/*
 * =============================================================================
 * 
 *   Copyright (c) 2007-2010, The JASYPT team (http://www.jasypt.org)
 * 
 *   Licensed under the Apache License, Version 2.0 (the "License");
 *   you may not use this file except in compliance with the License.
 *   You may obtain a copy of the License at
 * 
 *       http://www.apache.org/licenses/LICENSE-2.0
 * 
 *   Unless required by applicable law or agreed to in writing, software
 *   distributed under the License is distributed on an "AS IS" BASIS,
 *   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *   See the License for the specific language governing permissions and
 *   limitations under the License.
 * 
 * =============================================================================
 */
package org.jasypt.util.text;

import org.jasypt.encryption.pbe.StandardPBEStringEncryptor;


Utility class for easily performing high-strength encryption of texts.

 This class internally holds a StandardPBEStringEncryptor configured this way: 

  
Algorithm: PBEWithMD5AndTripleDES.
  
Key obtention iterations: 1000.



The required steps to use it are:

  
Create an instance (using new).
  
Set a password (using setPassword(String) or
      setPasswordCharArray(char[])).
  
Perform the desired encrypt(String) or 
      decrypt(String) operations.
 
 


To use this class, you may need to download and install the
Java
Cryptography Extension (JCE) Unlimited Strength Jurisdiction Policy 
Files. 


This class is thread-safe.

Author:
Daniel Fernández
Since:
1.2 (class existed in org.jasypt.util package since 1.0)/**
 * <p>
 * Utility class for easily performing high-strength encryption of texts.
 * </p>
 * <p>
 * This class internally holds a {@link StandardPBEStringEncryptor} 
 * configured this way:
 * <ul>
 *   <li>Algorithm: <tt>PBEWithMD5AndTripleDES</tt>.</li>
 *   <li>Key obtention iterations: <tt>1000</tt>.</li>
 * </ul>
 * </p>
 * <p>
 * The required steps to use it are:
 * <ol>
 *   <li>Create an instance (using <tt>new</tt>).</li>
 *   <li>Set a password (using <tt>{@link #setPassword(String)}</tt> or
 *       <tt>{@link #setPasswordCharArray(char[])}</tt>).</li>
 *   <li>Perform the desired <tt>{@link #encrypt(String)}</tt> or 
 *       <tt>{@link #decrypt(String)}</tt> operations.</li> 
 * </ol> 
 * </p>
 * <p>
 * To use this class, you may need to download and install the
 * <a href="http://java.sun.com/javase/downloads" target="_blank"><i>Java
 * Cryptography Extension (JCE) Unlimited Strength Jurisdiction Policy 
 * Files</i></a>. 
 * </p>
 * <p>
 * This class is <i>thread-safe</i>.
 * </p>
 * 
 * @since 1.2 (class existed in org.jasypt.util package since 1.0)
 * 
 * @author Daniel Fern&aacute;ndez
 * 
 */
public final class StrongTextEncryptor implements TextEncryptor {

    
    // The internal encryptor 
    private final StandardPBEStringEncryptor encryptor;
    
    

    
Creates a new instance of StrongTextEncryptor.
/**
     * Creates a new instance of <tt>StrongTextEncryptor</tt>.
     */
    public StrongTextEncryptor() {
        super();
        this.encryptor = new StandardPBEStringEncryptor();
        this.encryptor.setAlgorithm("PBEWithMD5AndTripleDES");
    }

    
    
Sets a password.
Params:
password – the password to be set./**
     * Sets a password.
     * 
     * @param password the password to be set.
     */
    public void setPassword(final String password) {
        this.encryptor.setPassword(password);
    }

    
    
Sets a password, as a char[].
Params:
password – the password to be set.
Since:
1.8/**
     * Sets a password, as a char[].
     * 
     * @since 1.8
     * @param password the password to be set.
     */
    public void setPasswordCharArray(final char[] password) {
        this.encryptor.setPasswordCharArray(password);
    }

    
    
Encrypts a message.
Params:
message – the message to be encrypted.
See Also:
StandardPBEStringEncryptor.encrypt(String)/**
     * Encrypts a message.
     * 
     * @param message the message to be encrypted.
     * @see StandardPBEStringEncryptor#encrypt(String)
     */
    public String encrypt(final String message) {
        return this.encryptor.encrypt(message);
    }
    

    
Decrypts a message.
Params:
encryptedMessage – the message to be decrypted.
See Also:
StandardPBEStringEncryptor.decrypt(String)/**
     * Decrypts a message.
     * 
     * @param encryptedMessage the message to be decrypted.
     * @see StandardPBEStringEncryptor#decrypt(String)
     */
    public String decrypt(final String encryptedMessage) {
        return this.encryptor.decrypt(encryptedMessage);
    }
    
}