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From "Yi Liu (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HADOOP-10967) Improve DefaultCryptoExtension#generateEncryptedKey performance
Date Wed, 13 Aug 2014 12:46:12 GMT
Yi Liu created HADOOP-10967:
-------------------------------

             Summary: Improve DefaultCryptoExtension#generateEncryptedKey performance 
                 Key: HADOOP-10967
                 URL: https://issues.apache.org/jira/browse/HADOOP-10967
             Project: Hadoop Common
          Issue Type: Improvement
          Components: security
    Affects Versions: 2.6.0
            Reporter: Yi Liu
            Assignee: Yi Liu


This JIRA is to improve generateEncryptedKey performance:

*1.* SecureRandom#generateSeed is very slow, we should use SecureRandom#nextBytes to generate
the {{IV}} which is much faster. 

*2.* Define SecureRandom as threadlocal object which can improve the performance a bit.

*3.* Use {{new SecureRandom()}} instead of SHA1PRNG, the former has better entropy.



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