SealedObject

SealedObject

javax.crypto

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Java 1.4

serializable

This class is a wrapper around a serializable object. It serializes the object and encrypts the resulting data stream, thereby protecting the confidentiality of the object. Create a SealedObject by specifying the object to be sealed and a Cipher object to perform the encryption. Retrieve the sealed object by calling getObject( ) and specifying the Cipher or java.security.Key to use for decryption. The SealedObject keeps track of the encryption algorithm and parameters so that a Key object alone can decrypt the object.

Figure 17-9. javax.crypto.SealedObject

 public class  SealedObject  implements Serializable {  // Public Constructors  public  SealedObject  (Serializable  object  , Cipher  c  )          throws java.io.IOException, IllegalBlockSizeException;  // Protected Constructors  protected  SealedObject  (SealedObject  so  );  // Public Instance Methods  public final String  getAlgorithm  ( );        public final Object  getObject  (java.security.Key  key  )         throws java.io.IOException, ClassNotFoundException,          java.security.NoSuchAlgorithmException, java.security.InvalidKeyException;        public final Object  getObject  (Cipher  c  )          throws java.io.IOException, ClassNotFoundException,          IllegalBlockSizeException, BadPaddingException;        public final Object  getObject  (java.security.Key  key  , String  provider  )          throws java.io.IOException, ClassNotFoundException,          java.security.NoSuchAlgorithmException,          java.security.NoSuchProviderException,          java.security.InvalidKeyException;  // Protected Instance Fields  protected byte[ ]  encodedParams  ;   }