Chaotic Image Encryption Based on Running-Key Related to Plaintext

Table 1

Correlation of adjacent pixels.

	Correlation
	Horizontal	Vertical	Diagonal
Lena image	0.9432	0.9730	0.8887
Rand image	0.0122	0.0161	−0.0141
Lena cipher image	−0.0278	−0.0065	−0.0074