A string representing an encoded piece of text.
A type of crossword puzzle where the letters of the alphabet are represented by numbers and the solver must identify them by their position and frequency.
A word or phrase (or by extension a concept) used to make a (concealed) reference to another word or concept.
A ciphertext, a cryptogram, an encrypted value. Usually used with the preposition "of" followed by the value that is hidden in it.
The process of obscuring information to make it unreadable without special knowledge, key files, or passwords.