A Hybrid Chaotic and Number Theoretic Approach for Securing DICOM Images

Table 4

NPCR and UACI of encrypted image samples with slightly different keys.

DICOM images	Encrypted DICOM images	Key values	NPCR (in %)	UACI (in %)
D_1	ED_1	, , , = 0.6313,	99.624	33.4712
	E′D_1	, , , ,
D_2	ED_2	, , , ,	99.1382	33.6820
	E′D_2	, , , ,
D_3	ED_3	, , , ,	99.5777	33.0944
	E′D_3	, , , ,
D_4	ED_4	, , , ,	99.236	33.2985
	E′D_4	, , , ,
D_5	ED_5	, , , ,	99.6076	33.9995
	E′D_5	, , , ,
D_6	ED_6	, , , ,	99.5822	33.5912
	E′D_6	, , , ,
D_7	ED_7	, , , ,	99.8809	33.4301
	E′D_7	, , , ,
D_8	ED_8	, , , ,	99.8947	33.2369
	E′D_8	, , , ,
D_9	ED_9	, , , ,	99.8596	33.4612
	E′D_9	, , , ,