👉 In cryptography and coding theory, a semiconcealed message refers to a message that is not fully revealed until it has been encrypted. The term was introduced by Alan Turing in his famous 1936 paper "On Computable Numbers, with an Application to the Entscheidungsproblem." It refers to information that cannot be directly or easily inferred from the actual message itself but can be deduced from its encryption. Semiconcealed messages are often used for security purposes because they make it