org.spongycastle.crypto.engines

Class ARIAEngine

java.lang.Object

org.spongycastle.crypto.engines.ARIAEngine

All Implemented Interfaces:

BlockCipher

public class ARIAEngine
extends java.lang.Object
implements BlockCipher

RFC 5794. ARIA is a 128-bit block cipher with 128-, 192-, and 256-bit keys.

Field Summary

Fields

Modifier and Type	Field and Description
protected static int	BLOCK_SIZE

Constructor Summary

Constructors

Constructor and Description
ARIAEngine()

Method Summary

Modifier and Type	Method and Description
protected static void	A(byte[] z)
protected static void	FE(byte[] D, byte[] RK)
protected static void	FO(byte[] D, byte[] RK)
java.lang.String	getAlgorithmName() Return the name of the algorithm the cipher implements.
int	getBlockSize() Return the block size for this cipher (in bytes).
void	init(boolean forEncryption, CipherParameters params) Initialise the cipher.
protected static byte[][]	keySchedule(boolean forEncryption, byte[] K)
protected static void	keyScheduleRound(byte[] rk, byte[] w, byte[] wr, int n)
int	processBlock(byte[] in, int inOff, byte[] out, int outOff) Process one block of input from the array in and write it to the out array.
void	reset() Reset the cipher.
protected static void	reverseKeys(byte[][] keys)
protected static byte	SB1(byte x)
protected static byte	SB2(byte x)
protected static byte	SB3(byte x)
protected static byte	SB4(byte x)
protected static void	SL1(byte[] z)
protected static void	SL2(byte[] z)
protected static void	xor(byte[] z, byte[] x)

Methods inherited from class java.lang.Object

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

Field Detail

BLOCK_SIZE

protected static final int BLOCK_SIZE

See Also:

Constant Field Values

Constructor Detail

ARIAEngine

public ARIAEngine()

Method Detail

init

public void init(boolean forEncryption,
                 CipherParameters params)
          throws java.lang.IllegalArgumentException

Description copied from interface: BlockCipher

Initialise the cipher.

Specified by:

init in interface BlockCipher

Parameters:

forEncryption - if true the cipher is initialised for encryption, if false for decryption.

params - the key and other data required by the cipher.

Throws:

java.lang.IllegalArgumentException - if the params argument is inappropriate.

getAlgorithmName

public java.lang.String getAlgorithmName()

Description copied from interface: BlockCipher

Return the name of the algorithm the cipher implements.

Specified by:

getAlgorithmName in interface BlockCipher

Returns:

the name of the algorithm the cipher implements.

getBlockSize

public int getBlockSize()

Description copied from interface: BlockCipher

Return the block size for this cipher (in bytes).

Specified by:

getBlockSize in interface BlockCipher

Returns:

the block size for this cipher in bytes.

processBlock

public int processBlock(byte[] in,
                        int inOff,
                        byte[] out,
                        int outOff)
                 throws DataLengthException,
                        java.lang.IllegalStateException

Description copied from interface: BlockCipher

Process one block of input from the array in and write it to the out array.

Specified by:

processBlock in interface BlockCipher

Parameters:

in - the array containing the input data.

inOff - offset into the in array the data starts at.

out - the array the output data will be copied into.

outOff - the offset into the out array the output will start at.

Returns:

the number of bytes processed and produced.

Throws:

DataLengthException - if there isn't enough data in in, or space in out.

java.lang.IllegalStateException - if the cipher isn't initialised.

reset

public void reset()

Description copied from interface: BlockCipher

Reset the cipher. After resetting the cipher is in the same state as it was after the last init (if there was one).

Specified by:

reset in interface BlockCipher

A

protected static void A(byte[] z)

FE

protected static void FE(byte[] D,
                         byte[] RK)

FO

protected static void FO(byte[] D,
                         byte[] RK)

keySchedule

protected static byte[][] keySchedule(boolean forEncryption,
                                      byte[] K)

keyScheduleRound

protected static void keyScheduleRound(byte[] rk,
                                       byte[] w,
                                       byte[] wr,
                                       int n)

reverseKeys

protected static void reverseKeys(byte[][] keys)

SB1

protected static byte SB1(byte x)

SB2

protected static byte SB2(byte x)

SB3

protected static byte SB3(byte x)

SB4

protected static byte SB4(byte x)

SL1

protected static void SL1(byte[] z)

SL2

protected static void SL2(byte[] z)

xor

protected static void xor(byte[] z,
                          byte[] x)