Abstract
The present work sets out to present a new secure and fast image cryptosystem based on two-dimensional non-uniform fast Fourier transform (2D-NUFFT) so as to improve the security level of system data. Taking into consideration the benefits of its image compression properties, the Discrete Wavelet Transform (DWT) in a two-dimensional index is introduced and implemented in the novel cryptosystem to decrease the global time-computation and to Boost Data Security Level. The Singular Value Decomposition (SVD) as well as the randomization process, are performed with 2D-NUFFT to corroborate the efficiency and robustness of the proposed algorithms in contrast to the conventional one investigated in recent works apropos of accuracy, stability and time efficiency.