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Mike Edward Moras
Mike Edward Moras
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RNG failing Restart Tests by NIST SP800-22?

I have data sample of 1,000,000 bytes generated by a hardware RNG. The device is certified by ENT test suite, NIST SP800-22, DIE HARDER and TestU01.

I have tested my sample by SP800-90B_EntropyAssessment (github.com/usnistgov/SP800-90B_EntropyAssessment). Minimum Entropy Estimate is 7.88237 after which I run Restart Tests. 

My sample fails at Restart Testing and the program displays

Validation Failed, No Entropy Estimate Awarded.

“Analysis and Improvement of Entropy Estimators in NIST SP 800-90B“ (PDF) says

Randomness has three features: unpredictability, unbiasedness and non-repeatability and and the non-repeatability is validated by restart tests.

I want to know if my RNG is failing Restart Tests, does it mean it offers no entropy at all?

RNG failing Restart Tests by NIST SP800-22

I have data sample of 1,000,000 bytes generated by a hardware RNG. The device is certified by ENT test suite, NIST SP800-22, DIE HARDER and TestU01.

I have tested my sample by SP800-90B_EntropyAssessment (github.com/usnistgov/SP800-90B_EntropyAssessment). Minimum Entropy Estimate is 7.88237 after which I run Restart Tests. My sample fails at Restart Testing and the program displays

Validation Failed, No Entropy Estimate Awarded.

“Analysis and Improvement of Entropy Estimators in NIST SP 800-90B“ (PDF) says

Randomness has three features: unpredictability, unbiasedness and non-repeatability and and the non-repeatability is validated by restart tests.

I want to know if my RNG is failing Restart Tests, does it mean it offers no entropy at all?

RNG failing Restart Tests by NIST SP800-22?

I have data sample of 1,000,000 bytes generated by a hardware RNG. The device is certified by ENT test suite, NIST SP800-22, DIE HARDER and TestU01.

I have tested my sample by SP800-90B_EntropyAssessment (github.com/usnistgov/SP800-90B_EntropyAssessment). Minimum Entropy Estimate is 7.88237 after which I run Restart Tests. 

My sample fails at Restart Testing and the program displays

Validation Failed, No Entropy Estimate Awarded.

“Analysis and Improvement of Entropy Estimators in NIST SP 800-90B“ (PDF) says

Randomness has three features: unpredictability, unbiasedness and non-repeatability and and the non-repeatability is validated by restart tests.

I want to know if my RNG is failing Restart Tests, does it mean it offers no entropy at all?

made it a bit more readable and correctly linked up things
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Mike Edward Moras
Mike Edward Moras
  • 18.2k
  • 12
  • 88
  • 242

I have data sample of 1,000,000 bytes generated by a hardware RNG. The device is certified by ENT test suite, NIST SP800-22, DIE HARDER and TestU01. 

I have tested my sample by [1]SP800-90B_EntropyAssessment SP800-90B_EntropyAssessment(github.com/usnistgov/SP800-90B_EntropyAssessment). Minimum Entropy Estimate is 7.882377.88237 after which I run Restart Tests. My sample fails at Restart Testing and the program displays

Validation Failed, No Entropy Estimate Awarded.

“Analysis and Improvement of Entropy Estimators in NIST SP 800-90B“ Validation Failed, No Entropy Estimate Awarded. [2](PDF) says Randomness has three features: unpredictability, unbiasedness and non-repeatability and and the non-repeatability is validated by restart tests.

Randomness has three features: unpredictability, unbiasedness and non-repeatability and and the non-repeatability is validated by restart tests.

I want to know if my RNG is failing Restart Tests, does it mean it offers no entropy at all?

[1] https://github.com/usnistgov/SP800-90B_EntropyAssessment) [2] Analysis and Improvement of Entropy Estimators in NIST SP 800-90B

I have data sample of 1,000,000 bytes generated by a hardware RNG. The device is certified by ENT test suite, NIST SP800-22, DIE HARDER and TestU01. I have tested my sample by [1] SP800-90B_EntropyAssessment. Minimum Entropy Estimate is 7.88237 after which I run Restart Tests. My sample fails at Restart Testing and the program displays Validation Failed, No Entropy Estimate Awarded. [2] says Randomness has three features: unpredictability, unbiasedness and non-repeatability and and the non-repeatability is validated by restart tests. I want to know if my RNG is failing Restart Tests, does it mean it offers no entropy at all?

[1] https://github.com/usnistgov/SP800-90B_EntropyAssessment) [2] Analysis and Improvement of Entropy Estimators in NIST SP 800-90B

I have data sample of 1,000,000 bytes generated by a hardware RNG. The device is certified by ENT test suite, NIST SP800-22, DIE HARDER and TestU01. 

I have tested my sample by SP800-90B_EntropyAssessment (github.com/usnistgov/SP800-90B_EntropyAssessment). Minimum Entropy Estimate is 7.88237 after which I run Restart Tests. My sample fails at Restart Testing and the program displays

Validation Failed, No Entropy Estimate Awarded.

“Analysis and Improvement of Entropy Estimators in NIST SP 800-90B“ (PDF) says

Randomness has three features: unpredictability, unbiasedness and non-repeatability and and the non-repeatability is validated by restart tests.

I want to know if my RNG is failing Restart Tests, does it mean it offers no entropy at all?

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R. Sam
R. Sam
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RNG failing Restart Tests by NIST SP800-22

I have data sample of 1,000,000 bytes generated by a hardware RNG. The device is certified by ENT test suite, NIST SP800-22, DIE HARDER and TestU01. I have tested my sample by [1] SP800-90B_EntropyAssessment. Minimum Entropy Estimate is 7.88237 after which I run Restart Tests. My sample fails at Restart Testing and the program displays Validation Failed, No Entropy Estimate Awarded. [2] says Randomness has three features: unpredictability, unbiasedness and non-repeatability and and the non-repeatability is validated by restart tests. I want to know if my RNG is failing Restart Tests, does it mean it offers no entropy at all?

[1] https://github.com/usnistgov/SP800-90B_EntropyAssessment) [2] Analysis and Improvement of Entropy Estimators in NIST SP 800-90B