Definition: Cipher is an algorithm which is applied to plain text to get ciphertext. It is the unreadable output of an encryption algorithm. The term "cipher" is sometimes used as an alternative term for ciphertext.

How do you spell ciphertext?

the encoded version of a message or other text; cryptogram.

What is an example of ciphertext?

Ciphertext example

The Caesar cipher is a substitution cipher in which each letter in the plaintext is "shifted" a certain number of places down the alphabet. For example, with a shift of 1, A would be B, B would be replaced by C, etc.