On Tue, 2008-09-23 at 00:09 -0700, Jon Callas wrote:
A cheap USB camera would make a good source.
The cheaper the better, too. Pull a frame off,
hash it, and it's got entropy, even against a
white background. No lava lamp needed.
I sort of agree, but I feel cautious about recommending
A cheap USB camera would make a good source.
The cheaper the better, too. Pull a frame off,
hash it, and it's got entropy, even against a
white background. No lava lamp needed.
I sort of agree, but I feel cautious about recommending that people
use their holiday snaps. And then post them on
On Sun, Sep 21, 2008 at 01:20:22PM -0400, James Cloos wrote:
IanG == IanG [EMAIL PROTECTED] writes:
IanG Nope, sorry, didn't follow it. What is BOM, SoC, A plug, gerber?
Bill Of Materials -- cost of the raw hardware
System on (a) Chip -- microchip with CPU, RAM, FLASH, etc
USB A Plug
On 09/20/2008 12:09 AM, IanG wrote:
Does anyone know of a cheap USB random number source?
Is $7.59 cheap enough?
http://www.geeks.com/details.asp?invtid=HE-280Bcat=GDT
For that you get a USB audio adapter with mike jack, and
then you can run turbid(tm) to produce high-quality randomness.
Does anyone know of a cheap USB random number source?
As a meandering comment, it would be extremely good for us if we had
cheap pocket random number sources of arguable quality [1].
I've often thought that if we had an open source hardware design of
a USB random number generator ... that cost
IanG == IanG [EMAIL PROTECTED] writes:
IanG I've often thought that if we had an open source hardware design
IanG of a USB random number generator
It should be doable as just a RNG device for a BOM of a few tens of USD.
There are at least of couple of SoCs on the market which advertise USB
IanG == IanG [EMAIL PROTECTED] writes:
IanG Nope, sorry, didn't follow it. What is BOM, SoC, A plug, gerber?
Bill Of Materials -- cost of the raw hardware
System on (a) Chip -- microchip with CPU, RAM, FLASH, etc
USB A Plug -- physical flat-four interface; think USB key drive
gerber
Jerry Leichter wrote:
At ThinkGeek, you can now, for only $6.99, buy yourself a USB-powered
mini lava lamp (see http://www.thinkgeek.com/gadgets/lights/7825/).
All you need is some way to watch the thing - perhaps a USB camera -
and some software to extract random bits. (This isn't *really*
The Lava Lamp Random Number generator (at http://www.lavarnd.org/)
generates true random numbers from the images of a couple of lava
lamps. Of course, as a source of randomness for cryptographic
purposes, it's useless because it's visible to everyone (though I
suppose it might be used for
