August 30th, 2021 | Updated on March 5th, 2022
A cipher is a method of hiding words or text with encryption by replacing original letters with other letters, numbers and symbols through substitution or transposition. A combination of substitution and transposition is also often employed.
Cipher also refers to the encrypted text, cryptography system or encryption key for the original text.
Encrypted text is also known as ciphertext. Plaintext is the original, unencrypted text.