Re: OneRNG: Open Hardware Random Number Generator

From	Marko Rauhamaa <marko@pacujo.net>
Newsgroups	comp.misc
Subject	Re: OneRNG: Open Hardware Random Number Generator
Date	2014-10-30 20:39 +0200
Organization	A noiseless patient Spider
Message-ID	<87y4rx4d1w.fsf@elektro.pacujo.net> (permalink)
References	<CDQMAMXHXef8qCbpaJtDabMN@dont-email.me> <slrnm506fs.3aj.tTh@hangartistique.cispeo.fr> <87a94f0wgu.fsf@gmail.com> <alpine.LNX.2.02.1410291605340.4171@darkstar.example.org> <m2tt1s$hc8$1@dont-email.me>

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scott@alfter.diespammersdie.us (Scott Alfter):

> The difference between /dev/random and /dev/urandom is that
> /dev/random blocks when available entropy runs out. /dev/urandom
> doesn't; if demand exceeds supply, it'll keep producing
> pseudorandomness, but with less entropy.

/dev/random is a scarce resource. It's too bad /dev/urandom can easily
deplete all entropy. It would be nice to be able to reserve a level of
entropy for /dev/random regardless of how /dev/urandom is used.

> If /dev/random isn't backed by hardware, other entropy sources are
> considered: time between keystrokes, mouse movement, disk interrupts,
> etc.

That sounds like hardware to me.

Anyway, a standard, high-yield, high-quality entropy source would be a
great asset.


Marko

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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