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From "Tsz Wo Nicholas Sze (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-6134) Transparent data at rest encryption
Date Tue, 01 Jul 2014 00:51:27 GMT

    [ https://issues.apache.org/jira/browse/HDFS-6134?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14048380#comment-14048380

Tsz Wo Nicholas Sze commented on HDFS-6134:

> ..., at rest. Someone who has root access can read decrypted plaintext out of memory
directly, no need for steps 2 and 3 above.

There is a distinction -- Without steps 2 and 3, the malicious admin can ONLY obtain the data
being decrypted in a node.  With steps 2 and 3, the admin could read the entire file.

Ideally, the malicious admin should ONLY obtain the data being decrypted in a node that he/she
has root access.  Such requirement is achievable -- Suppose files are encrypted by stream
cipher.  When a task need to access a range data of a file, only the corresponding range of
keysteam is sent to the task.

> Transparent data at rest encryption
> -----------------------------------
>                 Key: HDFS-6134
>                 URL: https://issues.apache.org/jira/browse/HDFS-6134
>             Project: Hadoop HDFS
>          Issue Type: New Feature
>          Components: security
>    Affects Versions: 2.3.0
>            Reporter: Alejandro Abdelnur
>            Assignee: Alejandro Abdelnur
>         Attachments: HDFSDataatRestEncryptionProposal_obsolete.pdf, HDFSEncryptionConceptualDesignProposal-2014-06-20.pdf
> Because of privacy and security regulations, for many industries, sensitive data at rest
must be in encrypted form. For example: the health­care industry (HIPAA regulations), the
card payment industry (PCI DSS regulations) or the US government (FISMA regulations).
> This JIRA aims to provide a mechanism to encrypt HDFS data at rest that can be used transparently
by any application accessing HDFS via Hadoop Filesystem Java API, Hadoop libhdfs C library,
> The resulting implementation should be able to be used in compliance with different regulation

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