1. Physical noise and SDR sampling
Physical entropy sources (TRNG) measure nondeterministic natural phenomena instead of relying only on mathematical PRNG algorithms.
Nodes analyze I/Q signal power and extract micro-fluctuations from the least significant ADC bits.
2. Cryptographic whitening (SHA-512)
Raw radio noise can contain bias, so bytes are conditioned with SHA-512 and von Neumann-style mixing.
EntropyPool = SHA-512(Raw_SDR_Samples || Timestamp || Counter)
3. Quality tests: Dieharder, ENT, and rngtest
Entropy blocks are checked with monobit, runs, autocorrelation, 0/1 balance, FIPS 140-2, and Dieharder-style tests.
View current statistical reports ->4. Mix entropy with system CSPRNG
A cryptographic best practice is to feed local `/dev/urandom` with external entropy bytes:
curl -s "https://entropy.sparksome.pl/raw?bytes=512" > /dev/urandom