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From Ranadip Chatterjee <ranadi...@gmail.com>
Subject Re: Encryption At Rest Question
Date Sat, 21 Feb 2015 07:42:13 GMT
In case of SSL enabled cluster, the DEK will be encrypted on the wire by
the SSL layer.

In case of non-SSL enabled cluster, it is not. But the intercepter only
gets the DEK and not the encrypted data, so the data is still safe. Only if
the intercepter also manages to gain access to the encrypted data block and
associate that with the corresponding DEK, then the data is compromised.
Given that each HDFS file has a different DEK, the intercepter has to gain
quite a bit of access before the data is compromised.

On 18 February 2015 at 00:04, Plamen Jeliazkov <
plamen.jeliazkov@wandisco.com> wrote:

> Hey guys,
> I had a question about how the new file encryption work done primarily in
> HDFS-6134.
> I was just curious, how is the DEK protected on the wire?
> Particularly after the KMS decrypts the EDEK and returns it to the client.
> Thanks,
> -Plamen
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Ranadip Chatterjee

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