[147124] in cryptography@c2.net mail archive
Re: [Cryptography] Perfection versus Forward Secrecy
daemon@ATHENA.MIT.EDU (Tony Arcieri)
Sat Sep 14 16:22:54 2013
X-Original-To: cryptography@metzdowd.com
In-Reply-To: <20130913060838.GC10405@leitl.org>
From: Tony Arcieri <bascule@gmail.com>
Date: Sat, 14 Sep 2013 11:49:50 -0700
To: Eugen Leitl <eugen@leitl.org>
Cc: Crypto <cryptography@metzdowd.com>
Errors-To: cryptography-bounces+crypto.discuss=bloom-picayune.mit.edu@metzdowd.com
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On Thu, Sep 12, 2013 at 11:08 PM, Eugen Leitl <eugen@leitl.org> wrote:
> I do not think that the spooks are too far away from open research in
> QC hardware. It does not seem likely that we'll be getting real QC
> any time soon, if ever.
I don't think the spooks are ahead of the public either, and I really doubt
the NSA has a large quantum computer.
We still haven't seen quantum computers built yet which can truly rival
their conventional electronic brethren, especially if you look at it from a
cost perspective. DWave computers are interesting from a novelty
perspective, but not really ready to replace existing computers, even for
highly specialized tasks like running Shor's algorithm.
Nevertheless, if you've been following the trends in quantum computers over
the last few years, they are getting larger, and DWave is an example of
them moving out of the labs and turning into something you can buy.
I wouldn't be surprised to see a large quantum computer built in the next
two decades.
--
Tony Arcieri
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<div dir=3D"ltr">On Thu, Sep 12, 2013 at 11:08 PM, Eugen Leitl <span dir=3D=
"ltr"><<a href=3D"mailto:eugen@leitl.org" target=3D"_blank" onclick=3D"w=
indow.open('https://mail.google.com/mail/?view=3Dcm&tf=3D1&to=
=3Deugen@leitl.org&cc=3D&bcc=3D&su=3D&body=3D','_bl=
ank');return false;">eugen@leitl.org</a>></span> wrote:<br>
<div class=3D"gmail_extra"><div class=3D"gmail_quote"><blockquote class=3D"=
gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-=
left:1ex"><div class=3D"im"><span style=3D"color:rgb(34,34,34)">I do not th=
ink that the spooks are too far away from open research in</span><br>
</div>
QC hardware. It does not seem likely that we'll be getting real QC<br>
any time soon, if ever.</blockquote><div><br></div><div>I don't think t=
he spooks are ahead of the public either, and I really doubt the NSA has a =
large quantum computer.</div><div><br></div><div>We still haven't seen =
quantum computers built yet which can truly rival their conventional electr=
onic brethren, especially if you look at it from a cost perspective. DWave =
computers are interesting from a novelty perspective, but not really ready =
to replace existing computers, even for highly specialized tasks like runni=
ng Shor's algorithm.</div>
<div><br></div><div>Nevertheless, if you've been following the trends i=
n quantum computers over the last few years, they are getting larger, and D=
Wave is an example of them moving out of the labs and turning into somethin=
g you can buy.</div>
<div><br></div><div>I wouldn't be surprised to see a large quantum comp=
uter built in the next two decades.</div></div><div><br></div>-- <br>Tony A=
rcieri<br>
</div></div>
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