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https://issues.apache.org/jira/browse/HADOOP-10734?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14050388#comment-14050388
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Colin Patrick McCabe commented on HADOOP-10734:
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When using Linux, why not just read from {{/dev/urandom}}?  That will also use 
the {{RdRand}} feature when available.

> Implementation of true secure random with high performance using hardware 
> random number generator.
> --------------------------------------------------------------------------------------------------
>
>                 Key: HADOOP-10734
>                 URL: https://issues.apache.org/jira/browse/HADOOP-10734
>             Project: Hadoop Common
>          Issue Type: Sub-task
>          Components: security
>    Affects Versions: fs-encryption (HADOOP-10150 and HDFS-6134)
>            Reporter: Yi Liu
>            Assignee: Yi Liu
>             Fix For: fs-encryption (HADOOP-10150 and HDFS-6134)
>
>         Attachments: HADOOP-10734.patch
>
>
> This JIRA is to implement Secure random using JNI to OpenSSL, and 
> implementation should be thread-safe.
> Utilize RdRand to return random numbers from hardware random number 
> generator. It's TRNG(True Random Number generators) having much higher 
> performance than {{java.security.SecureRandom}}. 
> https://wiki.openssl.org/index.php/Random_Numbers
> http://en.wikipedia.org/wiki/RdRand
> https://software.intel.com/en-us/articles/performance-impact-of-intel-secure-key-on-openssl



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