[Retracted] Medical Image Encryption Based on 2D Zigzag Confusion and Dynamic Diffusion

Table 12

Test results of the sequences generated by the chaotic system with NIST SP800 suite.

Tests	value ()	Results
Frequency test	0.5356076801062	Pass
Block frequency test	0.2006251972896	Pass
Cusum-forward test	0.1534611103969	Pass
Cusum-reverse test	0.6665945788960	Pass
Runs test	0.5484500143314	Pass
Longest run test	0.2257749928343	Pass
Rank test	0.2495050092582	Pass
FFT test	0.8695796767915	Pass
Nonoverlapping template test	0.1578386990554	Pass
Overlapping template test	0.8425140482030	Pass
Universal test	0.3708348754012	Pass
Approximate entropy test	0.5610349492218	Pass
Random-excursion test (x = -1)	0.7857937272818	Pass
Random-excursion variant test (x = 1)	0.2084575927756	Pass
Serial1 test	0.1392589354394	Pass
Serial2 test	0.5800257861316	Pass
Linear complexity test	0.4039596243759	Pass