New answers tagged randomness
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Accepted
Walsh-Hadamard transform in randomness testing
You need to read about WHT. It is just a fourier transform obtained for $\pm 1$ valued sequences. A fourier transform is usually normalized in different ways. Some authors like to divide by $2^n$ (...
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3
votes
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Frequency Monobits Test
Since the test uses $X_k=\pm 1$ as its symbols, it is statistically based on the idea of a simple random walk with unknown bias (if $p=1/2$ then the bias is zero).
By the Central Limit Theorem, for an ...
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1
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Logic Flaw, why cant you use randomness to seed more randomness?
Suppose you take your 256 bits of handwavium "perfectly random data" and use it to seed a handwavium "perfect cryptographic seed expansion algorithm", such as the SHAKE XOF -- but ...
- 518
1
vote
Accepted
Runs and Autocorrelation test
For the runs test example on page 182-183, partition the sequence into blocks and gaps without a block appearing next to a block and without a gap appearing next to a gap. Thus
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