The capacity of the Hopfield associative memory
IEEE Transactions on Information Theory
Methods for encrypting and decrypting MPEG video data efficiently
MULTIMEDIA '96 Proceedings of the fourth ACM international conference on Multimedia
Random Permutations from Logarithmic Signatures
Proceedings of the The First Great Lakes Computer Science Conference on Computing in the 90's
Encryption System Based on Neutral Network
Proceedings of the IFIP TC6/TC11 International Conference on Communications and Multimedia Security Issues of the New Century
Multimedia Security Handbook
MPEG Video Encryption Algorithms
Multimedia Tools and Applications
Partial encryption of compressed images and videos
IEEE Transactions on Signal Processing
Digital video encryption algorithms based on correlation-preserving permutations
EURASIP Journal on Information Security
A permutation-based correlation-preserving encryption method for digital videos
ICIAR'06 Proceedings of the Third international conference on Image Analysis and Recognition - Volume Part I
A novel image encryption/decryption scheme based on chaotic neural networks
Engineering Applications of Artificial Intelligence
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A cryptosystem based on a clipped Hopfield neural network (CHNN) was recently proposed primarily for encryption of digital images and videos. The system is fast and suitable for hardware implementation. The present paper investigates the security aspects of the CHNN-based cryptosystem, and the following weaknesses are pointed out: 1) the cryptosystem is not sufficiently secure against the ciphertext-only attacks due to the weak randomness properties of the generated keystream, and 2) the cryptosystem is insecure against known/chosen-plaintext attacks and only one known plaintext-ciphertext pair is enough to completely break all ciphertexts of the same or smaller size obtained using the same encryption keys. The security of CHNN-based cryptosystem cannot be improved unless the basic model is fundamentally changed.