Linked Questions
18 questions linked to/from How to interpret the entropy results for a NIST test file?
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Differences between methods of hardware random number generators
I'm reading about various hardware random number generators which - among others - implement the following approaches:
Analog-to-digital converter noise
Johnson–Nyquist noise
Reverse biased ...
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2
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How do I calculate a password space if the password only has eight alphabetic characters (not case sensitive)
I read this wiki article and saw this formula for random password's information entropy. Also the wiki article mention that the symbol count for non case sensitive is 36. Is there a way I can ...
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Noisiest RF band for random number generation
I've been looking into the difference between PRNGs and proper RNG techniques. One that I particularly like is the idea of tuning a radio to a certain frequency and bandwidth and just listening to the ...
user21708
6
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3
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Hardware RNG Bias
I have generator based on sampled noise (reverse-biased transistor - actually ChaosKey but that's not that important).
The noise source is fed into ADC and sampled with 16bit resolution (2 bytes). ...
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NIST randomness test p values
I have a binary sequence of length $2^{20}$. I am using the NIST statistical test, assess.
What should be taken for ./assess and ...
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3
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2
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Verifying randomness and uniqueness of TRNG output
We need to verify two claims about a set of numbers:
They are random
They are unique in the set (the set is about 200 billion (2TB bin storage))
Supposedly, the numbers were generated by a TRNG (...
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2
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2
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Why should one model an entropy source in order to build a TRNG?
Some assert that a theoretical model of the unconditioned source must be created when building any TRNG. It's believed to be a fundamental requirement. So a few related questions arise:-
What is a "...
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Any concrete examples of the use of NIST Special Publication 800-90B?
This question relates to NIST Special Publication 800-90B, Recommendation for the Entropy Sources used for Random Bit Generation. A copy is available here.
Can anyone supply a pointer to any ...
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4
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How can Bob quickly generate thousands of letters randomly while strongly mitigating the risk of compromise?
Bob wants to generate four thousand English letters for a proper one-time pad without resorting to hand-thrown dice, despite the advantages. Rolling dice would be too slow and tiresome.
Bob does not ...
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2
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3
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Shannon entropy of string, not same in Binary form? But just as good as a password?
This string, "Au+u1hvsvJeEXxky" has a Shannon entropy of 3.75 and a length of 16.
The binary form of the string ( derived from Ascii-table ) is:
01000001 01110101 ...
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2
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Interpretation of (NIST) Non Overlapping Template Matching Test
Regarding the Non-Overlapping Template test, this test normally gives us a bunch of p-values (148 values). I would like to ask that how do we interpret those values into a single p-value for ...
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How can I calculate the entropy of an image? [closed]
I am searching how can I calculate the entropy of a image for a Capture The Flag. I know what is the entropy theory and I tried a pair of things:
Convert the jpg image on binary image and calculate ...
0
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2
answers
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Is a cryptographic key of size $N$ equivalent to $N$ bits of entropy?
Are there any caveats to the claim that a cryptographic key of size $N$ bits and $N$ bits of entropy are equivalent?
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2
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NIST 800-90B /Non-IID track - min-entropy result > 8 for 8-bit symbol
I'm conducting an analyisis of noise sources based on the NIST 800-90B Non-IID track.
Accordingly, I applied the non-iidmain.py script on a datarecord, which delivered the following output:
...
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1
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2
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What are known metrics for TRNG?
I was wondering what the known metrics are for studying the randomness of TRNG (besides NIST tests). For example, for PUFs, there are known metrics such as uniformity, uniqueness, BER, etc.
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