CipherSpi

CipherSpi

javax.crypto

---

Java 1.4

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( )