A Secure Compression Scheme for Real-time Applications Using 2D-WT and Cellular Automata

In this work is presented a numerical implementation of a system that combines a compression scheme with an improved encryption procedure, which is applied to digital images. For the compression stage is considered the two-dimensional Haar wavelet transform, where an energy criterion is contemplated. On the other hand, the encryption scheme regarded is based on the synchronization of the cellular automaton rule 90, this system presents a good performance to encrypt images and it is resistant to cryptanalysis attacks such as the Chosen/Known-plaintext attack. The numerical conjunction of these procedures could be an appealing option for real-time applications such as video communications, video-surveillance among others.