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Micro Distribution of the Payara Project for IBM JDK
/*
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*
* Copyright (c) 2011-2012 Oracle and/or its affiliates. All rights reserved.
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package org.glassfish.security.common;
import java.security.SecureRandom;
/**
* An utility class that supplies an Initialized SecureRandom.
*/
public class SharedSecureRandomImpl {
//the generator has a large period (in Sun's standard implementation, based on the 160-bit SHA1 hash function, the period is 2^160);
private static final SecureRandom secureRandom = new SecureRandom();
static {
//always call java.security.SecureRandom.nextBytes(byte[])
//immediately after creating a new instance of the PRNG.
//This will force the PRNG to seed itself securely
byte[] key = new byte[20];
secureRandom.nextBytes(key);
}
/**
* Can a single java.security.SecureRandom instance be shared safely by multiple threads ?.
* Yes. As far as I know. nextBytes and setSeed are sync'd.
*/
public static SecureRandom get() {
return secureRandom;
}
}
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