Kevin Minder created KNOX-28:
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             Summary: Support federation/SSO using external tokens
                 Key: KNOX-28
                 URL: https://issues.apache.org/jira/browse/KNOX-28
             Project: Apache Knox
          Issue Type: New Feature
            Reporter: Kevin Minder
            Assignee: Kevin Minder


During our discussions with a customer they expressed requirements that the 
gateway and ultimately Hadoop proper accept externally generated authentication 
tokens. There are really two possible models here.
1. The gateway accepts external tokens (e.g. SAML, JWT, SWT), extracts the 
principal and passes that downstream via either pseudo auth mechanism or 
creation of hadoop.auth tokens.
2. The gateway is transparent and passes these external tokens through to the 
downstream services where they will perform the required verification. This 
model provides better security but will require changes to all downstream 
Hadoop services.


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