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Re: OneRNG: Open Hardware Random Number Generator

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On Tue, 28 Oct 2014, Tonton Th wrote:

> On 2014-10-28, Oregonian Haruspex <bob_davis_retired@yahoo.com> wrote:
>>
>>> http://onerng.info/
>>>
>>>    OneRNG collects entropy from an avalanche diode circuit, and from a
>>>    channel-hopping RF receiver. It even has a "tinfoil hat" to prevent RF
>>>    interference - you can remove the hat in order to visually verify the
>>>    components being used.
>>
>> Seems neat but there are already many ways to gather entropy from sound
>> cards and other parts of the system, which satisfy randomness.  If
>
>   No audio input on a RasPi.
>
But there is bare I/O, and isn't some of it A/D?

I remember one electronic music project to get a random voltage used a 
reverse biased diode (which generates white noise), and then you sample 
it,  the voltage being different each time.  I can't remember what it was 
clocked with, but since the white noise was random, it should be fine.

Random is random, so long as you start with something that is random 
(white noise from some "natural" source like that diode or on a radio 
frequency with no manmade signal, it will be random.  This contrasts with 
the pseudo-random source often seen in computers, a long shift register 
with appropriate feedback, so it can seem like random, except at some 
point it repeats. LOng enough, and it's often good enough for many 
purposes, but not high security.

   Michael

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Thread

OneRNG: Open Hardware Random Number Generator Rich <rich@example.invalid> - 2014-10-28 10:15 +0000
  Re: OneRNG: Open Hardware Random Number Generator Oregonian Haruspex <bob_davis_retired@yahoo.com> - 2014-10-28 15:17 -0700
    Re: OneRNG: Open Hardware Random Number Generator Tonton Th <tTh@nowhere.invalid> - 2014-10-28 22:34 +0000
      Re: OneRNG: Open Hardware Random Number Generator Michael Black <et472@ncf.ca> - 2014-10-28 19:15 -0400
        Re: OneRNG: Open Hardware Random Number Generator Oregonian Haruspex <bob_davis_retired@yahoo.com> - 2014-10-28 18:43 -0700
      Re: OneRNG: Open Hardware Random Number Generator Christian Neukirchen <chneukirchen@gmail.com> - 2014-10-29 15:41 +0100
        Re: OneRNG: Open Hardware Random Number Generator scott@alfter.diespammersdie.us (Scott Alfter) - 2014-10-29 18:11 +0000
        Re: OneRNG: Open Hardware Random Number Generator Michael Black <et472@ncf.ca> - 2014-10-29 16:06 -0400
          Re: OneRNG: Open Hardware Random Number Generator scott@alfter.diespammersdie.us (Scott Alfter) - 2014-10-30 17:38 +0000
            Re: OneRNG: Open Hardware Random Number Generator Marko Rauhamaa <marko@pacujo.net> - 2014-10-30 20:39 +0200
              Re: OneRNG: Open Hardware Random Number Generator scott@alfter.diespammersdie.us (Scott Alfter) - 2014-11-03 20:08 +0000
                Re: OneRNG: Open Hardware Random Number Generator Marko Rauhamaa <marko@pacujo.net> - 2014-11-03 22:12 +0200
  Re: OneRNG: Open Hardware Random Number Generator Sylvia Else <sylvia@not.at.this.address> - 2014-10-31 16:52 +1100
    Re: OneRNG: Open Hardware Random Number Generator nobody@nowhere.invalid (natp) - 2014-11-01 01:52 +0000

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