An adaptive algorithm for the steganographic embedding information into the discrete Fourier transform phase spectrum
On the example of digital images there are investigated properties of the discrete Fourier transform (DFT) used to embed information into the phase spectrum. The investigation helped to form a new steganografic algorithm that can be used in case of non- compressed images. Peculiarity of the algorithm is changeable size of information put into the blocks of stego-image. Characteristics of the suggested algorithm are comparable with the analog ones, they allow to get the correct information without mistakes.