A New Multistage Encryption Scheme Using Linear Feedback Register and Chaos-Based Quantum Map

Table 10

Comparison of statistical results of the suggested scheme with existing work.

Features	Proposed	Ref. [32]	Ref. [11]	Ref. [12]	Ref. [13]
Key space
Diagonal correlation
R	0.0001	−0.0060	−0.0026	0.0091	0.0167
G	−0.0021	0.0127	−0.0039	−0.0012	0.0171
B	0.0003	−0.0041	0.0012	0.0089	0.0170
Horizontal correlation
R	−0.0031	−0.0033	−0.0029	0.0681	0.0021
G	−0.0011	−0.0067	−0.0032	0.0682	0.0023
B	0.0003	−0.0005	0.0040	0.0683	0.0024
Vertical correlation
R	−0.0001	0.0055	0.0013	−0.0081	0.0017
G	0.0031	−0.0048	−0.0032	0.0040	0.0013
B	−00019	−0.0016	−0.0018	−0.0039	0.0011
NPCR
R	99.60	99.51	99.60	99.87	99.57
G	99.62	99.53	99.61	99.88	99.56
B	99.58	99.54	99.61	99.89	99.57
UACI
R	33.49	33.37	33.56	33.47	33.81
G	33.48	33.39	33.45	33.49	33.83
B	34.62	33.37	33.49	33.48	33.81
Information entropy
R	7.9990	7.9992	7.9973	7.9953	7.9874
G	7.9992	7.9992	7.9969	7.9953	7.9871
B	7.9993	7.9992	7.9971	7.9953	7.9866