Tracing edupersontargetedid to usernames

Morris, Andi amorris at
Tue May 27 10:21:00 EDT 2014

Thanks for the information all.

I'm not sure that I'm getting the right information back from the Service Provider in this instance. They have given me a character string, ending in my domain, but it doesn't appear to be of any use at all. I'm waiting for more information from them.


-----Original Message-----
From: users-bounces at [mailto:users-bounces at] On Behalf Of Peter Schober
Sent: 25 May 2014 08:02
To: users at
Subject: Re: Tracing edupersontargetedid to usernames

* Cantor, Scott <cantor.2 at> [2014-05-23 17:04]:
> Using hashing as a strategy presupposes to some degree you don't have 
> this use case. That was one of the reasons we pushed the database 
> approach, and eventually after it was clear that wasn't going to 
> result in anybody using a database, we just decided to stop arguing 
> over it because the number of cases where people needed this was rare.

Well, if you really wanted to know that from ePTID you could always hash all your userids and look for the matching one.
You'd have to look at the code though for the exact algorithm used by the ComputedID data connector.
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