Focus on Quantum Crypto in IOP New Journal of Physics issue of 04/09

2009-04-30 Thread Charles McElwain
IOP New Journal of Physics, Volume 11, April, 2009 Editorial page describing focus, with table of contents: http://www.iop.org/EJ/abstract/1367-2630/11/4/045005/ TOC has links to freely downloadable copies of the papers. -- -

unbreakable quantum crypto cracked by a laser

2008-10-24 Thread Steven M. Bellovin
http://technology.newscientist.com/channel/tech/dn14866-laser-cracks-unbreakable-quantum-communications.html?feedId=online-news_rss20 Not surprisingly, it's attacking the implementation, not the physics -- but of course we use implementations to communicate, rather than theories.

Quantum Crypto broken again

2008-10-24 Thread [EMAIL PROTECTED]
A failure in implementation leads to the ability to eavesdrop on a quantum-secrecy based key exchange on 2/3 of the types of quantum equipment used. From: http://technology.newscientist.com/article/dn14866-laser-cracks-unbreakable-quantum-communications.html Makarov and colleagues from

Re: interesting and thought provoking resources on quantum crypto

2007-02-09 Thread Travis H.
thoughts? the resource has to be related to quantum crypto... Well, this company sells quantum cryptography devices: http://www.idquantique.com/home.htm On the other side, any link collection on quantum _cryptanalysis_ wouldn't be complete without Shor: http://www-math.mit.edu/~shor/ I went to one

interesting and thought provoking resources on quantum crypto

2007-02-08 Thread Saqib Ali
. I know what to include in the slides, but i would like to end each session with a link/URL to a interesting and thought provoking resource on quantum crypto. any thoughts? the resource has to be related to quantum crypto saqib http://www.full-disk-encryption.net

Re: quantum crypto rears its head again.

2006-12-14 Thread Jon Callas
On 13 Dec 2006, at 11:57 AM, Perry E. Metzger wrote: I saw this link on Slashdot (and it was also on Ekr's blog): http://hackreport.net/2006/12/13/quantum-cryptography-its-some-kind- of-magiq/ It appears that the quantum crypto meme just won't go away. Bob Gelfond of MagiQ promises us

quantum crypto rears its head again.

2006-12-13 Thread Perry E. Metzger
I saw this link on Slashdot (and it was also on Ekr's blog): http://hackreport.net/2006/12/13/quantum-cryptography-its-some-kind-of-magiq/ It appears that the quantum crypto meme just won't go away. Bob Gelfond of MagiQ promises us that for only $100,000, plus monthly leasing of a dry fiber

[EMAIL PROTECTED]: [IP] more on ARMSTRONG LECTURE on Quantum Crypto and Optical Networks (Forwarded)]]

2005-09-20 Thread Eugen Leitl
- Forwarded message from David Farber [EMAIL PROTECTED] - From: David Farber [EMAIL PROTECTED] Date: Mon, 19 Sep 2005 20:30:36 -0400 To: Ip Ip ip@v2.listbox.com Subject: [IP] more on ARMSTRONG LECTURE on Quantum Crypto and Optical Networks (Forwarded)] X-Mailer: Apple Mail (2.734) Reply

[Colloquium] ARMSTRONG LECTURE on Quantum Crypto and Optical Networks (Forwarded)

2005-09-15 Thread Steven M. Bellovin
Date: Wed, 14 Sep 2005 18:30:22 -0400 (EDT) From: Dan Rubenstein [EMAIL PROTECTED] To: [EMAIL PROTECTED] The Department of Electrical Engineering at Columbia University invites you to attend THE ARMSTRONG MEMORIAL LECTURE Monday, September 19 - 3:00pm Davis Auditorium (Schapiro/Host) Host:

Network World: 10-node Quantum Crypto net under Boston streets

2005-05-20 Thread John Gilmore
NETWORK WORLD NEWSLETTER: OPTICAL NETWORKING 05/04/05 Today's focus: Hooked on photonics By Amy Schurr CAMBRIDGE, MASS. - Chip Elliott is every hacker's worst nightmare. Elliott, principal scientist at BBN Technologies, leads a team building the world's first continuously operating quantum

