A cipher is a technique of remodeling plaintext (readable textual content) into ciphertext (encoded textual content) utilizing an algorithm (algorithm). Ciphers are used for encryption, the method of changing plaintext into ciphertext, and decryption, the method of changing ciphertext again into plaintext.
Ciphers have been used for hundreds of years to guard delicate info from unauthorized entry. Among the most well-known ciphers embody the Caesar cipher, the Enigma machine, and the Knowledge Encryption Commonplace (DES). Trendy ciphers are sometimes applied utilizing computer systems and are far more advanced than their historic counterparts. Nevertheless, the fundamental ideas of cipher design stay the identical.
