[cap-talk] Firefox breaks the principle of identifiability

Jed Donnelley jed at nersc.gov
Tue Feb 8 01:25:02 EST 2005


At 09:37 PM 2/7/2005, Tyler Close wrote:
...
>I want to continue to delay the introduction discussion until we nail down 
>the phishing part of the discussion, but I will get to it if you want to.
...

I'm ready to hear it.  Perhaps you could just point me to some stuff on 
your YURLs.  As you can see I was led in another sub thread to trying to 
bind a Petname to a certificate fingerprint.  I'll be interested to see if 
there is something comparable in your proposal, though you seem to object 
to cryptographic means.  If you refer me to:

http://www.waterken.com/dev/YURL/Definition/

I don't believe I see anything comparable there.  It states the 
requirements but not how to meet them technically.  When you say (in the 
above URL):
__________________________________
Site authentication

A YURL MUST provide all the information required to authenticate the target 
site. Authentication of the target site MUST ONLY rely on information 
contained in the YURL. If any outside information were used for 
authentication, the creator of that information would have power to 
determine the target of sent messages, violating the y-property. In 
particular, any URL scheme that depends on the PKI for authentication, such 
as https, is not a YURL.
___________________________________

If my "YURL" was something like:

https://www.paypal.com/:cert-MD5://A9:04:4D:C2:74:5E:05:D9:28:44:E0:8C:53:E2:31:9A

it would seem to be going directly against the idea of your YURL.  Tell me 
why the above is inadequate.
Tell me what you propose as an alternative.

--Jed http://www.webstart.com/jed/ 



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