DOI 10.1007/s00530-007-0083-z REGULAR PAPER New approaches to encryption and steganography for digital videos

Abstract In this work we propose a novel type of digital video encryption that has several advantages over other cur-rently available digital video encryption schemes. We also present an extended classification of digital video encryp-tion algorithms in order to clarify these advantages. We ana-lyze both security and performance aspects of the proposed method, and show that the method is efficient and secure from a cryptographic point of view. Even though the method is currently feasible only for a certain class of video sequences and video codecs, the method is promising and future inves-tigations might reveal its broader applicability. Finally, we extend our approach into a novel type of digital video stega-nography where it is possible to disguise a given video with another video.