Top Description Fields Constructors Methods
org.bouncycastle.crypto.macs

public Class DSTU7624Mac

extends Object
implements Mac
Class Inheritance
All Implemented Interfaces
org.bouncycastle.crypto.Mac
Imports
org.bouncycastle.crypto.CipherParameters, .DataLengthException, .Mac, .OutputLengthException, org.bouncycastle.crypto.engines.DSTU7624Engine, org.bouncycastle.crypto.params.KeyParameter, org.bouncycastle.util.Arrays
Implementation of DSTU7624 MAC mode

Field Summary

Modifier and TypeField and Description
private static final int
BITS_IN_BYTE

private int
blockSize

private byte[]
buf

private int
bufOff

private byte[]
c

private byte[]
cTemp

private DSTU7624Engine
engine

private boolean
initCalled

private byte[]
kDelta

private int
macSize

Constructor Summary

AccessConstructor and Description
public
DSTU7624Mac(int blockBitLength, int q)

Method Summary

Modifier and TypeMethod and Description
public int
doFinal(byte[]
the array the MAC is to be output to.
out, int
the offset into the out buffer the output is to start at.
outOff)

Implements org.bouncycastle.crypto.Mac.doFinal.

Compute the final stage of the MAC writing the output to the out parameter.

public String
getAlgorithmName()

Implements org.bouncycastle.crypto.Mac.getAlgorithmName.

Return the name of the algorithm the MAC implements.

public int
getMacSize()

Implements org.bouncycastle.crypto.Mac.getMacSize.

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

public void
init(CipherParameters
the key and other data required by the MAC.
params)

Implements org.bouncycastle.crypto.Mac.init.

Initialise the MAC.

private void
processBlock(byte[] in, int inOff)

public void
reset()

Implements org.bouncycastle.crypto.Mac.reset.

Reset the MAC.

public void
update(byte
the byte to be processed.
in)

Implements org.bouncycastle.crypto.Mac.update.

add a single byte to the mac for processing.

public void
update(byte[]
the array containing the input.
in, int
the index in the array the data begins at.
inOff, int
the length of the input starting at inOff.
len)

Implements org.bouncycastle.crypto.Mac.update.

private void
xor(byte[] x, int xOff, byte[] y, int yOff, byte[] x_xor_y)

Inherited from java.lang.Object:
cloneequalsfinalizegetClasshashCodenotifynotifyAlltoStringwaitwaitwait

Field Detail

BITS_IN_BYTEback to summary
private static final int BITS_IN_BYTE
blockSizeback to summary
private int blockSize
bufback to summary
private byte[] buf
bufOffback to summary
private int bufOff
cback to summary
private byte[] c
cTempback to summary
private byte[] cTemp
engineback to summary
private DSTU7624Engine engine
initCalledback to summary
private boolean initCalled
kDeltaback to summary
private byte[] kDelta
macSizeback to summary
private int macSize

Constructor Detail

DSTU7624Macback to summary
public DSTU7624Mac(int blockBitLength, int q)

Method Detail

doFinalback to summary
public int doFinal(byte[] out, int outOff) throws DataLengthException, IllegalStateException

Implements org.bouncycastle.crypto.Mac.doFinal.

Doc from org.bouncycastle.crypto.Mac.doFinal.

Compute the final stage of the MAC writing the output to the out parameter.

doFinal leaves the MAC in the same state it was after the last init.

Parameters
out:byte[]

the array the MAC is to be output to.

outOff:int

the offset into the out buffer the output is to start at.

Exceptions
DataLengthException:
if there isn't enough space in out.
IllegalStateException:
if the MAC is not initialised.
getAlgorithmNameback to summary
public String getAlgorithmName()

Implements org.bouncycastle.crypto.Mac.getAlgorithmName.

Doc from org.bouncycastle.crypto.Mac.getAlgorithmName.

Return the name of the algorithm the MAC implements.

Returns:String

the name of the algorithm the MAC implements.

getMacSizeback to summary
public int getMacSize()

Implements org.bouncycastle.crypto.Mac.getMacSize.

Doc from org.bouncycastle.crypto.Mac.getMacSize.

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

Returns:int

the block size for this MAC in bytes.

initback to summary
public void init(CipherParameters params) throws IllegalArgumentException

Implements org.bouncycastle.crypto.Mac.init.

Doc from org.bouncycastle.crypto.Mac.init.

Initialise the MAC.

Parameters
params:CipherParameters

the key and other data required by the MAC.

Exceptions
IllegalArgumentException:
if the params argument is inappropriate.
processBlockback to summary
private void processBlock(byte[] in, int inOff)
resetback to summary
public void reset()

Implements org.bouncycastle.crypto.Mac.reset.

Doc from org.bouncycastle.crypto.Mac.reset.

Reset the MAC. At the end of resetting the MAC should be in the in the same state it was after the last init (if there was one).

updateback to summary
public void update(byte in)

Implements org.bouncycastle.crypto.Mac.update.

Doc from org.bouncycastle.crypto.Mac.update.

add a single byte to the mac for processing.

Parameters
in:byte

the byte to be processed.

updateback to summary
public void update(byte[] in, int inOff, int len)

Implements org.bouncycastle.crypto.Mac.update.

Parameters
in:byte[]

Doc from org.bouncycastle.crypto.Mac.update.

the array containing the input.

inOff:int

Doc from org.bouncycastle.crypto.Mac.update.

the index in the array the data begins at.

len:int

Doc from org.bouncycastle.crypto.Mac.update.

the length of the input starting at inOff.

xorback to summary
private void xor(byte[] x, int xOff, byte[] y, int yOff, byte[] x_xor_y)