java.security

Class SecureRandomSpi

java.lang.Object

java.security.SecureRandomSpi

All 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

Constructors

Constructor and Description
SecureRandomSpi() Default Constructor for SecureRandomSpi

Method Summary

Methods

Modifier and Type	Method and Description
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, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

SecureRandomSpi

public SecureRandomSpi()

Default Constructor for SecureRandomSpi

Method Detail

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.

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

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