article
Two-dimensional DFA scaling analysis applied to encrypted images
Registro en:
C. Vargas-Olmos et al, Int. J. Mod. Phys. C 26, 1550093 (2015)
Autor
Vargas Olmos, Cecilia
José Murguía
Ramírez Torres, Marco Tulio
Mejía Carlos, Marcela
Rosu Barbus, Haret-Codratian
H. González-Aguilar
Resumen
"The technique of detrended fluctuation analysis (DFA) has been widely used to unveil scaling properties of many different signals. In this paper, we determine scaling properties in the encrypted images by means of a two-dimensional DFA approach. To carry out the image encryption, we use an enhanced cryptosystem based on a rule-90 cellular automaton and we compare the results obtained with its unmodified version and the encryption system AES. The numerical results show that the encrypted images present a persistent behavior which is close to that of the 1/f-noise. These results point to the possibility that the DFA scaling exponent can be used to measure the quality of the encrypted image content."