Arithmetic coding for data compression
Communications of the ACM
Adaptive chosen-ciphertext attack on secure arithmetic coding
IEEE Transactions on Signal Processing
IEEE Transactions on Signal Processing
Design of integrated multimedia compression and encryption systems
IEEE Transactions on Multimedia
Multimedia Selective Encryption by Means of Randomized Arithmetic Coding
IEEE Transactions on Multimedia
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Nonlinear dynamic filter (NDF) has been used in chaos-based multimedia cryptosystem. However, our study shows that the key of randomized arithmetic coding (RAC) based on NDF can be successfully recovered under chosen plaintext attack. Moreover, current ciphertext block can't be decoded unless preceding plaintext is available. In order to enhance the security and feasibility used in multimedia applications, the algorithm is improved by building a new correlation between ciphertext and coefficients. Its security is enhanced that can effectively resist chosen plaintext attack. Its feasibility is also improved that can decode ciphertext block without availability of preceding plaintext with which a user can play multimedia data starting at any place. The analysis and simulations show that the improved algorithm can evidently enhance both security and feasibility