A Compressed Video Encryption Approach Based on Spatial Shuffling

Video data security is very important for multimedia commerce such as video-on-demand and real-time video multicast. Nowadays, many video encryption methods have been put forward. This paper presents a new kind of video encryption approach that based on the syntax character of compressed digital video bitstreams. Using this approach, we can shuffle the critical data blocks in each video frame with different shuffling tables generated by a cipher key. These critical data blocks have an important impact on image reconstruct, so the result images can´t be recognized without valid cipher key. The simulation result shows that this approach provides overall high security, high speed, size preservation and format compliant, so it can meet the demands of security, real-time and low cost at the same time