ComputingComputer ScienceInformation TechnologyComputer SecurityCryptographyDigital CommunicationCryptographic AlgorithmsCryptography In ApplicationsData EncryptionBroadcastEncryptionEncryption AlgorithmsReal-time ProcessingSecure Data TransmissionSecure Transmission DesignVideo MediaVideo Retrieval
Continuous digital media such as video and audio are processed and communicated within networked infrastructures. The security of these media has become very important. If the encryption process is part of the video retrieval and playback process, then encryption and decryption must be performed in real time and the speed of the encryption/decryption algorithm matters. We show in this paper that the very different statistical behavior of compressed video media, in comparison to text, leads to a real-time, secure, and efficient encryption algorithm, which we call the Video Encryption Algorithm (VEA). Keyword: MPEG, statistical behavior, video encryption algorithm. 1 Introduction Emerging distributed multimedia applications such as Video-on-Demand, video broadcast, multimedia mail and video conferencing must be provided with secure transmission. One approach is to simply apply known encryption algorithms such as DES [NIS93] or RSA [SA78]. However, if a user wants to use the encryption...