Message Concealing in Vector Images

Various steganography techniques are used to conceal information. Typically, information is hidden in images, audio and video files, text documents, etc. We are considering vector images consisting of various mathematical objects (points, lines, curves of first and second-order curves, the Bezier curves, nodes, tangents, control points, etc.). The techniques of information hiding change those mathematical objects, for instance, in the way of encoding the basic points' coordinates. In the article, two methods (bit and pattern) are considered and being experimentally tested in order to track the possible destruction of embedded data. To do this, affine transformations are used and our experiments consist of repeated attempts to destroy information due to the use of various affine transformations with different parameters. The results demonstrate that vector images can indeed be used to conceal information, but the resistance against certain affine attacks is not always high.