All Packages  Class Hierarchy  This Package  Previous  Next  Index

Class au.net.aba.crypto.provider.TwofishKeyGenerator

java.lang.Object
   |
   +----javax.crypto.KeyGeneratorSpi
           |
           +----au.net.aba.crypto.provider.TwofishKeyGenerator

public class TwofishKeyGenerator
extends KeyGeneratorSpi
This class is used for generating random Twofish keys. This class should not be instantiated directly, instead use the javax.crypto.KeyGenerator interface.

There is no AlgorithmParameterSpec class defined for Twofish so this generator can only be initialised using the keysize,random initialisation.

The default keysize is 128 bits, and may be up to 256 bits long.


Variable Index

 o ident

Constructor Index

 o TwofishKeyGenerator()

Method Index

 o engineGenerateKey()
Generates a random secret key.
 o engineInit(AlgorithmParameterSpec, SecureRandom)
This method is not implemented as there is no AlgorithmParameterSpec defined for Twofish.
 o engineInit(int, SecureRandom)
Initialises this key generator for a certain strength, using the given source of randomness.
 o engineInit(SecureRandom)
Initialises the key generator with the given random source.

Variables

 o ident
 public static final String ident

Constructors

 o TwofishKeyGenerator
 public TwofishKeyGenerator()

Methods

 o engineInit
 protected void engineInit(AlgorithmParameterSpec params,
                           SecureRandom random) throws InvalidAlgorithmParameterException
This method is not implemented as there is no AlgorithmParameterSpec defined for Twofish. (Use one of the other initialisation methods!)

Parameters:
params - the algorithm parameter specs for this generator.
random - a source of random numbers for this generator.
Throws: InvalidAlgorithmParameterException
An invalid parameter specification is provided.
Overrides:
engineInit in class KeyGeneratorSpi
 o engineInit
 protected void engineInit(int strength,
                           SecureRandom random)
Initialises this key generator for a certain strength, using the given source of randomness.

Parameters:
strength - the strength of the key. This is an algorithm-specific metric specified in number of bits.
random - the source of randomness for this key generator
Overrides:
engineInit in class KeyGeneratorSpi
 o engineInit
 protected void engineInit(SecureRandom random)
Initialises the key generator with the given random source.

Parameters:
random - a source of random numbers for this generator.
Overrides:
engineInit in class KeyGeneratorSpi
 o engineGenerateKey
 protected SecretKey engineGenerateKey()
Generates a random secret key.

Returns:
a secret key representing a Twofish key.
Overrides:
engineGenerateKey in class KeyGeneratorSpi

All Packages  Class Hierarchy  This Package  Previous  Next  Index