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

public Class DESedeEngine

extends DESBase
implements BlockCipher
Class Inheritance
All Implemented Interfaces
org.bouncycastle.crypto.BlockCipher
Imports
org.bouncycastle.crypto.BlockCipher, .CipherParameters, .CryptoServicesRegistrar, .DataLengthException, .OutputLengthException, org.bouncycastle.crypto.constraints.DefaultServiceProperties, org.bouncycastle.crypto.params.KeyParameter
a class that provides a basic DESede (or Triple DES) engine.

Field Summary

Modifier and TypeField and Description
protected static final int
BLOCK_SIZE

Hides org.bouncycastle.crypto.engines.DESBase.BLOCK_SIZE.

private boolean
forEncryption

private int[]
workingKey1

private int[]
workingKey2

private int[]
workingKey3

Constructor Summary

AccessConstructor and Description
public
DESedeEngine()

standard constructor.

Method Summary

Modifier and TypeMethod and Description
private int
bitsOfSecurity()

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
whether or not we are for encryption.
encrypting, CipherParameters
the parameters required to set up the cipher.
params)

Implements org.bouncycastle.crypto.BlockCipher.init.

initialise a DESede cipher.

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.

Inherited from org.bouncycastle.crypto.engines.DESBase:
desFuncgenerateWorkingKey

Field Detail

BLOCK_SIZEback to summary
protected static final int BLOCK_SIZE

Hides org.bouncycastle.crypto.engines.DESBase.BLOCK_SIZE.

forEncryptionback to summary
private boolean forEncryption
workingKey1back to summary
private int[] workingKey1
workingKey2back to summary
private int[] workingKey2
workingKey3back to summary
private int[] workingKey3

Constructor Detail

DESedeEngineback to summary
public DESedeEngine()

standard constructor.

Method Detail

bitsOfSecurityback to summary
private int bitsOfSecurity()
getAlgorithmNameback 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.

getBlockSizeback 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.

initback to summary
public void init(boolean encrypting, CipherParameters params)

Implements org.bouncycastle.crypto.BlockCipher.init.

initialise a DESede cipher.

Parameters
encrypting:boolean

whether or not we are for encryption.

params:CipherParameters

the parameters required to set up the cipher.

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

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.

resetback 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).