com.ibm.crypto.ibmjcehybrid.provider

Class RC4KeyGeneratorHybrid

java.lang.Object

javax.crypto.KeyGeneratorSpi

com.ibm.crypto.ibmjcehybrid.provider.RC4KeyGeneratorHybrid

public final class RC4KeyGeneratorHybrid
extends javax.crypto.KeyGeneratorSpi

This class is a facade for the RC4 key generation algorithm.

Constructor Summary

Constructors

Constructor and Description
RC4KeyGeneratorHybrid() Creates an instance of the RC4KeyGeneratorHybrid class.

Method Summary

Modifier and Type	Method and Description
protected javax.crypto.SecretKey	engineGenerateKey() Gets the key generator and generates the key.
protected void	engineInit(java.security.spec.AlgorithmParameterSpec params, java.security.SecureRandom random) Initializes this key generator with the specified parameter set and a user-provided source of randomness.
protected void	engineInit(int keysize, java.security.SecureRandom random) Initializes this key generator for a certain keysize, using the given source of randomness.
protected void	engineInit(java.security.SecureRandom random) Initializes this key generator.
protected javax.crypto.SecretKey	generateKey(boolean isExternalCall) Gets the key generator and generates the key.
javax.crypto.KeyGenerator	getBestInstance(java.lang.String algorithm) Creates an instance of the specified KeyGenerator, the provider will be the selecting the first provider in the list for the generator that returns a KeyGenerator object.
protected void	getGenerator() Creates an instance of the KeyGenerator.

Methods inherited from class java.lang.Object

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

Constructor Detail

RC4KeyGeneratorHybrid

public RC4KeyGeneratorHybrid()

Creates an instance of the RC4KeyGeneratorHybrid class.

Method Detail

engineInit

protected void engineInit(java.security.SecureRandom random)

Initializes this key generator.

Specified by:

engineInit in class javax.crypto.KeyGeneratorSpi

Parameters:

random - the source of randomness for this generator

engineInit

protected void engineInit(java.security.spec.AlgorithmParameterSpec params,
                          java.security.SecureRandom random)
                   throws java.security.InvalidAlgorithmParameterException

Initializes this key generator with the specified parameter set and a user-provided source of randomness.

Specified by:

engineInit in class javax.crypto.KeyGeneratorSpi

Parameters:

params - the key generation parameters

random - the source of randomness for this key generator

Throws:

java.security.InvalidAlgorithmParameterException - if params is inappropriate for this key generator

engineInit

protected void engineInit(int keysize,
                          java.security.SecureRandom random)

Initializes this key generator for a certain keysize, using the given source of randomness.

Specified by:

engineInit in class javax.crypto.KeyGeneratorSpi

Parameters:

keysize - the keysize. This is an algorithm-specific metric specified in number of bits.

random - the source of randomness for this key generator

engineGenerateKey

protected javax.crypto.SecretKey engineGenerateKey()

Gets the key generator and generates the key.

Specified by:

engineGenerateKey in class javax.crypto.KeyGeneratorSpi

Returns:

the new key

generateKey

protected javax.crypto.SecretKey generateKey(boolean isExternalCall)

Gets the key generator and generates the key.

Parameters:

isExternalCall - should be true if this method is being called from engineGenerateKey(), otherwise it should be false.

Returns:

the new key

getGenerator

protected void getGenerator()

Creates an instance of the KeyGenerator.

Throws:

java.lang.RuntimeException - if this method fails to create and to initialize the message digest.

getBestInstance

public javax.crypto.KeyGenerator getBestInstance(java.lang.String algorithm)

Creates an instance of the specified KeyGenerator, the provider will be the selecting the first provider in the list for the generator that returns a KeyGenerator object.

Parameters:

algorithm - The desired algorithm

Returns:

the requested KeyGenerator

Throws:

java.lang.RuntimeException - if this constructor fails to authenticate the JCE framework.