iaik.security.cipher
Class IDEAKeyGenerator

java.lang.Object
  |
  +--javax.crypto.KeyGeneratorSpi
        |
        +--iaik.security.cipher.IDEAKeyGenerator

public class IDEAKeyGenerator

extends KeyGeneratorSpi

This class provides the functionality of a IDEA key generator. A key generator is used for creating secret keys for symmetric algorithms.

An application uses

 KeyGenerator idea_key_gen = KeyGenerator.getInstance("IDEA");
 

for creating a KeyGenerator object for the IDEA algorithm. For actually generating the requestedsecret IDEA key from the KeyGenerator object just created, an application calls the generateKey method after having initialized the generator with some random seed or relied on the default system-provided source of randomness:

 SecretKey idea_key = idea_key_gen.generateKey();
 

See Also:

KeyGenerator, KeyGeneratorSpi, SecretKey, SecretKey, IDEA

Constructor Summary

IDEAKeyGenerator()

Method Summary

SecretKey	engineGenerateKey() Generates an IDEA key.
void	engineInit(AlgorithmParameterSpec params, SecureRandom random) Because this IDEA key generator needs no parameter this initialization method only throws a InvalidAlgorithmParameterException.
void	engineInit(int strength, SecureRandom random) Initializes this IDEA key generator for the given strength with the given random seed.
void	engineInit(SecureRandom random) Initializes this IDEA key generator with the given random seed.

Methods inherited from class java.lang.Object

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

Constructor Detail

IDEAKeyGenerator

public IDEAKeyGenerator()

Method Detail

engineInit

public void engineInit(AlgorithmParameterSpec params,
                       SecureRandom random)
                throws InvalidAlgorithmParameterException

Because this IDEA key generator needs no parameter this initialization method only throws a InvalidAlgorithmParameterException.

Overrides:

engineInit in class KeyGeneratorSpi

Throws:

InvalidAlgorithmParameterException - since this IDEA key generator needs no parameters

engineInit

public void engineInit(SecureRandom random)

Initializes this IDEA key generator with the given random seed.

Overrides:

engineInit in class KeyGeneratorSpi

Parameters:

random - the random seed for this generator

engineInit

public void engineInit(int strength,
                       SecureRandom random)

Initializes this IDEA key generator for the given strength with the given random seed. Since an IDEA key has a defined length of 128 bits, the given strength value would be ignored.

Overrides:

engineInit in class KeyGeneratorSpi

Parameters:

strength - the strength of the key to be created; ignored

random - the random seed

engineGenerateKey

public SecretKey engineGenerateKey()

Generates an IDEA key.

Overrides:

engineGenerateKey in class KeyGeneratorSpi

Returns:

the new created IDEA key

See Also:

SecretKey