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cryptix.jce.provider.key
Class RawKeyGenerator  

java.lang.Object
  javax.crypto.KeyGeneratorSpi
      cryptix.jce.provider.key.RawKeyGenerator

Direct Known Subclasses:

BlowfishKeyGenerator, CAST5KeyGenerator, DESKeyGenerator, HMACKeyGenerator, IDEAKeyGenerator, MARSKeyGenerator, RC2KeyGenerator, RC4KeyGenerator, RC6KeyGenerator, RijndaelKeyGenerator, SerpentKeyGenerator, SKIPJACKKeyGenerator, SquareKeyGenerator, TripleDESKeyGenerator, TwofishKeyGenerator

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abstract class RawKeyGenerator

extends javax.crypto.KeyGeneratorSpi

Version:

$Revision: 1.8 $

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Field Summary
private  java.lang.String	algorithm
private  int	defaultKeySize
private  int	keySize
private  java.security.SecureRandom	random

 

Constructor Summary
protected	RawKeyGenerator(java.lang.String algorithm, int defaultKeySize)

 

Method Summary
protected  javax.crypto.SecretKey	engineGenerateKey()           Generate a key, returning it as a javax.crypto.SecretKey.
protected  void	engineInit(java.security.spec.AlgorithmParameterSpec params, java.security.SecureRandom random)           Initialize this key generator with parameters and a source of randomness.
protected  void	engineInit(int keysize, java.security.SecureRandom random)           Initialize this key generator with a key size (in bits) and a source of randomness.
protected  void	engineInit(java.security.SecureRandom random)           Initialize this key generator with a source of randomness; the implementation should use reasonable default parameters (such as generated key size).
protected  byte[]	fixUp(byte[] key)           Fix up the generated and purely random bytes.
protected abstract  boolean	isValidSize(int size)           Is the given keysize valid for this algorithm?
protected abstract  boolean	isWeak(byte[] keyBytes)           Returns true if the given key is weak.
protected  int	strengthToBits(int strength)           Translates strength (complexity, 56 for DES) to bit length (64 for DES).

 

Methods inherited from class java.lang.Object

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

 

Field Detail

algorithm

private final java.lang.String algorithm

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defaultKeySize

private final int defaultKeySize

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random

private java.security.SecureRandom random

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keySize

private int keySize

Constructor Detail

RawKeyGenerator

protected RawKeyGenerator(java.lang.String algorithm,
                          int defaultKeySize)

Method Detail

engineInit

protected void engineInit(java.security.SecureRandom random)

Description copied from class: javax.crypto.KeyGeneratorSpi

Initialize this key generator with a source of randomness; the implementation should use reasonable default parameters (such as generated key size).

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engineInit

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

Description copied from class: javax.crypto.KeyGeneratorSpi

Initialize this key generator with parameters and a source of randomness.

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engineInit

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

Description copied from class: javax.crypto.KeyGeneratorSpi

Initialize this key generator with a key size (in bits) and a source of randomness.

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engineGenerateKey

protected javax.crypto.SecretKey engineGenerateKey()

Description copied from class: javax.crypto.KeyGeneratorSpi

Generate a key, returning it as a javax.crypto.SecretKey.

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strengthToBits

protected int strengthToBits(int strength)

Translates strength (complexity, 56 for DES) to bit length (64 for DES).

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fixUp

protected byte[] fixUp(byte[] key)

Fix up the generated and purely random bytes. For DES this would fix the parity.

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isWeak

protected abstract boolean isWeak(byte[] keyBytes)

Returns true if the given key is weak.

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isValidSize

protected abstract boolean isValidSize(int size)

Is the given keysize valid for this algorithm?

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Overview  Package   Class  Use  Deprecated  Index
Home >> All >> cryptix >> jce >> provider >> [ key overview ]	PREV CLASS  NEXT CLASS
SUMMARY:  JAVADOC |  SOURCE |  DOWNLOAD | NESTED | FIELD | CONSTR | METHOD	DETAIL: FIELD | CONSTR | METHOD

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