[Cryptography] TRNG review: Arduino based TRNGs

Stephen Wood smwood4 at gmail.com
Tue Jan 12 12:15:19 EST 2016


Thanks, Bill. This is a fun write-up.

> The most popular technique for generating true random data is to do what
TrueRandom does, and drive a voltage onto pin 0, and measure it with the
8-bit ADC.  While sometimes this generates unpredictable data, the scatter
plots show scary correlations, and the one thing we know it is not
measuring is thermal noise.

Is there any way you could mitigate this by diversifying board pins, for
example read from pin 0 and 5 and XOR the data together?
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