Elliptic Curve Crypto (ECC) support for PKINIT

2008-09-23 Thread Anne & Lynn Wheeler
RFC 5349 September 2008 This document describes the use of Elliptic Curve certificates, Elliptic Curve signature schemes and Elliptic Curve Diffie-Hellman (ECDH) key agreement within the framework of PKINIT -- the Kerberos Version 5 extension that provides for the use of public key cryptography

Re: once more, with feeling.

2008-09-23 Thread Perry E. Metzger
"James A. Donald" <[EMAIL PROTECTED]> writes: > If the user is used to logging in by a user interface that is not easy > for forge remotely - click on bookmark to bring up a user interface > that is difficult to remotely forge - then this does indeed work. It might have been secure enough back in

Re: once more, with feeling.

2008-09-23 Thread Nicolas Williams
On Mon, Sep 22, 2008 at 08:59:25PM -1000, James A. Donald wrote: > The major obstacle is that the government would want a strong binding > between sim cards and true names, which is no more practical than a > strong binding between physical keys and true names. I've a hard time believing that th

Re: once more, with feeling.

2008-09-23 Thread James A. Donald
Peter Gutmann wrote: The problem is that the default has always been to be insecure, and there's no effective way to get people to move to the secure non-default, or at least none that isn't relatively easily circumvented by a bit of creative thinking and/or social engineering. If the user is

Re: Lava lamp random number generator made useful?

2008-09-23 Thread Jon Callas
A cheap USB camera would make a good source. The cheaper the better, too. Pull a frame off, hash it, and it's got entropy, even against a white background. No lava lamp needed. I sort of agree, but I feel cautious about recommending that people use their holiday snaps. And then post them on lin

Re: once more, with feeling.

2008-09-23 Thread James A. Donald
Leichter, Jerry wrote: The problem is what that "something else" should be. Keyfobs with one-time passwords are a good solution from the pure security point of view, but (a) people find them annoying; (b) when used with existing input mechanisms, as they pretty much universally are, are subject

Re: once more, with feeling.

2008-09-23 Thread Peter Gutmann
"Leichter, Jerry" <[EMAIL PROTECTED]> writes: >The sitation today is (a) the decreasing usefulness of passwords - those >anyone has a chance of remembering are just to guessable in the face of the >kinds of massive intelligent brute force that's possible today and (b) the >inherently insecure pass

EV certs: Doing more of what we already know doesn't work

2008-09-23 Thread Peter Gutmann
Inspired by Ian Grigg's comment (in the subject line) and various remarks made in a recent thread, I had a look at the Verisign 1.0 CPS from 1996 and the very latest Verisign CPS from June 2008, twelve years later. Here's the authentication requirements for businesses. One is from the 1.0 CPS, wh

Re: once more, with feeling.

2008-09-23 Thread Peter Gutmann
"Steven M. Bellovin" <[EMAIL PROTECTED]> writes: >[EMAIL PROTECTED] (Peter Gutmann) wrote: >> - Use TLS-PSK, which performs mutual auth of client and server >> without ever communicating the password. This vastly complicated >> phishing since the phisher has to prove advance knowledge of your >> c

The You are Now in France attack, still with us after all these years

2008-09-23 Thread Peter Gutmann
I was browsing through the Windows download centre for reasons not relevant here and came across KB955417, dated 22 August 2008: Install this update to resolve an issue in which protected storage (PStore) uses a lower quality cryptographic function when the system locale is set to French (Fr