Cryptography and steganography of video information in modern communications
Zenon Grytskiv, Svyatoslav Voloshynovskyy, Yuriy Rytsar · Archive ouverte UNIGE (University of Geneva) · 1998
In this paper image cryptography and steganography performed in frequency domain using random phase mask encoding are presented. The use of random phase mask allows to deccorrelate initial image and makes it unrecognized. This property is used for proposed image encryption and for steganography to increase the security level of the encoded image and to make it less visible. Finally, two keys are needed to decrypt the image. The efficiency of the proposed approach is demonstrated by the computer modeling.