| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You 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.apache.wicket.core.util.crypt; |
| |
| import org.apache.wicket.util.crypt.ICrypt; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import java.nio.charset.StandardCharsets; |
| import java.security.GeneralSecurityException; |
| import java.util.Base64; |
| |
| |
| /** |
| * Base class for JCE based ICrypt implementations. |
| * |
| */ |
| public abstract class AbstractJceCrypt implements ICrypt |
| { |
| /** Log. */ |
| private static final Logger log = LoggerFactory.getLogger(AbstractJceCrypt.class); |
| |
| /** |
| * Decrypts a string into a string. |
| * |
| * @param text |
| * text to decrypt |
| * @return the decrypted text |
| */ |
| @Override |
| public final String decryptUrlSafe(final String text) |
| { |
| try |
| { |
| byte[] decoded = java.util.Base64.getUrlDecoder().decode(text); |
| return new String(decrypt(decoded), StandardCharsets.UTF_8); |
| } |
| catch (Exception ex) |
| { |
| log.debug("Error decoding text: {}", text, ex); |
| return null; |
| } |
| } |
| |
| /** |
| * Encrypt a string into a string using URL safe Base64 encoding. |
| * |
| * @param plainText |
| * text to encrypt |
| * @return encrypted string |
| */ |
| @Override |
| public final String encryptUrlSafe(final String plainText) |
| { |
| byte[] encrypted = encrypt(plainText.getBytes(StandardCharsets.UTF_8)); |
| Base64.Encoder encoder = Base64.getUrlEncoder().withoutPadding(); |
| byte[] encoded = encoder.encode(encrypted); |
| return new String(encoded, StandardCharsets.UTF_8); |
| } |
| |
| /** |
| * Decrypts an encrypted byte array. |
| * |
| * @param encrypted |
| * byte array to decrypt |
| * @return the decrypted text |
| */ |
| abstract protected byte[] decrypt(final byte[] encrypted); |
| |
| |
| /** |
| * Encrypts the given text into a byte array. |
| * |
| * @param plainBytes |
| * text to encrypt |
| * @return the string encrypted |
| */ |
| abstract protected byte[] encrypt(final byte[] plainBytes); |
| } |