Pseudorandom Number Generator Based on Three Kinds of Four-Wing Memristive Hyperchaotic System and Its Application in Image Encryption

Table 2

The results of NIST test suite.

Statistical test	Proportion		Results
Frequency	0.9667	0.074177	Success
Block Frequency	0.9917	0.585209	Success
Cumulative Sums	0.9750	0.051391	Success
Runs	0.9917	0.980883	Success
Longest Run	0.9667	0.378138	Success
Rank	0.9917	0.213309	Success
Fft	0.9750	0.931952	Success
Nonoverlapping Template	1	0.772760	Success
Overlapping Template	0.9833	0.970538	Success
Universal	0.9833	0.337162	Success
Approximate Entropy	0.9917	0.222869	Success
Random Excursions	1	0.437274	Success
Random Excursions Variant	1	0.706149	Success
Serial	0.9917	0.324180	Success
Linear Complexity	0.9917	0.048716	Success