org.springframework.security.token

Class SecureRandomFactoryBean

java.lang.Object

org.springframework.security.token.SecureRandomFactoryBean

All Implemented Interfaces:

org.springframework.beans.factory.FactoryBean

public class SecureRandomFactoryBean
extends java.lang.Object
implements org.springframework.beans.factory.FactoryBean

Creates a SecureRandom instance.

Since:

2.0.1

Author:

Ben Alex

Constructor Summary

Constructors

Constructor and Description
SecureRandomFactoryBean()

Method Summary

Methods

Modifier and Type	Method and Description
java.lang.Object	getObject()
java.lang.Class	getObjectType()
boolean	isSingleton()
void	setAlgorithm(java.lang.String algorithm) Allows the Pseudo Random Number Generator (PRNG) algorithm to be nominated.
void	setSeed(org.springframework.core.io.Resource seed) Allows the user to specify a resource which will act as a seed for the SecureRandom instance.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

SecureRandomFactoryBean

public SecureRandomFactoryBean()

Method Detail

getObject

public java.lang.Object getObject()
                           throws java.lang.Exception

Specified by:

getObject in interface org.springframework.beans.factory.FactoryBean

Throws:

java.lang.Exception

getObjectType

public java.lang.Class getObjectType()

Specified by:

getObjectType in interface org.springframework.beans.factory.FactoryBean

isSingleton

public boolean isSingleton()

Specified by:

isSingleton in interface org.springframework.beans.factory.FactoryBean

setAlgorithm

public void setAlgorithm(java.lang.String algorithm)

Allows the Pseudo Random Number Generator (PRNG) algorithm to be nominated. Defaults to SHA1PRNG.

Parameters:

algorithm - to use (mandatory)

setSeed

public void setSeed(org.springframework.core.io.Resource seed)

Allows the user to specify a resource which will act as a seed for the SecureRandom instance. Specifically, the resource will be read into an InputStream and those bytes presented to the SecureRandom.setSeed(byte[]) method. Note that this will simply supplement, rather than replace, the existing seed. As such, it is always safe to set a seed using this method (it never reduces randomness).

Parameters:

seed - to use, or null if no additional seeding is needed