A Lightweight Image Encryption Algorithm Based on Message Passing and Chaotic Map

Table 5

The plain-image sensitivity test.

Pixels		(1, 1)	(7, 124)	(81, 243)	(160, 74)	(215, 12)	(255, 255)
NPCR	Lena	0.996094	0.995789	0.996170	0.996094	0.995956	0.995865
	Peppers	0.996231	0.996082	0.995735	0.996017	0.996010	0.996246
UACI	Lena	0.334303	0.334879	0.334736	0.334289	0.333824	0.334528
	Peppers	0.334005	0.334987	0.335786	0.333705	0.334750	0.334005