cryptix.provider.cipher
Class Square

java.lang.Object
  |
  +--xjava.security.IJCE_Traceable
        |
        +--xjava.security.Cipher
              |
              +--cryptix.provider.cipher.Square
All Implemented Interfaces:
Parameterized, SymmetricCipher

public final class Square
extends Cipher
implements SymmetricCipher

A subclass of Cipher to implement a Java class of the Square algorithm.

Square is a cipher algorithm developed by Joan Daemen and Vincent Rijmen

References:

Copyright © 1997 Systemics Ltd on behalf of the Cryptix Development Team.
All rights reserved.

$Revision: 1.6 $

Since:
Cryptix 2.2
Author:
Raif S. Naffah, Paulo S.L.M. Barreto, David Hopwood

Fields inherited from class xjava.security.Cipher
DECRYPT, ENCRYPT, UNINITIALIZED
 
Fields inherited from class xjava.security.IJCE_Traceable
tracing
 
Constructor Summary
Square()
          Constructs a Square cipher object, in the UNINITIALIZED state.
 
Method Summary
(package private) static void ()
           
 java.lang.Object clone()
          Always throws a CloneNotSupportedException (cloning of ciphers is not supported for security reasons).
 int engineBlockSize()
          SPI: Returns the length of an input block, in bytes.
protected  void engineInitDecrypt(java.security.Key key)
          SPI: Initializes this cipher for decryption, using the specified key.
protected  void engineInitEncrypt(java.security.Key key)
          SPI: Initializes this cipher for encryption, using the specified key.
protected  int engineUpdate(byte[] in, int inOffset, int inLen, byte[] out, int outOffset)
          SPI: This is the main engine method for updating data.
protected  void finalize()
          Cleans up resources used by this instance, if necessary.
static LinkStatus getLinkStatus()
          Gets an object representing the native linking status of this class.
static void main(java.lang.String[] args)
           
 
Methods inherited from class xjava.security.Cipher
blockSize, crypt, crypt, crypt, doFinal, doFinal, doFinal, doFinal, engineCiphertextBlockSize, engineCrypt, engineGetParameter, engineInBufferSize, engineOutBufferSize, enginePlaintextBlockSize, engineSetPaddingScheme, engineSetParameter, getAlgorithm, getAlgorithms, getAlgorithms, getCiphertextBlockSize, getInputBlockSize, getInstance, getInstance, getInstance, getMode, getOutputBlockSize, getPadding, getPaddingScheme, getParameter, getPlaintextBlockSize, getProvider, getState, inBufferSize, inBufferSizeFinal, initDecrypt, initEncrypt, isPaddingBlockCipher, outBufferSize, outBufferSizeFinal, setParameter, toString, update, update, update, update
 
Methods inherited from class xjava.security.IJCE_Traceable
disableTracing, enableTracing, traceMethod, traceResult, traceResult, traceVoidMethod
 
Methods inherited from class java.lang.Object
equals, getClass, hashCode, notify, notifyAll, wait, wait, wait
 

Constructor Detail

Square

public Square()
Constructs a Square cipher object, in the UNINITIALIZED state. This calls the Cipher constructor with implBuffering false, implPadding false and the provider set to "Cryptix".
Method Detail

getLinkStatus

public static LinkStatus getLinkStatus()
Gets an object representing the native linking status of this class.

static void ()

finalize

protected final void finalize()
Cleans up resources used by this instance, if necessary.
Overrides:
finalize in class java.lang.Object

clone

public final java.lang.Object clone()
                             throws java.lang.CloneNotSupportedException
Always throws a CloneNotSupportedException (cloning of ciphers is not supported for security reasons).
Overrides:
clone in class Cipher
Following copied from class: xjava.security.Cipher
Throws:
java.lang.CloneNotSupportedException - if the cipher is not cloneable.

engineBlockSize

public int engineBlockSize()
SPI: Returns the length of an input block, in bytes.
Overrides:
engineBlockSize in class Cipher
Returns:
the length in bytes of an input block for this cipher.

engineInitEncrypt

protected void engineInitEncrypt(java.security.Key key)
                          throws java.security.InvalidKeyException
SPI: Initializes this cipher for encryption, using the specified key.
Overrides:
engineInitEncrypt in class Cipher
Parameters:
key - the key to use for encryption.
Throws:
java.security.InvalidKeyException - when one of the following occurs:
  • key.getEncoded() == null;
  • The encoded byte array form of the key is zero-length;
  • The length of the user key data array is out of the permissible limits.

engineInitDecrypt

protected void engineInitDecrypt(java.security.Key key)
                          throws java.security.InvalidKeyException
SPI: Initializes this cipher for decryption, using the specified key.
Overrides:
engineInitDecrypt in class Cipher
Parameters:
key - the key to use for decryption.
Throws:
java.security.InvalidKeyException - when one of the following occurs:
  • key.getEncoded() == null;
  • The encoded byte array form of the key is zero-length;
  • The length of the user key data array is out of the permissible limits.

engineUpdate

protected int engineUpdate(byte[] in,
                           int inOffset,
                           int inLen,
                           byte[] out,
                           int outOffset)
SPI: This is the main engine method for updating data.

in and out may be the same array, and the input and output regions may overlap.

Overrides:
engineUpdate in class Cipher
Parameters:
in - the input data.
inOffset - the offset into in specifying where the data starts.
inLen - the length of the subarray.
out - the output array.
outOffset - the offset indicating where to start writing into the out array.
Returns:
the number of bytes written.
Throws:
CryptixException - if the native library is being used, and it reports an error.

main

public static final void main(java.lang.String[] args)