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https://jira.duraspace.org/browse/DS-937?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=24058#comment-24058
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Mark H. Wood commented on DS-937:
---------------------------------
OK, I see it now. Naturally if you seek to merge material from two different
administrative domains, without a common authority to make identifiers unique,
you can't guarantee a complete job without the possibility of translation.
UUID introduces common authorities. At the least it makes the probability of
collisions so small that I wouldn't mind committing to fix them by hand if they
ever occur.
But in the long run email addresses are neither unique nor stable. We need
something which has no other meaning, so that DSpace controls it. Emails,
public keys, biometrics or whatever are (for the purpose of identity
management) just other keys used to retrieve The Key, should be treated as
interchangeable, and should be replaceable whenever need exists and policy
permits. In some installations one might wish *not* to store email addresses
at all, but to look them up in an external directory when they are wanted.
> Stop using Email Address as Identifier for DSpace User.
> -------------------------------------------------------
>
> Key: DS-937
> URL: https://jira.duraspace.org/browse/DS-937
> Project: DSpace
> Issue Type: Improvement
> Components: DSpace API
> Affects Versions: 1.5.0, 1.5.1, 1.5.2, 1.6.0, 1.6.1, 1.6.2, 1.7.0, 1.7.1,
> 1.7.2, 1.8.0
> Reporter: Mark Diggory
> Priority: Major
>
> Use of email address as a persistent identifier for the DSpace conflicts with
> the fact that email addresses are not persistent. Email addresses go away
> and/or are reassigned to other individuals. There are also policy concerns
> with Authenticators like Shibboleth and CAS that may or may not deliver an
> email address as a organizational policy.
> This Task is a placeholder to identify a solution to correct for the problem.
> 1.) DSpace should use a different identifier / key for the EPerson (netid? or
> combination of "authenticator + netID")
> 2.) DSpace should make providing an email address as optional for cases where
> the Authentication features lack this specific capability.
> 3.) Issuing emails should be optional for accounts without email addresses.
> 4.) Stop storing email address (or any other detail about who made the
> change) in dc.description.provenance field.
> One proposed solution to this problem is that the Authentication Method
> should be broken off of EPerson and stored separately, making EPerson a
> "Profile" and the method of Authentication be stored separately (Password,
> Certificate, LDAP, Shibboleth, CAS, Facebook, Google) Different
> AuthenticationMethods may store the data as they see fit. And the Profile
> would store only those local details for that user.
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