Bouncy Castle Cryptography Library 1.80 · org.bouncycastle.crypto.engines.DSTU7624Engine

Field Summary

Modifier and Type	Field and Description
private boolean	forEncryption
private long[]	internalState
private long[][]	roundKeys
private static final int	ROUNDS_128
private static final int	ROUNDS_256
private static final int	ROUNDS_512
private int	roundsAmount
private static final byte[]	S0
private static final byte[]	S1
private static final byte[]	S2
private static final byte[]	S3
private static final byte[]	T0
private static final byte[]	T1
private static final byte[]	T2
private static final byte[]	T3
private int	wordsInBlock
private int	wordsInKey
private long[]	workingKey

Constructor Summary

Access	Constructor and Description
public	DSTU7624Engine(int blockBitLength)

Method Summary

Modifier and Type	Method and Description
private void	addRoundKey(int round)
private void	decryptBlock_128(byte[] in, int inOff, byte[] out, int outOff)
private void	encryptBlock_128(byte[] in, int inOff, byte[] out, int outOff)
public String	getAlgorithmName() Implements org.bouncycastle.crypto.BlockCipher.getAlgorithmName. Return the name of the algorithm the cipher implements.
public int	getBlockSize() Implements org.bouncycastle.crypto.BlockCipher.getBlockSize. Return the block size for this cipher (in bytes).
public void	init(boolean if true the cipher is initialised for encryption, if false for decryption. forEncryption, CipherParameters the key and other data required by the cipher. params) Implements org.bouncycastle.crypto.BlockCipher.init. Initialise the cipher.
private void	invShiftRows()
private void	invSubBytes()
private static long	mixColumn(long c)
private static long	mixColumnInv(long c)
private void	mixColumns()
private void	mixColumnsInv()
private static long	mulX(long n)
private static long	mulX2(long n)
public int	processBlock(byte[] the array containing the input data. in, int offset into the in array the data starts at. inOff, byte[] the array the output data will be copied into. out, int the offset into the out array the output will start at. outOff) Implements org.bouncycastle.crypto.BlockCipher.processBlock. Process one block of input from the array in and write it to the out array.
public void	reset() Implements org.bouncycastle.crypto.BlockCipher.reset. Reset the cipher.
private static long	rotate(int n, long x)
private void	rotateLeft(long[] x, long[] z)
private void	shiftRows()
private void	subBytes()
private void	subRoundKey(int round)
private void	workingKeyExpandEven(long[] workingKey, long[] tempKey)
private void	workingKeyExpandKT(long[] workingKey, long[] tempKeys)
private void	workingKeyExpandOdd()
private void	xorRoundKey(int round)

Inherited from java.lang.Object:: clone equals finalize getClass hashCode notify notifyAll toString wait wait wait

Field Detail

forEncryption	back to summary
private boolean forEncryption

internalState	back to summary
private long[] internalState

roundKeys	back to summary
private long[][] roundKeys

ROUNDS_128	back to summary
private static final int ROUNDS_128

ROUNDS_256	back to summary
private static final int ROUNDS_256

ROUNDS_512	back to summary
private static final int ROUNDS_512

roundsAmount	back to summary
private int roundsAmount

S0	back to summary
private static final byte[] S0

S1	back to summary
private static final byte[] S1

S2	back to summary
private static final byte[] S2

S3	back to summary
private static final byte[] S3

T0	back to summary
private static final byte[] T0

T1	back to summary
private static final byte[] T1

T2	back to summary
private static final byte[] T2

T3	back to summary
private static final byte[] T3

wordsInBlock	back to summary
private int wordsInBlock

wordsInKey	back to summary
private int wordsInKey

workingKey	back to summary
private long[] workingKey

Constructor Detail

DSTU7624Engine	back to summary
public DSTU7624Engine(int blockBitLength) throws IllegalArgumentException

Method Detail

addRoundKey	back to summary
private void addRoundKey(int round)

decryptBlock_128	back to summary
private void decryptBlock_128(byte[] in, int inOff, byte[] out, int outOff)

encryptBlock_128	back to summary
private void encryptBlock_128(byte[] in, int inOff, byte[] out, int outOff)

getAlgorithmName	back to summary
public String getAlgorithmName() Implements org.bouncycastle.crypto.BlockCipher.getAlgorithmName. Doc from org.bouncycastle.crypto.BlockCipher.getAlgorithmName. Return the name of the algorithm the cipher implements. Returns:String the name of the algorithm the cipher implements.

getAlgorithmName

back to summary

public String getAlgorithmName()

Implements org.bouncycastle.crypto.BlockCipher.getAlgorithmName.

