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Posted to issues@orc.apache.org by "Xinli Shang (Jira)" <ji...@apache.org> on 2020/02/03 16:29:00 UTC

[jira] [Commented] (ORC-14) Add column level encryption to ORC files

    [ https://issues.apache.org/jira/browse/ORC-14?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17029078#comment-17029078 ] 

Xinli Shang commented on ORC-14:
--------------------------------

[~omalley], Are the masking value and the encrypted value stored separately?  Do you have numbers for the storage overhead for adding data masking, specifically for sha256 masking? 

> Add column level encryption to ORC files
> ----------------------------------------
>
>                 Key: ORC-14
>                 URL: https://issues.apache.org/jira/browse/ORC-14
>             Project: ORC
>          Issue Type: New Feature
>            Reporter: Owen O'Malley
>            Assignee: Owen O'Malley
>            Priority: Major
>             Fix For: 1.6.0
>
>         Attachments: columnEncryption.png
>
>
> It would be useful to support column level encryption in ORC files. Since each column and its associated index is stored separately, encrypting a column separately isn't difficult. In terms of key distribution, it would make sense to use an external server like the one in HADOOP-9331.



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