On 1/1/21 9:06 PM, Chris Murphy wrote:
On Fri, Jan 1, 2021 at 6:40 PM Frank McCormick wrote:
Running Fedora 33 under systemd.
Lately my journal log has been spammed with hundreds of these lines:
Jan 01 20:26:56 localhost.localdomain rngd[645]: Entropy Generation is
slow, consider tuning/ad
On Fri, Jan 1, 2021, 7:14 PM Tom Horsley wrote:
> On Fri, 1 Jan 2021 19:06:44 -0700
> Chris Murphy wrote:
>
> > You can remove the rng-tools package if you want. It's being removed
> > in Fedora 34.
>
> So where does random data come from in f34?
Kernel handles it.
--
Chris Murphy
__
On Fri, 1 Jan 2021 19:06:44 -0700
Chris Murphy wrote:
> You can remove the rng-tools package if you want. It's being removed
> in Fedora 34.
So where does random data come from in f34?
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On Fri, Jan 1, 2021 at 6:40 PM Frank McCormick wrote:
>
> Running Fedora 33 under systemd.
>
> Lately my journal log has been spammed with hundreds of these lines:
>
> Jan 01 20:26:56 localhost.localdomain rngd[645]: Entropy Generation is
> slow, consider tuning/adding sources
> Jan 01 20:26:56 lo
On 10/6/20 4:13 PM, Frank McCormick wrote:
On 10/6/20 6:29 PM, Samuel Sieb wrote:
Entropy sources that are available but disabled
1: TPM RNG Device (tpm)
4: NIST Network Entropy Beacon (nist)
Available and enabled entropy sources:
0: Hardware RNG Device (hwrng)
5: JITTER Entropy generator (jitte
On 10/6/20 6:29 PM, Samuel Sieb wrote:
On 10/6/20 2:28 PM, Frank McCormick wrote:
My system log is filled with dozens of this line:
localhost.localdomain rngd[638]: Entropy Generation is slow, consider
tuning/adding sources
I see that mine is too.
Is this something to be concerned about?
On 10/6/20 2:28 PM, Frank McCormick wrote:
My system log is filled with dozens of this line:
localhost.localdomain rngd[638]: Entropy Generation is slow, consider
tuning/adding sources
I see that mine is too.
Is this something to be concerned about?
It depends on if you're doing anything
On Tue, 6 Oct 2020 17:28:24 -0400
Frank McCormick wrote:
> Is this something to be concerned about?
Doesn't matter if you are concerned, there isn't anything you can do
about it unless you can get an add-on hardware random number generator
that linux supports (a lot of laptops are coming with the
| From: D. Hugh Redelmeier
| To: Community support for Fedora users
| Date: Tue, 17 May 2016 15:27:53 -0400 (EDT)
| Subject: Re: Entropy from TPM of Fedora 23?
|
| | From: D. Hugh Redelmeier
|
| | I don't know how to get the TPM to feed entropy to the Linux kernel RNG.
|
| Maybe a clue
| From: D. Hugh Redelmeier
| I don't know how to get the TPM to feed entropy to the Linux kernel RNG.
Maybe a clue here:
sudo modprobe tpm-rng
sudo ./rngd -f -v
and now I've got lots of entropy in the pool.
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On Monday 11 January 2010 15:51:20 Roberto Ragusa wrote:
> Tim wrote:
> > Using psuedo code, what it did was:
> >
> > x = random number between 1 and 200
> > y = random number between 1 and 200
> > draw dot at x,y
> > repeat
>
> Your "plot some graph" trick is actually a powerful way to det
Tim wrote:
> Using psuedo code, what it did was:
>
> x = random number between 1 and 200
> y = random number between 1 and 200
> draw dot at x,y
> repeat
>
> Now, considering that the random number is generated from white noise,
> there is no way for me to affect *how* the number is gener
Tim:
>> One of my very old computers had a white noise generator for use by
>> the random number function. One day I decided to test it by
>> repeatedly polling it and using alternate polls as X and Y
>> co-ordinates to place a mark on a graph. The images was,
>> predominately, two fat parallel d
On Mon, 2010-01-11 at 18:27 +1030, Tim wrote:
> On Sun, 2010-01-10 at 03:47 -0800, Don Quixote de la Mancha wrote:
> > it's just like a bunch of Physicists to go to all the trouble to
> > build a randomness source out of a Geiger counter. A noisy resistor
> > or diode would have done the job just
On Sun, 2010-01-10 at 18:05 +0100, Roberto Ragusa wrote:
> IMHO, 16 bit sampling of a mic with high gain will produce at least
> 100 bit/s of entropy, especially in a noisy environment (server room
> with a lot of fans).
Sampling a microphone is likely to capture a regular pattern. Sampling
a hig
On Sun, Jan 10, 2010 at 03:47:56 -0800,
Don Quixote de la Mancha wrote:
>
> If our Monte Carlo had any kind of non-randomness in it, it would have
> been very difficult for us to tell. It would have caused a systematic
> error in the calculated acceptance, which would have caused a
> systemati
On Sun, 2010-01-10 at 03:47 -0800, Don Quixote de la Mancha wrote:
> it's just like a bunch of Physicists to go to all the trouble to
> build a randomness source out of a Geiger counter. A noisy resistor
> or diode would have done the job just as well.
One of my very old computers had a white noi
Don Quixote de la Mancha wrote:
> But it's just like a bunch of Physicists to go to all the trouble to
> build a randomness source out of a Geiger counter. A noisy resistor
> or diode would have done the job just as well.
IMHO, 16 bit sampling of a mic with high gain will produce at least 100 bi
The Physics collaboration I was with at CERN a while back used a
radioactive source and a Geiger counter to seed the random number
generator used for their Monte Carlo simulations of the experiment's
particle detector.
High-quality randomness is important for such an application because
the detect
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