1k views

Free software for randomness test [duplicate]

I have a sequence of integers between 0 to 100. Is there any free software like Sage, where I can test randomness of this sequence? I have Linux machine. To clarify: I have huge data set. Actually ...
41 views

How to determine how good our generator of random numbers is [duplicate]

I am using SecureRandom class in java with default constructor and after i run it four times and each times i will take back 4 "supposed highly secured random numbers" . First run : -35 -43 -127 12 ...
2k views

How to prove the security of the PRNG?

Are there any realties tests or criterias that prove the security of the PRNG? What kind of tests or criteria?
3k views

Interpretation of the results of NIST (p)NRG suite

I have problems interpreting the NIST (sts-2.1.2) suite results. After running the statistics with 100 samples (each sample of 1000000 byte length) a new prng i got this result: ...
882 views

Tests on /dev/urandom entropy can be considered useful or not?

i want to test the entropy of my seed generator: in my case is /dev/urandom. I've read that this operation is non useful because it is the result of CSPRNG (normally not accessible). But what i ...
1k views

How do you test randomness?

Suppose I receive a list of 1 million coinflips, and I want to know how likely it is that the list was randomly generated. My first thought would be to count the number of heads and tails, which ...
897 views

Quality test for an hardware source of randomness

Say that I developed an hardware source of randomness, which I would like to use to seed a cryptographically secure random number generator. How would I go about testing it? Are there standardized ...
711 views

Transforming Gaussian random $[0,1]$ numbers to uniform $[0,255]$

I am not exactly sure if this is for math stackexchange or crypto: A TRNG outputs numbers in $[0,1]$ in a Gaussian distribution. I would like to convert them into uniform random bytes ($[0,255]$) to ...
399 views

Unit testing a library RNG and its seeding for practical security

Suppose I have a cryptography library that provides me with a black-box random number generator that is supposed to be suitable for long-lived key generation. (Under the hood it may be assumed to use ...
147 views

Mathematically / statistically “safe” way to differentiate between crypto and random blob?

I assume the United Kingdom will impose (as opposed to just talk about it) restrictions on crypto software that may be used within it's borders. Me, quite the border clown (yes, I always bring a up ...
250 views

Any famous approach for analyzing the randomness of data?

I'm writing a function that will allow me to analyze the randomness of some input data and return some stats about the probability of this data to be random. Obviously it should be based on two things:...
154 views

Statistical tests for pseudorandom permutations

I'm implementing a format-preserving encryption scheme similar to those described in the literature. I want to sanity test my PRP using some statistical tests like TestU01. However, I'm not sure how ...
182 views

Is my implementation of a PRG at least intuitively secure?

I've devised a PRG using Bezier curves , constructed with Bernstein polynomials, and I was wondering if you guys could help me with some suggestions or constructive criticism. Basicly I take a random ...