[Cryptography] Photon beam splitters for "true" random number generation ?

John Ioannidis jayeye at gmail.com
Mon Dec 14 13:11:09 EST 2015

OK, I'll bite.

On Sat, Dec 12, 2015 at 10:06 PM, Henry Baker <hbaker1 at pipeline.com> wrote:
> I'm not a physicist

This is not just a matter of physics. You have a lot of other
components in the system, each introducing noise of various forms
(mostly thermal, but lots of other kinds of noise is introduced by
real electronics).

What's the point anyway? In a real system, there are lots of points
*after* the actual generation of a random event where the bitstream
may be compromised (and certification doesn't mean anything, as the
certifiers are also your usual adversaries, and they are just a way
for lawyers to point fingers at each other anyway, or, like most
certifications, they are marketing hype to get upper-level management
to sign off on expensive purchases.


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