Quantum crypto firm charts way to mainstream

2005-02-07 Thread R.A. Hettinga
http://news.zdnet.com/2102-1009_22-5564288.html?tag=printthis Quantum crypto firm charts way to mainstream By Michael Kanellos URL: http://news.zdnet.com/2100-1009_22-5564288.html Magiq Technologies is creating a new line of products this year that it says could help make quantum encryption

Swiss on a Roll With Quantum Crypto

2004-09-29 Thread R. A. Hettinga
http://www.lightreading.com/document.asp?site=lightreadingdoc_id=60160 Light Reading - Networking the Telecom Industry SEPTEMBER 29, 2004 ? Swiss on a Roll With Quantum Crypto GENEVA -- Deckpoint and id Quantique, two private companies active in the field of information technology and based

Re: On hash breaks, was Re: First quantum crypto bank transfer

2004-08-25 Thread John Kelsey
From: Jerrold Leichter [EMAIL PROTECTED] Sent: Aug 24, 2004 7:18 AM To: Joseph Ashwood [EMAIL PROTECTED] Cc: [EMAIL PROTECTED] Subject: Re: On hash breaks, was Re: First quantum crypto bank transfer [[Note: I've tried to sort out who wrote what, but something odd was going on in the quoting

Re: First quantum crypto bank transfer

2004-08-24 Thread Jerrold Leichter
it was a curiosity - that you could never maintain | coherence except in free space and over short distances. | | That's backwards. Quantum crypto free in space is hard. The thought experiments on this always involve simple pictures in free space. I agree, actually *doing* anything in free space

Re: First quantum crypto bank transfer

2004-08-24 Thread John Denker
in the real world. For QM key exchange, step 1 goes back maybe 10-15 years, and most people thought it was a curiosity - that you could never maintain coherence except in free space and over short distances. That's backwards. Quantum crypto free in space is hard. It's much easier to use a single-mode

Re: First quantum crypto bank transfer

2004-08-24 Thread Bill Stewart
At 02:02 AM 8/23/2004, Florian Weimer wrote: * Bill Stewart: I agree that it doesn't look useful, but lawful intercept is harder, if you're defining that as undetected eavesdropping with possible cooperation of the telco in the middle, because quantum crypto needs end-to-end fiber so there's

Re: On hash breaks, was Re: First quantum crypto bank transfer

2004-08-24 Thread Jerrold Leichter
| Alternatively, how anyone can have absolute confidence in conventional | crypto | in a week when a surprise attack appears against a widely-fielded | primitive | like MD5 is beyond me. Is our certainty about AES's security really any | better today than was our certainty about RIPEM - or

Re: On hash breaks, was Re: First quantum crypto bank transfer

2004-08-24 Thread Hal Finney
Joe Ashwood writes: Except for RIPEM there were known to be reasons for this, MD5 was known to be flawed, SHA-0 was replaced because it was flawed (although knowledge of the nature of the flaw was hidden). Even with RIPEM (and SHA-1 for the same reason) I have plans in place (and have had

Re: On hash breaks, was Re: First quantum crypto bank transfer

2004-08-24 Thread Joseph Ashwood
- Original Message - From: Jerrold Leichter [EMAIL PROTECTED] Subject: Re: On hash breaks, was Re: First quantum crypto bank transfer | (they all have backup | plans that involve the rest of the SHA series and at the very least | Whirlpool). Moving to a larger hash function

Re: First quantum crypto bank transfer

2004-08-23 Thread Florian Weimer
* Bill Stewart: I agree that it doesn't look useful, but lawful intercept is harder, if you're defining that as undetected eavesdropping with possible cooperation of the telco in the middle, because quantum crypto needs end-to-end fiber so there's nothing the telco can help with except

Re: First quantum crypto bank transfer

2004-08-23 Thread Matt Crawford
- but this is a remarkably parochial attitude. Quantum crypto raises fundamental issues in physics. But we aren't physicists. Hey! It isn't research any more. There are companies trying to *sell this*. Please don't blame the physicists for that. It is still research, but someone is selling tincture of quantum

Re: First quantum crypto bank transfer

2004-08-22 Thread Bill Stewart
is harder, if you're defining that as undetected eavesdropping with possible cooperation of the telco in the middle, because quantum crypto needs end-to-end fiber so there's nothing the telco can help with except installing dark fiber, and the quantum crypto lets you detect eavesdroppers. On the other hand

