PERSISTENCE INCREASE OF STEGANOGRAPHIC SYSTEM AGAINST JPEG-ATTACKS BY ELIMINATING PHENOMENA OF METAMORPHOSIS OF BLOCKS OF STEGO-CONTAINERS

Abstract

The problem of information steganography hiding was reviewed. The problem steganographic methods implementation, which performs steganography data hiding in bitmap image frequency domain was shown. Such methods usually are positioned to be persistant to JPEG-image compression container. It is shown that in some cases JPEGcompression results in the transformation of usable into unusable units and vice versa. This makes data extraction from the image impossible. An approach to solving this problem is proposed in this paper. The software realization and experimental study of the proposed approach was described.