Development of an Improved Image Scrambling Encryption Algorithm

Resumen: The fractional-order systems with chaotic behavior have been recently proposed for the image encryption process because of their properties, such as ergodicity, pseudorandomness, sensitivity to initial conditions and control parameters. Furthermore, these systems have introduced an extra security parameter since they are allowed to increase the key space of an encryption scheme. This paper presents an image encryption algorithm based on a fractional-order chaotic system using bit-level permutation and a diffusion operation. The Gr¨unwald-Letnikov definition is used to obtain the numerical solution of the fractional-order system, the Lyapunov exponents, phase plane and bifurcation diagram are also calculated. Simulations results and performance analysis show that the proposed algorithm has a high plaintext sensitivity advantage.

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Jessica Elizabeth Treviño-Ortiz, Cornelio Posadas-Castillo, J. Ramon Rodriguez, Ernesto Zambrano-Serrano & Miguel Angel Platas-Garza. Development of an Improved Image Scrambling Encryption Algorithm. Memorias del Congreso Nacional de Control Automático, pp. 1-6, 2020.

Palabras clave

Encryption, Dynamical Systems, Chaos, Fractional-order Systems, Cybersecurity

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