An Efficient Lightweight Image Encryption Scheme Using Multichaos

Table 1

Correlation coefficient values for Pepper image of size .

	Plaintext image			Encrypted image
	Directions			Directions
	HC	DC	VC	HC	DC	VC
Ideal	1	1	1	−1	−1	−1
Pepper	0.9635	0.9564	0.9663	−0.0033	0.0011	0.007
Ref. [28]	—	—	—	0.0075	0.0012	0.0049
Ref. [29]	—	—	—	0.0005	0.0008	0.0011
Ref. [30]	—	—	—	0.0117	0.0026	0.0010
Ref. [31]	—	—	—	0.0043	0.0054	0.0072
Ref. [32]	—	—	—	0.0108	0.0181	0.0061
Ref. [33]	—	—	—	0.0032	0.0042	0.0018
Ref. [34]	—	—	—	0.0204	−0.0174	0.0231
Ref. [35]	—	—	—	0.0053	−0.0027	0.0016

HC : Horizontally correlated; DC : Diagonally correlated; VC : Vertically correlated.