Security‐enhanced packet video with dynamic multicast throughput adjustment
International Journal of Network Management
A secure multicast protocol with copyright protection
ACM SIGCOMM Computer Communication Review
MPEG Video Encryption Algorithms
Multimedia Tools and Applications
A novel encryption algorithm for high resolution video
NOSSDAV '05 Proceedings of the international workshop on Network and operating systems support for digital audio and video
Scalable encryption for multimedia content access control
ICME '03 Proceedings of the 2003 International Conference on Multimedia and Expo - Volume 2
Low complexity controllable scrambler/descrambler for H.264/AVC in compressed domain
MULTIMEDIA '06 Proceedings of the 14th annual ACM international conference on Multimedia
Security implications of selective encryption
Proceedings of the 6th International Workshop on Security Measurements and Metrics
DSPM: dynamic security policy management for optimizing performance in wireless networks
MILCOM'06 Proceedings of the 2006 IEEE conference on Military communications
Puzzle: a novel video encryption algorithm
CMS'05 Proceedings of the 9th IFIP TC-6 TC-11 international conference on Communications and Multimedia Security
Secure transmission of video on an end system multicast using public key cryptography
MRCS'06 Proceedings of the 2006 international conference on Multimedia Content Representation, Classification and Security
Buffer occupancy feedback security control and changing encryption keys to protect MOD services
PSIVT'06 Proceedings of the First Pacific Rim conference on Advances in Image and Video Technology
A novel scrambling scheme for digital video encryption
PSIVT'06 Proceedings of the First Pacific Rim conference on Advances in Image and Video Technology
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Abstract: Conventional cryptography deals with the encryption and decryption of traditional textual data. The advent of networked multimedia systems will make continuous media streams, such as real-time audio and video, increasingly pervasive in future computing and communications environments. It is thus important to secure networked continuous media from potential eavesdroppers. We consider the process of real-time encryption and decryption for video streams. We implement a software-only security-enhanced MPEG player. The security-enhanced player implements a protection hierarchy by specializing the encryption scheme based on MPEG's coding sequences. Encryption may be performed on only I frames (intra-frames), on I and P frames (forward predicted frames), or on all I, P and B frames (bidirectional predicted frames). Increased protection incurs more overhead as more encryption is done. Our security-enhanced MPEG player incurs small average overheads in terms of achievable frame rate compared with the unmodified MPEG player depending on the MPEG frame size, encoding format and encryption method used, with speeds fast enough for most multimedia Internet applications. This is demonstrated by its integration with Vosaic, a real-time multimedia WWW browser. We also observe that increased compression actually results in less cryptographic overhead, due to the fact that more compression means less data, as well as longer dependencies between MPEG frames. Our work shows that video streams can also be encrypted and decrypted while satisfying the real-time requirements of the present-day Internet.