Cipher

A cipher is a method used to transform readable information (plaintext) into an unreadable format (ciphertext) to keep it secure. It involves algorithms and a key that, when applied, encrypts the data during transmission or storage, making it accessible only to those with the correct key. Ciphers are fundamental to digital security, used in everything from protecting emails to securing online banking. They ensure that sensitive information remains confidential, even if intercepted by unauthorized individuals. Think of a cipher as a sophisticated code that keeps your information private and protected.