MPEG Video Encryption Algorithms
Multimedia Tools and Applications
An Introduction to Cryptography, Second Edition (Discrete Mathematics and Its Applications)
An Introduction to Cryptography, Second Edition (Discrete Mathematics and Its Applications)
On efficient transparent jpeg2000 encryption
Proceedings of the 9th workshop on Multimedia & security
Efficient video encryption scheme based on advanced video coding
Multimedia Tools and Applications
Multimedia Content Encryption: Techniques and Applications
Multimedia Content Encryption: Techniques and Applications
Selective video encryption based on advanced video coding
PCM'05 Proceedings of the 6th Pacific-Rim conference on Advances in Multimedia Information Processing - Volume Part II
Digital video scrambling method using intra prediction mode
PCM'04 Proceedings of the 5th Pacific Rim conference on Advances in Multimedia Information Processing - Volume Part III
Digital video scrambling using motion vector and slice relocation
ICIAR'05 Proceedings of the Second international conference on Image Analysis and Recognition
H.264 video encryption scheme adaptive to DRM
IEEE Transactions on Consumer Electronics
Cryptanalysis of an Image Scrambling Scheme Without Bandwidth Expansion
IEEE Transactions on Circuits and Systems for Video Technology
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In recent years, many practical algorithms have been put forward for images and videos encryption. Security analysis on these encryption algorithms focuses research on cryptographic security, and few work relate to visual security. Visual security means that the encrypted video content is unintelligible to human vision. The higher visual security the encryption algorithm can provide, the less information an attacker from the cipher-images to obtain, the greater the difficulty of attack is. Therefore, visual security assessment for cipher-images is a very important indicator in security evaluation of visual media. So far, systematic research on visual security assessment for cipher-images is far from enough. Moreover, there are no practical objective indicators or evaluation methods on visual security have been proposed at present. According to the changes on image information entropy between cipher-images and original images, we present a visual security assessment algorithm based on local entropy. The experiments result shows that the scheme can provide an efficient objective assessment which is match up to subjective assessment, and is also suitable for security assessment of other selective encryption algorithms.