👉 A cipher is a method of encrypting or decrypting information using substitution, encryption, or decryption. In cryptography, a cipher is used to create a unique code that can be used to transmit information securely over an encrypted channel. Ciphers are widely used in various applications such as data security, communication, and authentication. They help protect sensitive information from unauthorized access by obfuscating the original message or providing a way for attackers to decipher it without knowing its content. There are two main types of c
