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cryptix.jce.provider.cipher
Class Null
java.lang.Objectjavax.crypto.CipherSpi
- public final class Null
- extends javax.crypto.CipherSpi
Null cipher (identity transformation).
- Version:
- $Revision: 1.6 $
| Field Summary | |
private static int |
BLOCK_SIZE
The block size of this cipher. |
| Constructor Summary | |
Null()
|
|
| Method Summary | |
java.lang.Object |
clone()
Always throws a CloneNotSupportedException (cloning of ciphers is not supported for security reasons). |
protected byte[] |
engineDoFinal(byte[] input,
int inputOffset,
int inputLen)
Finishes a multi-part transformation or transforms a portion of a byte array, and returns the transformed bytes. |
protected int |
engineDoFinal(byte[] input,
int inputOffset,
int inputLen,
byte[] output,
int outputOffset)
Finishes a multi-part transformation or transforms a portion of a byte array, and stores the transformed bytes in the supplied array. |
int |
engineGetBlockSize()
Returns the length of an input block, in bytes. |
protected byte[] |
engineGetIV()
We don't use IVs. |
protected int |
engineGetOutputSize(int inputLen)
Return output size given input length. |
protected java.security.AlgorithmParameters |
engineGetParameters()
Returns the parameters that this cipher is using. |
protected void |
engineInit(int opmode,
java.security.Key key,
java.security.spec.AlgorithmParameterSpec params,
java.security.SecureRandom random)
Initializes this cipher with an operation mode, key, parameters, and source of randomness. |
protected void |
engineInit(int opmode,
java.security.Key key,
java.security.AlgorithmParameters params,
java.security.SecureRandom random)
Initializes this cipher with an operation mode, key, parameters, and source of randomness. |
protected void |
engineInit(int opmode,
java.security.Key key,
java.security.SecureRandom random)
Initializes this cipher with an operation mode, key, and source of randomness. |
protected void |
engineSetMode(java.lang.String mode)
Set the mode in which this cipher is to run. |
protected void |
engineSetPadding(java.lang.String padding)
Set the method with which the input is to be padded. |
protected byte[] |
engineUpdate(byte[] input,
int inputOffset,
int inputLen)
Continue with a multi-part transformation, returning a new array of the transformed bytes. |
protected int |
engineUpdate(byte[] input,
int inputOffset,
int inputLen,
byte[] output,
int outputOffset)
Continue with a multi-part transformation, storing the transformed bytes into the specified array. |
private int |
internalUpdate(byte[] input,
int inputOffset,
int inputLen,
byte[] output,
int outputOffset)
|
| Methods inherited from class javax.crypto.CipherSpi |
engineDoFinal, engineGetKeySize, engineUnwrap, engineUpdate, engineWrap |
| Methods inherited from class java.lang.Object |
equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
| Field Detail |
BLOCK_SIZE
private static final int BLOCK_SIZE
- The block size of this cipher. Being a stream cipher this value
is 1!
- See Also:
- Constant Field Values
| Constructor Detail |
Null
public Null()
| Method Detail |
clone
public final java.lang.Object clone() throws java.lang.CloneNotSupportedException
- Always throws a CloneNotSupportedException (cloning of ciphers is not
supported for security reasons).
engineSetMode
protected final void engineSetMode(java.lang.String mode) throws java.security.NoSuchAlgorithmException
- Description copied from class:
javax.crypto.CipherSpi - Set the mode in which this cipher is to run.
engineSetPadding
protected final void engineSetPadding(java.lang.String padding) throws javax.crypto.NoSuchPaddingException
- Description copied from class:
javax.crypto.CipherSpi - Set the method with which the input is to be padded.
engineGetBlockSize
public int engineGetBlockSize()
- Returns the length of an input block, in bytes.
engineGetOutputSize
protected final int engineGetOutputSize(int inputLen)
- Return output size given input length. We don't buffer so this method
always returns inputLen.
engineGetIV
protected final byte[] engineGetIV()
- We don't use IVs.
FIXME: maybe return whatever was set?
engineGetParameters
protected final java.security.AlgorithmParameters engineGetParameters()
- Description copied from class:
javax.crypto.CipherSpi - Returns the parameters that this cipher is using. This may be the
parameters used to initialize this cipher, or it may be parameters
that have been initialized with random values.
engineInit
protected final void engineInit(int opmode,
java.security.Key key,
java.security.SecureRandom random)
throws java.security.InvalidKeyException
- Description copied from class:
javax.crypto.CipherSpi - Initializes this cipher with an operation mode, key, and source of
randomness. If this cipher requires any other initializing data,
for example an initialization vector, then it should generate it
from the provided source of randomness.
engineInit
protected final void engineInit(int opmode,
java.security.Key key,
java.security.spec.AlgorithmParameterSpec params,
java.security.SecureRandom random)
throws java.security.InvalidKeyException,
java.security.InvalidAlgorithmParameterException
- Description copied from class:
javax.crypto.CipherSpi - Initializes this cipher with an operation mode, key, parameters,
and source of randomness. If this cipher requires any other
initializing data, for example an initialization vector, then it should
generate it from the provided source of randomness.
engineInit
protected final void engineInit(int opmode,
java.security.Key key,
java.security.AlgorithmParameters params,
java.security.SecureRandom random)
throws java.security.InvalidKeyException,
java.security.InvalidAlgorithmParameterException
- Description copied from class:
javax.crypto.CipherSpi - Initializes this cipher with an operation mode, key, parameters,
and source of randomness. If this cipher requires any other
initializing data, for example an initialization vector, then it should
generate it from the provided source of randomness.
engineUpdate
protected final int engineUpdate(byte[] input,
int inputOffset,
int inputLen,
byte[] output,
int outputOffset)
throws javax.crypto.ShortBufferException
- Description copied from class:
javax.crypto.CipherSpi - Continue with a multi-part transformation, storing the transformed
bytes into the specified array.
engineUpdate
protected final byte[] engineUpdate(byte[] input,
int inputOffset,
int inputLen)
- Description copied from class:
javax.crypto.CipherSpi - Continue with a multi-part transformation, returning a new array of
the transformed bytes.
engineDoFinal
protected final int engineDoFinal(byte[] input,
int inputOffset,
int inputLen,
byte[] output,
int outputOffset)
throws javax.crypto.ShortBufferException,
javax.crypto.IllegalBlockSizeException,
javax.crypto.BadPaddingException
- Description copied from class:
javax.crypto.CipherSpi - Finishes a multi-part transformation or transforms a portion of a
byte array, and stores the transformed bytes in the supplied array.
engineDoFinal
protected final byte[] engineDoFinal(byte[] input,
int inputOffset,
int inputLen)
throws javax.crypto.IllegalBlockSizeException,
javax.crypto.BadPaddingException
- Description copied from class:
javax.crypto.CipherSpi - Finishes a multi-part transformation or transforms a portion of a
byte array, and returns the transformed bytes.
internalUpdate
private final int internalUpdate(byte[] input,
int inputOffset,
int inputLen,
byte[] output,
int outputOffset)
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SUMMARY: JAVADOC | SOURCE | DOWNLOAD | NESTED | FIELD | CONSTR | METHOD |
DETAIL: FIELD | CONSTR | METHOD | ||||||||