Cryptanalysis and Improvement of Chaos-Based Image Encryption Scheme with Circular Inter-Intra-Pixels Bit-Level Permutation

Table 3

Execution time.

Scheme	Image size
	Ref. [21]	0.1895	0.3414	1.5026	9.3228
Ref. [22]	0.3125	0.5029	2.2335	11.7568
Ref. [23]	0.1605	0.2921	1.3528	8.2878
Original	0.2379	0.4261	2.0396	11.1652
Improved	0.1811	0.3384	1.4918	9.2796