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A New Chaos and Permutation Based Algorithm for Image and Video Encryption

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Document pages: 4 pages

Abstract: Images and video sequences carry large volumes of highly correlated andredundant data. Applications like military and telecommunication requireencryption methods to protect the data from unwanted access. This requirementin most cases needs to be realized in real-time. In this paper, we propose afast new Fiestal-structured approach for image and video encryption based on achaotic random sequence generator and a Permutation-Inverse Permutation (PIP)pixel transform. This approach utilizes mathematical functions and transformswith low complexity. The algorithm at the same time, ensures no drastic pay offin terms of encryption quality. This renders the algorithm with promising scopefor real time applications and easy hardware implementation. MATLAB simulationof the algorithm establishes its high quality of encryption in terms ofelevated entropy values and negligible correlation of the encrypted data withthe original. Simulation results also show high sensitivity to slight variationin keys ensuring high security.

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