MPEG Video Encryption in Real-time Using Secret Key Cryptography.
Changgui Shi, Sheng-Yih Wang, Bharat Bhargava · 1999
We present a fast MPEG video encryption algorithm called RVEA which encrypts selected sign bits of the DCT coefficients and motion vectors using secret key cryptography algorithms such as DES or IDEA. RVEA features bounded computation time for any size of video frame and is robust to both plaintext and ciphertext attack. Since it adds a very small overhead to the MPEG video compression process, a software implementation is fast enough to meet the real-time requirement of MPEG video applications. Keywords: Multimedia data security, MPEG video encryption, MPEG codec. 1. Introduction Multimedia data security is very important for commercial multimedia applications. For example, in commercial video-on-demand applications, it is important to assure that only those who have paid for the services can view the videos. Similarly, in business video conferencing applications, it is imperative that only authorized persons can join the conference and share the video data. One way to secure dist...