org.bouncycastle.crypto.engines
Class DESEngine
java.lang.Object
org.bouncycastle.crypto.engines.DESEngine
- BlockCipher
public class DESEngine
extends java.lang.Object
a class that provides a basic DES engine.
protected void | desFunc(int[] wKey, byte[] in, int inOff, byte[] out, int outOff) - the DES engine.
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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.
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String | getAlgorithmName()
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int | getBlockSize()
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void | init(boolean encrypting, CipherParameters params) - initialise a DES cipher.
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int | processBlock(byte[] in, int inOff, byte[] out, int outOff)
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void | reset()
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BLOCK_SIZE
protected static final int BLOCK_SIZE
DESEngine
public DESEngine()
standard constructor.
desFunc
protected void desFunc(int[] wKey,
byte[] in,
int inOff,
byte[] out,
int outOff)
the DES engine.
generateWorkingKey
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.
Acknowledgements for this routine go to James Gillogly & Phil Karn.
(whoever, and wherever they are!).
init
public void init(boolean encrypting,
CipherParameters params)
initialise a DES cipher.
- init in interface BlockCipher
encrypting
- whether or not we are for encryption.params
- the parameters required to set up the cipher.
processBlock
public int processBlock(byte[] in,
int inOff,
byte[] out,
int outOff)
- processBlock in interface BlockCipher