java.lang.Object
javax.crypto.CipherSpi
cryptix.jce.provider.cipher.BlockCipher
cryptix.jce.provider.cipher.SKIPJACK
- public final class SKIPJACK
- extends BlockCipher
SKIPJACK
- Version:
- $Revision: 1.5 $
|
Field Summary |
private static int |
BLOCK_SIZE
|
private boolean |
decrypt
We are in decrypt mode |
private static int[] |
F
|
private int[] |
K
Twelf-byte array of subkeys. |
private static int |
KEY_LENGTH
|
| Fields inherited from class cryptix.jce.provider.cipher.BlockCipher |
|
|
Method Summary |
private void |
blockDecrypt(byte[] in,
int inOffset,
byte[] out,
int outOffset)
Decrypt a single block. |
private void |
blockEncrypt(byte[] in,
int inOffset,
byte[] out,
int outOffset)
Encrypt a single, 8-byte block. |
protected void |
coreCrypt(byte[] in,
int inOffset,
byte[] out,
int outOffset)
Encrypt a given buffer. |
protected void |
coreInit(java.security.Key key,
boolean decrypt)
|
private int |
G(int in,
int counter)
G-function used by blockEncrypt |
private int |
GINV(int in,
int counter)
G-inverse function used by blockDecrypt |
| Methods inherited from class cryptix.jce.provider.cipher.BlockCipher |
clone, coreGetBlockSize, engineDoFinal, engineDoFinal, engineGetBlockSize, engineGetIV, engineGetKeySize, engineGetOutputSize, engineGetParameters, engineInit, engineInit, engineInit, engineSetMode, engineSetPadding, engineUpdate, engineUpdate |
BLOCK_SIZE
private static final int BLOCK_SIZE
- See Also:
- Constant Field Values
KEY_LENGTH
private static final int KEY_LENGTH
- See Also:
- Constant Field Values
F
private static final int[] F
K
private final int[] K
- Twelf-byte array of subkeys. It's 12 to save on modulus operations.
The last 2 bytes must be equal to the first two bytes.
decrypt
private boolean decrypt
- We are in decrypt mode
SKIPJACK
public SKIPJACK()
coreInit
protected void coreInit(java.security.Key key,
boolean decrypt)
throws java.security.InvalidKeyException
- Specified by:
coreInit in class BlockCipher
coreCrypt
protected void coreCrypt(byte[] in,
int inOffset,
byte[] out,
int outOffset)
- Description copied from class:
BlockCipher
- Encrypt a given buffer. in and out can point to the same buffer if
(outOffset == inOffset) || (outOffset >= (inOffset+coreGetBlockSize))
That is: the buffers may not partially overlap...
- Specified by:
coreCrypt in class BlockCipher
blockEncrypt
private final void blockEncrypt(byte[] in,
int inOffset,
byte[] out,
int outOffset)
- Encrypt a single, 8-byte block. Input and output may overlap.
G
private final int G(int in,
int counter)
- G-function used by blockEncrypt
blockDecrypt
private final void blockDecrypt(byte[] in,
int inOffset,
byte[] out,
int outOffset)
- Decrypt a single block. Input and output may overlap.
GINV
private final int GINV(int in,
int counter)
- G-inverse function used by blockDecrypt
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