Cosign Anyone?

Pete Stone pete.stoner at
Tue Jul 5 20:41:15 PDT 2005

On Jul 5, 2005, at 8:02 PM, Kyle Mulka wrote:

> Have you guys heard of Cosign? It's the single sign on system we use
> here at UofM, and seems to be similar to OpenID, except that it  
> doesn't
> currently allow the user to specify which identity server to use. Each
> client server that wants to authenticate people has specify.

This looks a lot like pubcookie ( - which is what  
the University of Washington uses.  You're right about the difference  
- this is the main point of having OpenID.   OpenID is intended to be  
distributed, so there is no single point of failure.  Pubcookie and  
Cosign use a single login server so that accounts can be centrally  
managed.  OpenID doesn't want central management - the whole point is  
to let "anyone, anywhere" use it.

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