Table 1 NIST SP800-22 test results.

From: A multi-branch feature enhancement-based detection and hierarchical chaotic encryption fusion method for sensitive targets in remote sensing images

No.

Test item

X-sequence P-value

X pass rate

Result

Y-sequence P-value

Y pass rate

Result

1

Frequency

0.276

0.95

Pass

0.911

1.00

Pass

2

Block frequency

0.122

1.00

Pass

0.213

1.00

Pass

3

Cumulative sums F/B

0.122/0.213

0.95

Pass

0.637/0.834

1.00

Pass

4

Runs

0.534

1.00

Pass

0.911

0.95

Pass

5

Longest run

0.350

1.00

Pass

0.534

1.00

Pass

6

Rank

0.350

0.95

Pass

0.049

1.00

Pass

7

FFT

0.964

1.00

Pass

0.276

1.00

Pass

8

Non-overlapping template

0.421

1.00

Pass

0.421

1.00

Pass

9

Overlapping template

0.163

0.95

Pass

0.638

0.95

Pass

10

Universal

0.437

1.00

Pass

0.834

0.95

Pass

11

Approximate entropy

0.911

1.00

Pass

0.049

1.00

Pass

12

Serial

0.534/0.834

1.00

Pass

0.834/0.637

1.00

Pass

13

Linear complexity

0.534

1.00

Pass

0.911

1.00

Pass

14

Random excursions

0.521

1.00

Pass

0.521

1.00

Pass

15

Random excursions variant

0.439

1.00

Pass

0.439

1.00

Pass

  1. The P-values represent typical or average values, and all sub-test pass rates meet the NIST standards.