This abstract class defines the
service-provider interface for Cipher. A
cryptographic provider must implement a concrete subclass of this
class for each encryption algorithm it supports. A provider can
implement a separate class for each combination of algorithm, mode,
and padding scheme it supports or implement more general classes and
leave the mode and/or padding scheme to be specified in calls to
engineSetMode( ) and engineSetPadding(
). Applications never need to use or subclass this class.public abstract class CipherSpi {
// Public Constructors
public CipherSpi ( );
// Protected Instance Methods
5.0 protected int engineDoFinal (java.nio.ByteBuffer input , java.nio.ByteBuffer output )
throws ShortBufferException, IllegalBlockSizeException, BadPaddingException;
protected abstract byte[ ] engineDoFinal (byte[ ] input , int inputOffset , int inputLen )
throws IllegalBlockSizeException, BadPaddingException;
protected abstract int engineDoFinal (byte[ ] input , int inputOffset , int inputLen ,
byte[ ] output , int outputOffset )
throws ShortBufferException, IllegalBlockSizeException, BadPaddingException;
protected abstract int engineGetBlockSize ( );
protected abstract byte[ ] engineGetIV ( );
protected int engineGetKeySize (java.security.Key key )
throws java.security.InvalidKeyException;
protected abstract int engineGetOutputSize (int inputLen );
protected abstract java.security.AlgorithmParameters engineGetParameters ( );
protected abstract void engineInit (int opmode , java.security.Key key ,
java.security.SecureRandom random )
throws java.security.InvalidKeyException;
protected abstract void engineInit (int opmode , java.security.Key key ,
java.security.AlgorithmParameters params ,
java.security.SecureRandom random )
throws java.security.InvalidKeyException,
java.security.InvalidAlgorithmParameterException;
protected abstract void engineInit (int opmode , java.security.Key key ,
java.security.spec.AlgorithmParameterSpec params ,
java.security.SecureRandom rando m )
throws java.security.InvalidKeyException,
java.security.InvalidAlgorithmParameterException;
protected abstract void engineSetMode (String mode )
throws java.security.NoSuchAlgorithmException;
protected abstract void engineSetPadding (String padding ) throws NoSuchPaddingException;
protected java.security.Key engineUnwrap (byte[ ] wrappedKey , String wrappedKeyAlgorithm ,
int wrappedKeyType )
throws java.security.InvalidKeyException,
java.security.NoSuchAlgorithmException;
5.0 protected int engineUpdate (java.nio.ByteBuffer input , java.nio.ByteBuffer output )
throws ShortBufferException;
protected abstract byte[ ] engineUpdate (byte[ ] input , int inputOffset , int inputLen );
protected abstract int engineUpdate (byte[ ] input , int inputOffset , int inputLen ,
byte[ ] output , int outputOffset )
throws ShortBufferException;
protected byte[ ] engineWrap (java.security.Key key )
throws IllegalBlockSizeException, java.security.InvalidKeyException;
}
Passed To
Cipher.Cipher( ) |
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