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From "Xianda Ke (JIRA)" <j...@apache.org>
Subject [jira] [Created] (CRYPTO-93) add a factory method to provide simpler API and better hardware random
Date Wed, 29 Jun 2016 08:17:34 GMT
Xianda Ke created CRYPTO-93:
-------------------------------

             Summary: add a factory method to provide simpler API and better hardware random
                 Key: CRYPTO-93
                 URL: https://issues.apache.org/jira/browse/CRYPTO-93
             Project: Commons Crypto
          Issue Type: Bug
            Reporter: Xianda Ke
            Assignee: Xianda Ke


Add a default factory method to provide simpler API and better hardware  random.

OpensslCryptoRandom uses hardware random  number generator if  hardware supports.

Hardware random number generators are almost always better to use than a software based generator.
Hardware generators are often called True Random Number generators (TRNG) or Non-Deterministic
Random Number Generators since they don't rely on the deterministic behavior of executing
software instructions. Their bits streams are nearly always indistinguishable from random
streams, and their entropy is always nearly 100%.

Modern Intel CPUs(3rd generation Core i5 or i7 processor (Ivy Bridge) or above) do support
 random  number generator, it is better to provide a default API(openssl implementation) for
the client user.

{code}
// By default, use True Random Number Generator (hardware random)
// Simpler API. client code is clean.
CryptoRandom random = ryptoRandomFactory.getCryptoRandom();
byte[] key = new byte[16];
random.nextBytes(key);
random.close();
{code}



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