java.security

Class SecureRandomSpi

Implemented Interfaces:
Serializable

public abstract class SecureRandomSpi
extends Object
implements Serializable

SecureRandomSpi is the Service Provider Interface for SecureRandom providers. It provides an interface for providers to the SecureRandom engine to write their own pseudo-random number generator.
Since:
JDK 1.2
See Also:
Serialized Form

Constructor Summary

SecureRandomSpi()
Default Constructor for SecureRandomSpi

Method Summary

protected abstract byte[]
engineGenerateSeed(int numBytes)
Gets a user specified number of bytes specified by the parameter.
protected abstract void
engineNextBytes(byte[] bytes)
Gets a user specified number of bytes depending on the length of the array?
protected abstract void
engineSetSeed(byte[] seed)
Updates the seed for SecureRandomSpi but does not reset seed.

Methods inherited from class java.lang.Object

clone, equals, extends Object> getClass, finalize, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

SecureRandomSpi

public SecureRandomSpi()
Default Constructor for SecureRandomSpi

Method Details

engineGenerateSeed

protected abstract byte[] engineGenerateSeed(int numBytes)
Gets a user specified number of bytes specified by the parameter.
Parameters:
numBytes - number of random bytes to generate
Returns:
an array full of random bytes

engineNextBytes

protected abstract void engineNextBytes(byte[] bytes)
Gets a user specified number of bytes depending on the length of the array?
Parameters:
bytes - array to fill with random bytes

engineSetSeed

protected abstract void engineSetSeed(byte[] seed)
Updates the seed for SecureRandomSpi but does not reset seed. It does to this so repeated called never decrease randomness.

SecureRandomSpi.java --- Secure Random Service Provider Interface Copyright (C) 1999, 2005 Free Software Foundation, Inc. This file is part of GNU Classpath. GNU Classpath is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2, or (at your option) any later version. GNU Classpath is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with GNU Classpath; see the file COPYING. If not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. Linking this library statically or dynamically with other modules is making a combined work based on this library. Thus, the terms and conditions of the GNU General Public License cover the whole combination. As a special exception, the copyright holders of this library give you permission to link this library with independent modules to produce an executable, regardless of the license terms of these independent modules, and to copy and distribute the resulting executable under terms of your choice, provided that you also meet, for each linked independent module, the terms and conditions of the license of that module. An independent module is a module which is not derived from or based on this library. If you modify this library, you may extend this exception to your version of the library, but you are not obligated to do so. If you do not wish to do so, delete this exception statement from your version.