Package org.springframework.security.core.token

Class SecureRandomFactoryBean

java.lang.Object

org.springframework.security.core.token.SecureRandomFactoryBean

All Implemented Interfaces:

org.springframework.beans.factory.FactoryBean<SecureRandom>

public class SecureRandomFactoryBean
extends Object
implements org.springframework.beans.factory.FactoryBean<SecureRandom>

Creates a SecureRandom instance.

Since:

2.0.1

Field Summary

Fields inherited from interface org.springframework.beans.factory.FactoryBean

OBJECT_TYPE_ATTRIBUTE

Constructor Summary

Constructors

Constructor	Description
SecureRandomFactoryBean()

Method Summary

Modifier and Type	Method	Description
SecureRandom	getObject()
Class<SecureRandom>	getObjectType()
boolean	isSingleton()
void	setAlgorithm(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 Details

SecureRandomFactoryBean

public SecureRandomFactoryBean()

Method Details

getObject

public SecureRandom getObject()
                       throws Exception

Specified by:

getObject in interface org.springframework.beans.factory.FactoryBean<SecureRandom>

Throws:

Exception

getObjectType

public Class<SecureRandom> getObjectType()

Specified by:

getObjectType in interface org.springframework.beans.factory.FactoryBean<SecureRandom>

isSingleton

public boolean isSingleton()

Specified by:

isSingleton in interface org.springframework.beans.factory.FactoryBean<SecureRandom>

setAlgorithm

public void setAlgorithm(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