freenet.crypt.ciphers

Class Rijndael

java.lang.Object

freenet.crypt.ciphers.Rijndael

All Implemented Interfaces:

BlockCipher

public class Rijndael
extends java.lang.Object
implements BlockCipher

Interfaces with the Rijndael AES candidate to implement the Rijndael algorithm

Field Summary

Fields

Modifier and Type	Field and Description
static java.security.Provider	AesCtrProvider

Constructor Summary

Constructors

Constructor and Description
Rijndael()
Rijndael(int keysize, int blocksize) Create a Rijndael instance.

Method Summary

Modifier and Type	Method and Description
void	decipher(byte[] block, byte[] result) Deciphers the contents of block where block must be equal to getBlockSize()/8.
void	encipher(byte[] block, byte[] result) Enciphers the contents of block where block must be equal to getBlockSize()/8.
int	getBlockSize() Returns the block size, in bits, of the given block-cipher
int	getKeySize() Returns the key size, in bits, of the given block-cipher
static java.lang.String	getProviderName()
void	initialize(byte[] key) Initializes the cipher context with the given key.

Methods inherited from class java.lang.Object

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

Field Detail

AesCtrProvider

public static final java.security.Provider AesCtrProvider

Constructor Detail

Rijndael

public Rijndael(int keysize,
                int blocksize)
         throws UnsupportedCipherException

Create a Rijndael instance.

Parameters:

keysize - The key size.

blocksize - The block size.

Throws:

UnsupportedCipherException

Rijndael

public Rijndael()

Method Detail

getProviderName

public static java.lang.String getProviderName()

getBlockSize

public final int getBlockSize()

Description copied from interface: BlockCipher

Returns the block size, in bits, of the given block-cipher

Specified by:

getBlockSize in interface BlockCipher

getKeySize

public final int getKeySize()

Description copied from interface: BlockCipher

Returns the key size, in bits, of the given block-cipher

Specified by:

getKeySize in interface BlockCipher

initialize

public final void initialize(byte[] key)

Description copied from interface: BlockCipher

Initializes the cipher context with the given key. This might entail performing pre-encryption calculation of subkeys, S-Boxes, etc.

Specified by:

initialize in interface BlockCipher

encipher

public final void encipher(byte[] block,
                           byte[] result)

Description copied from interface: BlockCipher

Enciphers the contents of block where block must be equal to getBlockSize()/8. The result is placed in result and, too has to have length getBlockSize()/8. Block and result may refer to the same array. Warning: It is not a guarantee that block will not be over- written in the course of the algorithm

Specified by:

encipher in interface BlockCipher

decipher

public final void decipher(byte[] block,
                           byte[] result)

Description copied from interface: BlockCipher

Deciphers the contents of block where block must be equal to getBlockSize()/8. The result is placed in result and, too has to have length getBlockSize()/8. Block and result may refer to the same array. Warning: It is not a guarantee that block will not be over- written in the course of the algorithm

Specified by:

decipher in interface BlockCipher