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/*
 * =============================================================================
 * 
 *   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.wicket13;

import org.apache.wicket.WicketRuntimeException;
import org.apache.wicket.util.crypt.Base64UrlSafe;
import org.apache.wicket.util.crypt.ICrypt;
import org.jasypt.encryption.pbe.PBEByteEncryptor;


/**
 * 

* Jasypt's implementation of {@link ICrypt}, based on the use of a * {@link PBEByteEncryptor} object for encryption and decryption operations. *

*

* This class is thread-safe. *

* * @since 1.9.0 * @author Daniel Fernández * */ public final class JasyptCrypt implements ICrypt { // Encoding used to convert java String from and to byte[] private static final String CHARACTER_ENCODING = "UTF-8"; // The wrapped encryptor private final PBEByteEncryptor encryptor; /** *

* Creates a new JasyptCrypt object, wrapping the passed * encryptor. *

* * @param encryptor the PBEByteEncryptor to be used internally. */ public JasyptCrypt(final PBEByteEncryptor encryptor) { this.encryptor = encryptor; } /** *

* Decrypts a string using URL and filename safe Base64 decoding. *

* * @param text the text to be decrypted. * @return the decrypted string. */ public String decryptUrlSafe(final String text) { try { final byte[] base64EncryptedBytes = text.getBytes(); final byte[] encryptedBytes = Base64UrlSafe.decodeBase64(base64EncryptedBytes); return new String( this.encryptor.decrypt(encryptedBytes), CHARACTER_ENCODING); } catch (Exception e) { throw new WicketRuntimeException(e); } } /** *

* Encrypts a string using URL and filename safe Base64 encoding. *

* * @param plainText the text to be encrypted. * @return encrypted string. */ public String encryptUrlSafe(final String plainText) { try { final byte[] plainBytes = plainText.getBytes(CHARACTER_ENCODING); final byte[] encryptedBytes = this.encryptor.encrypt(plainBytes); return new String(Base64UrlSafe.encodeBase64(encryptedBytes)); } catch (Exception e) { throw new WicketRuntimeException(e); } } /** *

* Important: Using jasypt, it makes no sense to change the encryption * key once the encryptor has been initialized, and so this method is * implemented to throw UnsupportedOperationException always. *

*/ public void setKey(final String key) { throw new UnsupportedOperationException( "JasyptCrypt encryptors cannot be set password by calling " + ICrypt.class.getName() + ".setKey()"); } }




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