-- 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 --------------------------------------------------------------------- The Cryptography Mailing List Unsubscribe by sending "unsubscribe cryptography" to [EMAIL PROTECTED]