Re: New Credit Card Scam (fwd)

2005-07-12 Thread Jason Holt
On Mon, 11 Jul 2005, Lance James wrote: [...] place to fend off these attacks. Soon phishers will just use the site itself to phish users, pushing away the dependency on tricking the user with a spoofed or mirrored site. [...] You dismiss too much with your just. They already do attack

Re: New Credit Card Scam (fwd)

2005-07-12 Thread James A. Donald
-- Adam Fields [EMAIL PROTECTED] But it's so much worse than that. Not only is there no standard behavior, the credit companies themselves have seemingly gone out of their way to make it impossible for there to be any potential for a standard. Widely shared secrets are inherently

Re: the limits of crypto and authentication

2005-07-12 Thread dan
Well, whether you like the cell phone as the out-of-band second-factor, you can now unlock your front door with it... http://weblog.physorg.com/news2334.html --dan - The Cryptography Mailing List Unsubscribe by sending

Re: Menezes on HQMV

2005-07-12 Thread Hal Finney
Eric Rescorla wrote, on July 1: There's an interesting paper up on eprint now: http://eprint.iacr.org/2005/205 Another look at HMQV Alfred Menezes ... In this paper we demonstrate that HMQV is insecure by presenting realistic attacks in the Canetti-Krawczyk model

Re: New Credit Card Scam (fwd)

2005-07-12 Thread Lance James
Jason Holt wrote: On Mon, 11 Jul 2005, Lance James wrote: [...] place to fend off these attacks. Soon phishers will just use the site itself to phish users, pushing away the dependency on tricking the user with a spoofed or mirrored site. [...] You dismiss too much with your just. They

Re: the limits of crypto and authentication

2005-07-12 Thread Ben Laurie
Perry E. Metzger wrote: Florian Weimer [EMAIL PROTECTED] writes: * Perry E. Metzger: Nick Owen [EMAIL PROTECTED] writes: It would seem simple to thwart such a trojan with strong authentication simply by requiring a second one-time passcode to validate the transaction itself in addition to

Re: EMV

2005-07-12 Thread Ben Laurie
Peter Fairbrother wrote: Florian Weimer wrote: * David Alexander Molnar: Actually, smart cards are here today. My local movie theatre in Berkeley, California is participating in a trial for MasterCard PayPass. There is a little antenna at the window; apparently you can just wave your card

Re: the limits of crypto and authentication

2005-07-12 Thread Perry E. Metzger
Ben Laurie [EMAIL PROTECTED] writes: That could be fixed. I think the right design for such a device has it only respond to signed and encrypted requests from the issuing bank directed at the specific device, and only make signed and encrypted replies directed only at the specific issuing

Re: the limits of crypto and authentication

2005-07-12 Thread Mads Rasmussen
In Brazil there's alot of trojans similar to the one Steven mentioned, almost all of them targeted at diferent national banks. A while back they worked as external pop-ups as we named them. That is they appeared on top of the browser appearing visually like when you are asked for your

Re: the limits of crypto and authentication

2005-07-12 Thread Ben Laurie
Perry E. Metzger wrote: Ben Laurie [EMAIL PROTECTED] writes: That could be fixed. I think the right design for such a device has it only respond to signed and encrypted requests from the issuing bank directed at the specific device, and only make signed and encrypted replies directed only at

Re: the limits of crypto and authentication

2005-07-12 Thread Anne Lynn Wheeler
Perry E. Metzger wrote: By the way, I note as an aside that this also means (in my opinion) that certificates are no longer an interesting technology for payments protocols, because in a purely online environment, you never need a third party x.509 certificate in the course of the payments

Re: the limits of crypto and authentication

2005-07-12 Thread Anne Lynn Wheeler
Perry E. Metzger wrote: Ah, I see what you mean. Sadly, I don't think there is much to be done about that, but I think that (personally) I'd only end up with two of the things. If they can be made credit card sized, I don't see this as worse than what I have to carry now. there are a

Re: the limits of crypto and authentication

2005-07-12 Thread Perry E. Metzger
Ben Laurie [EMAIL PROTECTED] writes: Perry E. Metzger wrote: Anonymity is a concern to me, too, but I suspect that it is hard to get anonymity in a credit card transaction using current means, even if the merchant isn't online. Pseudonymity, perhaps. Can we not aim higher than merely doing

Re: [Forwarded] RealID: How to become an unperson.

2005-07-12 Thread Peter Hendrickson
Perry Metzger wrote: So, the next time one of your friends in Germany asks why the crazy Americans think ID cards and such are a bad thing, remember my father, and remember all the people like him who fled to the US over the last couple hundred years and who left children that still remember

Re: the limits of crypto and authentication

2005-07-12 Thread Bill Stewart
At 09:29 PM 7/9/2005, Perry E. Metzger wrote: The Blue Card, so far as I can tell, was poorly thought out beyond its marketing potential. I knew some folks at Amex involved in the development of the system, and I did not get the impression they had much of a coherent idea of what the

ID theft -- so what?

2005-07-12 Thread John Denker
I am reminded of a passage from Buffy the Vampire Slayer. In the episode Lie to Me: BILLY FORDHAM: I know who you are. SPIKE: I know who I am, too. So what? My point here is that knowing who I am shouldn't be a crime, nor should it contribute to enabling any crime. Suppose you

Re: the limits of crypto and authentication

2005-07-12 Thread Adam Shostack
On Tue, Jul 12, 2005 at 02:48:02PM -0700, Bill Stewart wrote: | At 09:29 PM 7/9/2005, Perry E. Metzger wrote: | The Blue Card, so far as I can tell, was poorly thought out beyond its | marketing potential. I knew some folks at Amex involved in the | development of the system, and I did not get the

RE: EMV

2005-07-12 Thread Gabriel Haythornthwaite
In Hong Kong a lot of people do little more than wave their bags at the turnstile. Removing the wallet and revealing its size is unnecessary. -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Ben Laurie Sent: Tuesday, 12 July 2005 8:14 PM To: Peter