A New Image Encryption Scheme Based on Hybrid Chaotic Maps

Table 1

Comparison between the classical and proposed quadratic maps. Note: MLE is Maximal Lyapunov Exponent.

Chaotic map	Equation	Chaotic parameter range	MLE
Classical quadratic map [19]			0.6923
The first proposed chaotic map		a = 1.4, b = 0.3,	1.225
The second proposed chaotic map			3.317
The third proposed chaotic map		, , to ∞	4.499
The fourth proposed chaotic map		a = 1.5, , to ∞	3.091