3-Image Bit-Level Encryption Algorithm Based on 3D Nonequilateral Arnold Transformation and Hyperchaotic System

Table 2

CCAP in original and encrypted images.

	Original images			Our algorithm			Ref. [7]
	Lena	Liftingbody	Barbara	R	G	B	R	G	B
Horizontal	0.9718	0.9634	0.9278	−−0.0021	0.0014	−0.0016	0.0027	0.0034	0.0046
Vertical	0.9442	0.9479	0.8869	−0.0011	−0.0002	0.0005	−0.0013	−0.0034	0.0038
Diagonal	0.9181	0.9194	0.8697	−0.0017	0.0015	0.0004	−0.0039	−0.0021	0.0013