| /* |
| * 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. |
| */ |
| |
| /* $Id$ */ |
| |
| package org.apache.fop.pdf; |
| |
| /** |
| * This interface defines the contract for classes implementing PDF encryption. |
| */ |
| public interface PDFEncryption { |
| |
| /** |
| * Adds a PDFFilter to the PDFStream object |
| * @param stream the stream to add an encryption filter to |
| */ |
| void applyFilter(AbstractPDFStream stream); |
| |
| /** |
| * Encrypt an array of bytes using a reference PDFObject for calculating |
| * the encryption key. |
| * @param data data to encrypt |
| * @param refObj reference PDFObject |
| * @return byte[] the encrypted data |
| */ |
| byte[] encrypt(byte[] data, PDFObject refObj); |
| |
| /** |
| * Returns the /Encrypt entry in the file trailer dictionary. |
| * |
| * @return the string "/Encrypt n g R\n" where n and g are the number and generation |
| * of the document's encryption dictionary |
| */ |
| String getTrailerEntry(); |
| } |