Code (Cryptography)

High Quality Content by WIKIPEDIA articles! In cryptography, a code is a method used to transform a message into an obscured form, preventing those who do not possess special information, or key, required to apply the transform from understanding what is actually transmitted. The usual method is to use a codebook with a list of common phrases or words matched with a codeword. Encoded messages are sometimes termed codetext, while the original message is usually referred to as plaintext.