An Image Encryption Scheme Based on Lorenz Hyperchaotic System and RSA Algorithm

Table 3

Histogram uniformity evaluation based on the chi-squared test.

Image	Lena	Baboon	Peppers	Boat	Clock
Plain image	158349.36	187356.57	120165.79	383969.69	217971.39
Cipher image	254.7051	246.5801	247.5566	246.5527	263.8195
Pass or not	Pass	Pass	Pass	Pass	Pass