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javax.crypto
Class SealedObject  

java.lang.Object
  javax.crypto.SealedObject

All Implemented Interfaces:

java.io.Serializable

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public class SealedObject

extends java.lang.Object

implements java.io.Serializable

This class allows any java.io.Serializable object to be stored in an encrypted form.

When the sealed object is ready to be unsealed (and deserialized) the caller may use either

1. getObject(javax.crypto.Cipher) 55 , which uses an already-initialized Cipher.
   
   or,
2. getObject(java.security.Key) 55 or getObject(java.security.Key,java.lang.String) 55 , which will initialize a new cipher instance with the encodedParams 55 that were stored with this sealed object (this is so parameters, such as the IV, don't need to be known by the one unsealing the object).

Since:

1.4

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Field Summary
protected  byte[]	encodedParams           The encoded algorithm parameters.
private  byte[]	encryptedContent           The serialized, encrypted object.
private  java.lang.String	paramsAlg           The parameter type.
private  java.lang.String	sealAlg           The algorithm used to seal the object.
private  Cipher	sealCipher           The cipher that decrypts when this object is unsealed.
private static long	serialVersionUID           Compatible with JDK1.4.

 

Constructor Summary
protected	SealedObject(SealedObject so)           Create a new sealed object from another sealed object.
	SealedObject(java.io.Serializable object, Cipher cipher)           Create a new sealed object from a java.io.Serializable object and a cipher.

 

Method Summary
java.lang.String	getAlgorithm()           Get the name of the algorithm used to seal this object.
java.lang.Object	getObject(Cipher cipher)           Unseal and deserialize this sealed object with a specified (already initialized) cipher.
java.lang.Object	getObject(java.security.Key key)           Unseal and deserialize this sealed object with the specified key.
java.lang.Object	getObject(java.security.Key key, java.lang.String provider)           Unseal and deserialize this sealed object with the specified key, using a cipher from the named provider.
private  void	readObject(java.io.ObjectInputStream ois)           Deserialize this object.
private  java.lang.Object	unseal()           Unseal this object, returning it.
private  void	writeObject(java.io.ObjectOutputStream oos)           Serialize this object.

 

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

 

Field Detail

encodedParams

protected byte[] encodedParams

The encoded algorithm parameters.

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encryptedContent

private byte[] encryptedContent

The serialized, encrypted object.

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sealAlg

private java.lang.String sealAlg

The algorithm used to seal the object.

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paramsAlg

private java.lang.String paramsAlg

The parameter type.

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sealCipher

private transient Cipher sealCipher

The cipher that decrypts when this object is unsealed.

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serialVersionUID

private static final long serialVersionUID

Compatible with JDK1.4.

See Also:

Constant Field Values

Constructor Detail

SealedObject

public SealedObject(java.io.Serializable object,
                    Cipher cipher)
             throws java.io.IOException,
                    IllegalBlockSizeException

Create a new sealed object from a java.io.Serializable object and a cipher.

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SealedObject

protected SealedObject(SealedObject so)

Create a new sealed object from another sealed object.

Method Detail

getAlgorithm

public final java.lang.String getAlgorithm()

Get the name of the algorithm used to seal this object.

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getObject

public final java.lang.Object getObject(Cipher cipher)
                                 throws java.io.IOException,
                                        java.lang.ClassNotFoundException,
                                        IllegalBlockSizeException,
                                        BadPaddingException

Unseal and deserialize this sealed object with a specified (already initialized) cipher.

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getObject

public final java.lang.Object getObject(java.security.Key key)
                                 throws java.io.IOException,
                                        java.lang.ClassNotFoundException,
                                        java.security.InvalidKeyException,
                                        java.security.NoSuchAlgorithmException

Unseal and deserialize this sealed object with the specified key.

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getObject

public final java.lang.Object getObject(java.security.Key key,
                                        java.lang.String provider)
                                 throws java.io.IOException,
                                        java.lang.ClassNotFoundException,
                                        java.security.InvalidKeyException,
                                        java.security.NoSuchAlgorithmException,
                                        java.security.NoSuchProviderException

Unseal and deserialize this sealed object with the specified key, using a cipher from the named provider.

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readObject

private void readObject(java.io.ObjectInputStream ois)
                 throws java.io.IOException,
                        java.lang.ClassNotFoundException

Deserialize this object.

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writeObject

private void writeObject(java.io.ObjectOutputStream oos)
                  throws java.io.IOException

Serialize this object.

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unseal

private java.lang.Object unseal()
                         throws java.io.IOException,
                                java.lang.ClassNotFoundException,
                                IllegalBlockSizeException,
                                BadPaddingException

Unseal this object, returning it.

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Overview  Package   Class  Use  Deprecated  Index
Home >> All >> javax >> [ crypto overview ]	PREV CLASS  NEXT CLASS
SUMMARY:  JAVADOC |  SOURCE |  DOWNLOAD | NESTED | FIELD | CONSTR | METHOD	DETAIL: FIELD | CONSTR | METHOD

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