[OpenID] Can one use Generic OpenIds

Johnny Bufu johnny at sxip.com
Tue May 22 21:46:42 UTC 2007


On 22-May-07, at 1:29 PM, Lukas Rosenstock wrote:

> Done: http://blog.identity20.eu/23.e

> GROUP (3) - a group of people, e.g. a project team (shared within  
> about 2 to 20 people)

Unless you're envisioning a bunch of people gathered in the front of  
a computer and agreeing to hit the 'enter' key, this is still more  
like "a person acting on behalf / as part of a group", which is  
therefore still an individual, and his  function in the transaction I  
believe is better expressed through an attribute. So I second Josh's  
earlier comments / the AX way for solving it.

One of the motivations for group identifiers is not disclosing a  
public / global identifier of the user. This is exactly what directed  
identity is for in OpenID 2 (and the same feature is built-in for  
CardSpace). You can even see it in action today, if you use Sxipper  
to login into an OpenID RP using the 'private' persona, which  
generates an OpenID URL like https://openid.sxipper.com/i/ 
238de53a4bdf412b which is shared with only one RP.


So, instead of addressing the issue in a not-so-good-way, by building  
trust and attributes directly into identifiers (where there is no  
clear way how they could be processed automatically and then scale  
the whole thing), I would suggest focusing on solving the roadblocks  
on the alternate route - the attribute exchange.


Johnny




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