Coverless Information Hiding Method Based on Combination Morse Code and Double Cycle Application of Starter

With the continuous development of modern network technology and data informatization, information security has been paid more and more attention by the society, and coverless information hiding has been becoming a new and important research field of information security. At present, the capacity of text coverless information hiding is very limited, generally 3–4 words per text. In order to increase the capacity of text coverless information hiding, this paper proposed a novel method of text coverless information hiding. In this method, the punctuation combination modified by Morse code is combined with the use of starter, list and loop statement to realize the hiding of a number of words in a normal text without modified. The experiments’ results show that this new method can hide more words and express all the words composed of representable characters.