org.jasypt.hibernate.encryptor
Class HibernatePBEByteEncryptor

Object
  org.jasypt.hibernate.encryptor.HibernatePBEByteEncryptor

public final class HibernatePBEByteEncryptor
extends Object

Placeholder class for PBEByteEncryptor objects which are eligible for use from Hibernate.

This class acts as a wrapper on a PBEByteEncryptor, allowing to be set a registered name (see setRegisteredName(String)) and performing the needed registry operations against the HibernatePBEEncryptorRegistry.

It is not mandatory that a PBEByteEncryptor be explicitly set with setEncryptor(PBEByteEncryptor). If not, a StandardPBEByteEncryptor object will be created internally and it will be configurable with the setPassword(String)/setPasswordCharArray(char[]), setAlgorithm(String), setKeyObtentionIterations(int), setSaltGenerator(SaltGenerator) and setConfig(PBEConfig) methods.

This class is mainly intended for use from Spring Framework or some other IoC container (if you are not using a container of this kind, please see HibernatePBEEncryptorRegistry). The steps to be performed are the following:

1. Create an object of this class (declaring it).
2. Set its registeredName and, either its wrapped encryptor or its password, algorithm, keyObtentionIterations, saltGenerator and config properties.
3. Declare a typedef in a Hibernate mapping giving its encryptorRegisteredName parameter the same value specified to this object in registeredName.

This in a Spring config file would look like:

 
  ...
  <-- Optional, as the hibernateEncryptor could be directly set an     -->
  <-- algorithm and password.                                          -->
  <bean id="byteEncryptor"
    class="org.jasypt.encryption.pbe.StandardPBEByteEncryptor">
    <property name="algorithm">
        <value>PBEWithMD5AndDES</value>
    </property>
    <property name="password">
        <value>XXXXX</value>
    </property>
  </bean>
  
  <bean id="hibernateEncryptor"
    class="org.jasypt.hibernate.encryptor.HibernatePBEByteEncryptor">
    <property name="registeredName">
        <value>myHibernateByteEncryptor</value>
    </property>
    <property name="encryptor">
        <ref bean="byteEncryptor" />
    </property>
  </bean>
  ...
 

And then in the Hibernate mapping file:

    <typedef name="encrypted" class="org.jasypt.hibernate.type.EncryptedBinaryType">
      <param name="encryptorRegisteredName">myHibernateByteEncryptor</param>
    </typedef>
 

An important thing to note is that, when using HibernatePBEByteEncryptor objects this way to wrap PBEByteEncryptors, it is not necessary to deal with HibernatePBEEncryptorRegistry, because HibernatePBEByteEncryptor objects get automatically registered in the encryptor registry when their setRegisteredName(String) method is called.

Since:

1.2

Author:

Daniel Fernández

Constructor Summary

HibernatePBEByteEncryptor()
Creates a new instance of HibernatePBEByteEncryptor It also creates a StandardPBEByteEncryptor for internal use, which can be overriden by calling setEncryptor(...).

Method Summary

byte[]	decrypt(byte[] encryptedMessage) Decypts a message, delegating to wrapped encryptor
byte[]	encrypt(byte[] message) Encrypts a message, delegating to wrapped encryptor.
PBEByteEncryptor	getEncryptor() Returns the encryptor which this object wraps.
String	getRegisteredName() Returns the name with which the wrapped encryptor is registered at the registry.
void	setAlgorithm(String algorithm) Sets the algorithm to be used by the internal encryptor, if a specific encryptor has not been set with setEncryptor(...).
void	setConfig(PBEConfig config) Sets the PBEConfig to be used by the internal encryptor, if a specific encryptor has not been set with setEncryptor(...).
void	setEncryptor(PBEByteEncryptor encryptor) Sets the PBEByteEncryptor to be held (wrapped) by this object.
void	setKeyObtentionIterations(int keyObtentionIterations) Sets the key obtention iterations to be used by the internal encryptor, if a specific encryptor has not been set with setEncryptor(...).
void	setPassword(String password) Sets the password to be used by the internal encryptor, if a specific encryptor has not been set with setEncryptor(...).
void	setPasswordCharArray(char[] password) Sets the password to be used by the internal encryptor (as a char[]), if a specific encryptor has not been set with setEncryptor(...).
void	setRegisteredName(String registeredName) Sets the registered name of the encryptor and adds it to the registry.
void	setSaltGenerator(SaltGenerator saltGenerator) Sets the salt generator to be used by the internal encryptor, if a specific encryptor has not been set with setEncryptor(...).

Methods inherited from class Object

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

Constructor Detail

HibernatePBEByteEncryptor

public HibernatePBEByteEncryptor()

Creates a new instance of HibernatePBEByteEncryptor It also creates a StandardPBEByteEncryptor for internal use, which can be overriden by calling setEncryptor(...).

Method Detail

getEncryptor

public PBEByteEncryptor getEncryptor()

Returns the encryptor which this object wraps.

Returns:

the encryptor.

setEncryptor

public void setEncryptor(PBEByteEncryptor encryptor)

Sets the PBEByteEncryptor to be held (wrapped) by this object. This method is optional and can be only called once.

Parameters:

encryptor - the encryptor.

setPassword

public void setPassword(String password)

Sets the password to be used by the internal encryptor, if a specific encryptor has not been set with setEncryptor(...).

Parameters:

password - the password to be set for the internal encryptor

setPasswordCharArray

public void setPasswordCharArray(char[] password)

Sets the password to be used by the internal encryptor (as a char[]), if a specific encryptor has not been set with setEncryptor(...).

Parameters:

password - the password to be set for the internal encryptor

Since:

1.8

setAlgorithm

public void setAlgorithm(String algorithm)

Sets the algorithm to be used by the internal encryptor, if a specific encryptor has not been set with setEncryptor(...).

Parameters:

algorithm - the algorithm to be set for the internal encryptor

setKeyObtentionIterations

public void setKeyObtentionIterations(int keyObtentionIterations)

Sets the key obtention iterations to be used by the internal encryptor, if a specific encryptor has not been set with setEncryptor(...).

Parameters:

keyObtentionIterations - to be set for the internal encryptor

setSaltGenerator

public void setSaltGenerator(SaltGenerator saltGenerator)

Sets the salt generator to be used by the internal encryptor, if a specific encryptor has not been set with setEncryptor(...).

Parameters:

saltGenerator - the salt generator to be set for the internal encryptor.

setConfig

public void setConfig(PBEConfig config)

Sets the PBEConfig to be used by the internal encryptor, if a specific encryptor has not been set with setEncryptor(...).

Parameters:

config - the PBEConfig to be set for the internal encryptor

encrypt

public byte[] encrypt(byte[] message)

Encrypts a message, delegating to wrapped encryptor.

Parameters:

message - the message to be encrypted.

Returns:

the encryption result.

decrypt

public byte[] decrypt(byte[] encryptedMessage)

Decypts a message, delegating to wrapped encryptor

Parameters:

encryptedMessage - the message to be decrypted.

Returns:

the result of decryption.

setRegisteredName

public void setRegisteredName(String registeredName)

Sets the registered name of the encryptor and adds it to the registry.

Parameters:

registeredName - the name with which the encryptor will be registered.

getRegisteredName

public String getRegisteredName()

Returns the name with which the wrapped encryptor is registered at the registry.

Returns:

the registered name.