BlockCipher
DESedeEngine
public class DESEngine extends java.lang.Object implements BlockCipher
Modifier and Type | Field | Description |
---|---|---|
protected static int |
BLOCK_SIZE |
Constructor | Description |
---|---|
DESEngine() |
standard constructor.
|
Modifier and Type | Method | Description |
---|---|---|
protected void |
desFunc(int[] wKey,
byte[] in,
int inOff,
byte[] out,
int outOff) |
the DES engine.
|
protected int[] |
generateWorkingKey(boolean encrypting,
byte[] key) |
generate an integer based working key based on our secret key
and what we processing we are planning to do.
|
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 encrypting,
CipherParameters params) |
initialise a DES cipher.
|
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 final int BLOCK_SIZE
public void init(boolean encrypting, CipherParameters params)
init
in interface BlockCipher
encrypting
- whether or not we are for encryption.params
- the parameters required to set up the cipher.java.lang.IllegalArgumentException
- if the params argument is
inappropriate.public java.lang.String getAlgorithmName()
BlockCipher
getAlgorithmName
in interface BlockCipher
public int getBlockSize()
BlockCipher
getBlockSize
in interface BlockCipher
public int processBlock(byte[] in, int inOff, byte[] out, int outOff)
BlockCipher
processBlock
in interface BlockCipher
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.public void reset()
BlockCipher
reset
in interface BlockCipher
protected int[] generateWorkingKey(boolean encrypting, byte[] key)
protected void desFunc(int[] wKey, byte[] in, int inOff, byte[] out, int outOff)