You copied the Doc URL to your clipboard.

Restart tests iteration

To verify the values that are used in production, perform the following procedure:

Prerequisites

You can collect the data when the entropy source is ready to produce outputs for real-world use (usually after start-up tests).

Procedure

  1. Run 1000 power cycles of the device, and in each cycle collect 1000 bits.
  2. Create a 1000 by 1000 matrix according to NIST guidance, in which each column is based on the collected bits:
    • Column 1 is based on the collected bits from run number 1.
    • Column 2 is based on the collected bits from run number 2.
    • ...
    • Column 1000 is based on the collected bits from run number 1000.
  3. Analyze the matrix, using the NIST tools, to confirm or refute the TRNG configuration that was calculated in the second iteration.

    Note

    The NIST tools are published on the NIST site.

Next Steps

After verification, update these configuration values in the relevant files of the TRNG driver that you are using.
Was this page helpful? Yes No