what is cipher text
Ciphertext can also be referred as encrypted text. Before encryption we had plaintext. The term cipher is sometimes used as an alternative term for ciphertext. In cryptography, cipher is an algorithm that is applied on the plain text to get the ciphertext. Another name for ciphertext is encrypted or encoded information because it is unreadable by a human or computer without the proper algorithm.
In the substitution cipher, plaintext characters or units are replaced directly with cipher text. Famous instances of this cipher include the One-time pad and the Caesar cipher. Transposition Cipher. In the transposition cipher, the resulting cipher text is a permutation of the plaintext input.