Table 1 NIST statistical test results.

From: Anticounterfeiting tags based on randomly oriented MoSx clusters enabled by capillary and Marangoni flow

NIST statistical test

p-value

Proportion

Result

Frequency

0.115387

1

Pass

Block frequency

0.115387

1

Pass

Runs

0.153763

0.95

Pass

Longest run

0.115387

0.95

Pass

Serial

0.062821

1

Pass

 

0.085587

1

Pass

Approximate entropy

0.115387

0.95

Pass

Cumulative sums (Forward)

0.153763

1

Pass

Cumulative sums (Reverse)

0.085587

1

Pass

  1. NIST statistical tests were conducted on 20 sequences (20 MoSx tags), each consisting of 128 bits (for a total of 2560 bits). The chi-squared (χ2) distribution was used to assess the goodness-of-fit by comparing the p-value distribution with an assumed distribution. The bitstream is considered random only if the p-value exceeds 0.01. For this test, the total result of the proportion over 19/20, is regarded as a pass.
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