Methods for encrypting and decrypting MPEG video data efficiently
MULTIMEDIA '96 Proceedings of the fourth ACM international conference on Multimedia
A fast MPEG video encryption algorithm
MULTIMEDIA '98 Proceedings of the sixth ACM international conference on Multimedia
An Empirical Study of Secure MPEG Video Transmissions
SNDSS '96 Proceedings of the 1996 Symposium on Network and Distributed System Security (SNDSS '96)
Enhancing security of frequency domain video encryption
Proceedings of the 12th annual ACM international conference on Multimedia
Efficient frequency domain selective scrambling of digital video
IEEE Transactions on Multimedia
A robust chaos-based image encryption scheme
ICME'09 Proceedings of the 2009 IEEE international conference on Multimedia and Expo
Local histogram based geometric invariant image watermarking
Signal Processing
Another Constructed Chaotic Image Encryption Scheme Based on Toeplitz Matrix and Hankel Matrix
Fundamenta Informaticae
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Focusing on the encryption of digital image and video, an intrinsic weakness of all existing discrete-cosine-transform (DCT) based algorithms is reported. This serious weakness of DCT-based encryptions is analysed theoretically and then demonstrated practically. As an instance, a novel attack algorithm is proposed to acquire the sketch information from encrypted data without any prior knowledge of the encryption algorithm. The quality of the extracted sketch is then evaluated by comparing with the original picture edge. Thereafter, to prevent this kind of attack, a full inter-block shuffle (FIBS) approach is proposed. This method can be employed to improve the encryption security in all DCT-based algorithms, such as JPEG, MPEG video and H.26x video.