Analysis of Current Steganography Tools: Classifications & Features

The technology of information hiding has developed rapidly in recent years. The number of steganography software has reached more than 200 at present. This paper focuses on the steganography tools? algorithms. Based on the analyses of these algorithms, we partition these tools into five categories: (1). Spatial domain based steganography tools; (2). Transform domain based steganography tools; (3). Document based steganography tools; (4) File structure based steganography tools; (5). Other categories, e.g. video compress encoding and spread spectrum technique based. Moreover, we give an in-depth analysis of the feature of each category.