Doc from org.bouncycastle.crypto.BlockCipher.getAlgorithmName.

Return the name of the algorithm the cipher implements.

Returns:String: the name of the algorithm the cipher implements.

getBlockSize	back to summary
public int getBlockSize() Implements org.bouncycastle.crypto.BlockCipher.getBlockSize. Doc from org.bouncycastle.crypto.BlockCipher.getBlockSize. Return the block size for this cipher (in bytes). Returns:int the block size for this cipher in bytes.

getBlockSize

back to summary

public int getBlockSize()

Implements org.bouncycastle.crypto.BlockCipher.getBlockSize.

Doc from org.bouncycastle.crypto.BlockCipher.getBlockSize.

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

Returns:int: the block size for this cipher in bytes.

init	back to summary
public void init(boolean forEncryption, CipherParameters params) throws IllegalArgumentException Implements org.bouncycastle.crypto.BlockCipher.init. Doc from org.bouncycastle.crypto.BlockCipher.init. Initialise the cipher. Parameters forEncryption:boolean if true the cipher is initialised for encryption, if false for decryption. params:CipherParameters the key and other data required by the cipher. Exceptions IllegalArgumentException: if the params argument is inappropriate.

init

back to summary

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

Implements org.bouncycastle.crypto.BlockCipher.init.

Doc from org.bouncycastle.crypto.BlockCipher.init.

Initialise the cipher.

Parameters

forEncryption:boolean: if true the cipher is initialised for encryption, if false for decryption.
params:CipherParameters: the key and other data required by the cipher.

Exceptions

IllegalArgumentException:: if the params argument is inappropriate.

invShiftRows	back to summary
private void invShiftRows()

invSubBytes	back to summary
private void invSubBytes()

mixColumn	back to summary
private static long mixColumn(long c)

mixColumnInv	back to summary
private static long mixColumnInv(long c)

mixColumns	back to summary
private void mixColumns()

mixColumnsInv	back to summary
private void mixColumnsInv()

mulX	back to summary
private static long mulX(long n)

mulX2	back to summary
private static long mulX2(long n)

processBlock	back to summary
public int processBlock(byte[] in, int inOff, byte[] out, int outOff) throws DataLengthException, IllegalStateException Implements org.bouncycastle.crypto.BlockCipher.processBlock. Doc from org.bouncycastle.crypto.BlockCipher.processBlock. Process one block of input from the array in and write it to the out array. Parameters in:byte[] the array containing the input data. inOff:int offset into the in array the data starts at. out:byte[] the array the output data will be copied into. outOff:int the offset into the out array the output will start at. Returns:int the number of bytes processed and produced. Exceptions DataLengthException: if there isn't enough data in input , or space in out. IllegalStateException: if the cipher isn't initialised.

processBlock

back to summary

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

Implements org.bouncycastle.crypto.BlockCipher.processBlock.

Doc from org.bouncycastle.crypto.BlockCipher.processBlock.

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

Parameters

in:byte[]: the array containing the input data.
inOff:int: offset into the in array the data starts at.
out:byte[]: the array the output data will be copied into.
outOff:int: the offset into the out array the output will start at.

Returns:int

the number of bytes processed and produced.

Exceptions

DataLengthException:: if there isn't enough data in input , or space in out.
IllegalStateException:: if the cipher isn't initialised.

reset	back to summary
public void reset() Implements org.bouncycastle.crypto.BlockCipher.reset. Doc from org.bouncycastle.crypto.BlockCipher.reset. Reset the cipher. After resetting the cipher is in the same state as it was after the last init (if there was one).

reset

back to summary

public void reset()

Implements org.bouncycastle.crypto.BlockCipher.reset.

Doc from org.bouncycastle.crypto.BlockCipher.reset.

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

rotate	back to summary
private static long rotate(int n, long x)

rotateLeft	back to summary
private void rotateLeft(long[] x, long[] z)

shiftRows	back to summary
private void shiftRows()

subBytes	back to summary
private void subBytes()

subRoundKey	back to summary
private void subRoundKey(int round)

workingKeyExpandEven	back to summary
private void workingKeyExpandEven(long[] workingKey, long[] tempKey)

workingKeyExpandKT	back to summary
private void workingKeyExpandKT(long[] workingKey, long[] tempKeys)

workingKeyExpandOdd	back to summary
private void workingKeyExpandOdd()

xorRoundKey	back to summary
private void xorRoundKey(int round)

public Class DSTU7624Engine

Field Summary

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Method Summary

Field Detail

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