Re: First quantum crypto bank transfer

2004-08-22 Thread Florian Weimer
really against presenting it as if had direct practical relevance. Basic research such receive government funding, but not based on the false claim that it can secure bank transfers. Quantum crypto raises fundamental issues in physics. The interaction of information and QM is complex and very

First quantum crypto bank transfer

2004-08-21 Thread R. A. Hettinga
--- begin forwarded text From: Andrew Thomas [EMAIL PROTECTED] To: [EMAIL PROTECTED] Subject: First quantum crypto bank transfer Date: Fri, 20 Aug 2004 09:05:58 +0200 Sender: [EMAIL PROTECTED] Cryptography system goes underground (Aug 19) http://physicsweb.org/article/news/8/8/13

Re: Bank transfer via quantum crypto

2004-05-25 Thread Ivan Krstic
Apologies for the late response. Finals have a knack for keeping me away from the keyboard. Ian Grigg wrote: You are looking at QC from a scientific perspective. What is happening is not scientific, but business. [Points 1..7 snipped] Hence, quantum cryptogtaphy. Cryptographers and engineers

The EU pursues quantum crypto because of Echelon

2004-05-25 Thread Steve Bellovin
http://www.computerworld.com/securitytopics/security/story/0,10801,93220,00.html?from=homeheads I'm not sure what more to say, given my opinion of the general utility of quantum crypto --Steve Bellovin, http://www.research.att.com/~smb

Quantum crypto gets a speed boost

2004-05-08 Thread R. A. Hettinga
http://optics.org/articles/news/10/5/2/1 Optics.org Quantum crypto gets a speed boost 6 May 2004 NIST scientists transfer a quantum key made of single photons at a rate of 1Mbps. A team of US scientists from the National Institute of Standards and Technology (NIST) in Colorado and Acadia

Re: Bank transfer via quantum crypto

2004-04-28 Thread Ian Grigg
Ivan Krstic wrote: I have to agree with Perry on this one: I simply can't see a compelling reason for the push currently being given to ridiculously overpriced implementations of what started off as a lab toy, and what offers - in all seriousness - almost no practical benefits over the proper

Bank transfer via quantum crypto

2004-04-22 Thread Ivan Krstic
On /. today: An anonymous reader writes with today's announcement that the Austrian project for Quantum Cryptography[1] made the world's first Bank Transfer via Quantum Cryptography Based on Entangled Photons; see also Einstein-Podolski-Rosen Paradoxon[2]. (For more background, see the recent

Re: my periodic rant on quantum crypto

2004-04-14 Thread David Honig
At 03:37 PM 4/12/04 -0400, Perry E. Metzger wrote: QC can only run over a dedicated fiber over a short run, where more normal mechanisms can work fine over any sort of medium -- copper, the PSTN, the internet, etc, and can operate without distance limitation. Nice essay. I especially liked the

my periodic rant on quantum crypto

2004-04-12 Thread Perry E. Metzger
/. is running yet another story on quantum cryptography today, with the usual breathless hype: http://science.slashdot.org/article.pl?sid=04/04/12/133623 I'm especially unimpressed with the Does this spell the end of the field of cryptography? comment. For those who don't know much about what

Re: Quantum Crypto

2003-12-20 Thread John Lowry
product. There is a baby in that bath water ! Season's Greetings ! John On 12/16/03 10:14, Perry E.Metzger [EMAIL PROTECTED] wrote: There have been more press releases about quantum crypto products lately. I will summarize my opinion simply -- even if they can do what is advertised

Re: Quantum Crypto

2003-12-20 Thread Perry E . Metzger
John Lowry [EMAIL PROTECTED] writes: Perry is absolutely right. There is no point in pursuing this. It might even be analogous to what we now know about computers. We were warned that there would never be a need for more than A half-dozen - after all, they were extremely expensive just to

Quantum Crypto

2003-12-18 Thread Perry E . Metzger
There have been more press releases about quantum crypto products lately. I will summarize my opinion simply -- even if they can do what is advertised, they aren't very useful. They only provide link security, and at extremely high cost. You can easily just run AES+HMAC on all the bits crossing