readable state. This dual process of encryption and decryption forms the backbone of modern cybersecurity.

To decrypt the message, the process is reversed. Caesar ciphers are often shown using a Caesar cipher wheel diagram, to illustrate that when the end of the alphabet is reached it goes around again ...