Coverless information hiding method based on multi-keywords

Abstract

As a new information hiding method, coverless information hiding has become a hot issue in the field of information security. The existing coverless information hiding method has realized that one Chinese character can be hidden in one natural text. However, the problem of the method is that the hiding capacity is too small. To address this problem, a novel method named coverless information hiding method based on multi-keywords is proposed in this paper. The main idea of the method is that the number of keywords will be hidden in the text where keywords have been hidden. Experimental results show that the proposed method can improve the capacity of information hiding in text.