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- /*
- * Copyright 1999-2004 The Apache Software Foundation.
- *
- * 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.
- */
-
- /* $Id$ */
-
- package org.apache.fop.pdf;
-
- /**
- * This interface defines the contract for classes implementing PDF encryption.
- */
- public interface PDFEncryption {
-
- /**
- * Returns the encryption parameters.
- * @return the encryption parameters
- */
- PDFEncryptionParams getParams();
-
- /**
- * Sets the encryption parameters.
- * @param params The parameterss to set
- */
- void setParams(PDFEncryptionParams params);
-
- /**
- * 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 trailer entry for encryption.
- * @return the trailer entry
- */
- String getTrailerEntry();
- }
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