[Noisebridge-discuss] Group order of Entropy Keys: hardware random number generators

[Jonathan Foote]

If my suspicions are correct, it wouldn't be too hard to hack up an
open-hardware version.

I'm guessing the entropykey is nothing more than a little amp for
thermal (resistor) noise into an ADC, followed by a whitening
algorithm. And some kind of device driver to pipe it into /dev/random.

Of course we could make a radioactive one with Mike Kan's transistor
alpha detector trick (pop the top off an old TO-3 can transistor), or
make an imaging-based spinthariscope, which would be cooler!


On Tue, Jun 19, 2012 at 9:31 PM, Martin Bogomolni <martinbogo at gmail.com> wrote:
> I own two of these things, and they are truly awesome when it comes to
> generating entropy for everything from SSL and SSH sessions, to
> handling GPG mail.
>
> Great stuff.
>
> On Tue, Jun 19, 2012 at 8:30 PM, Tom <noisebridge at flamsmark.com> wrote:
>> I'm planning on buying one or more Entropy Keys: hardware random number
>> generators which connect via USB.
>>
>> http://www.entropykey.co.uk/
>>
>> The site has a great technical description, and there are Debian and Ubuntu
>> packages (and source tarballs) ready to go.
>>
>> They have to be ordered from the UK, which makes shipping exciting, and
>> they're cheaper if you buy a couple at a time.
>>
>> 1 key: £36ea
>> 5 keys: £32ea
>> 25 keys: £29ea
>>
>> If you're interested in getting one get in touch with me off-list *before
>> next week's meeting*. I'm planning on getting the logistics sorted out this
>> week, and placing an order on Wednesday morning.
>>
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