On Thu, Oct 17, 2013 at 12:56:01PM -0400, grarpamp wrote: > Problem is, apparently no one is solving it, so round and round > it goes... physical entropy, rdrand, reboot state, prng code. > I'd guess that with good sources, today's prng code is sufficiently > strong and at least some unix systems do save state across reboot. > Now if someone would just sell a completely open discrete logic > serial port hw entropy source for under $50... that would end
There's an ARM system in there: http://www.entropykey.co.uk/ but in principle you can resurrect something like that, or wait until the company sees fit to sell that product again. > a lot of the talk. Even with a more costly radiation source rather You don't need radiation. 12 USD USB SDR can sample 1.5 Msamples/s at 8 bit, and http://www.maximintegrated.com/app-notes/index.mvp/id/3469 is as simple as it gets, and is amplifies effectively quantum noise. I'm not sure how complex http://www.realtek.com.tw/products/productsView.aspx?Langid=1&PFid=35&Level=4&Conn=3&ProdID=257 is, but you can certainly decap a representative sample from each lot to validate it. > than other phenomena you'd still likely make good profit in quantity > from China at that price. Sell other/cheaper/slower phenomena > for a little less and make even more profit. Seal some up in > a pretty wrapper and call it the corporate version for $1500. Seems like a decent business idea.
