Quantum RNG

[James A. Donald]

     --
Andrea Pasquinucci wrote:
 > About RNG, does someone in the list have any comment,
 > ideas on this
 >
 > http://www.idquantique.com/products/quantis.htm
 >
 > "Quantis is a physical random number generator
 > exploiting an elementary quantum optics process.
 > Photons - light particles - are sent one by one onto a
 > semi-transparent mirror and detected. The exclusive
 > events (reflection - transmission) are associated to
 > "0" - "1" bit values."

That is doing it the hard way.  The easy way is to
amplify shot noise or Johnson noise and feed it into a
shift register, with the output of the shift register
being mixed back in with the noise input, so that the
shift register contains a constant pool of continually
stirred entropy with fresh entropy being continually
stirred in.

When people use an microphone input with no microphone
as their major entropy source, they are using Johnson
noise as their entropy source, and doing the stirring in
software.

     --digsig
          James A. Donald
      6YeGpsZR+nOTh/cGwvITnSR3TdzclVpR0+pr3YYQdkG
      2PU8nEsxKqJuKTcJtk5EoKYjFF0Uh/9Xr5sJ6nxm
      4YaYrOcfMCcakjCz0TyfilHAYuMSbGUG2qHHdxLBA

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