What Is fop.jar? I got it from the fop-2.7-bin.zip.

fop.jar in fop-2.7-bin.zip is the JAR file for FOP 2.7, which is a print formatter driven by XSL formatting objects (XSL-FO). You can obtain fop.jar from the build folder of the fop-2.7-bin.zip file.

Below is the information about the fop.jar (2.2) file:

JAR File Size and Download Location:

JAR name: fop.jar, fop-2.7.jar
Target JDK version: 1.7
File name: fop.jar
File size: 4442817 bytes
Release date: 20-Jan-2022
Download: Apache FOP Website

Java source code files for fop.jar:

⏎ org/apache/fop/pdf/PDFEncryptionManager.java

/*
 * 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: PDFEncryptionManager.java 1661887 2015-02-24 11:23:44Z ssteiner $ */

package org.apache.fop.pdf;

import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.security.Provider;
import java.security.Security;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

/**
 * This class acts as a factory for PDF encryption support. It enables the
 * feature to be optional to FOP depending on the availability of JCE.
 */
public final class PDFEncryptionManager {

    private PDFEncryptionManager() {
    }

    /** logging instance */
    private static final Log LOG = LogFactory.getLog(PDFEncryptionManager.class);

    /**
     * Indicates whether JCE is available.
     * @return boolean true if JCE is present
     */
    public static boolean isJCEAvailable() {
        try {
            /*Class clazz =*/ Class.forName("javax.crypto.Cipher");
            return true;
        } catch (ClassNotFoundException e) {
            return false;
        }
    }

    /**
     * Checks whether the necessary algorithms are available.
     * @return boolean True if all necessary algorithms are present
     */
    public static boolean checkAvailableAlgorithms() {
        if (!isJCEAvailable()) {
            return false;
        } else {
            Provider[] providers;
            providers = Security.getProviders("Cipher.RC4");
            if (providers == null) {
                LOG.warn("Cipher provider for RC4 not available.");
                return false;
            }
            providers = Security.getProviders("MessageDigest.MD5");
            if (providers == null) {
                LOG.warn("MessageDigest provider for MD5 not available.");
                return false;
            }
            return true;
        }
    }


    /**
     * Sets up PDF encryption if PDF encryption is requested by registering
     * a <code>PDFEncryptionParams</code> object with the user agent and if
     * the necessary cryptographic support is available.
     * @param params the PDF encryption params or null to disable encryption
     * @param pdf the PDF document to setup encryption for
     */
    public static void setupPDFEncryption(PDFEncryptionParams params,
                                          PDFDocument pdf) {
        if (pdf == null) {
            throw new NullPointerException("PDF document must not be null");
        }
        if (params != null) {
            if (!checkAvailableAlgorithms()) {
                if (isJCEAvailable()) {
                    LOG.warn("PDF encryption has been requested, JCE is "
                            + "available but there's no "
                            + "JCE provider available that provides the "
                            + "necessary algorithms. The PDF won't be "
                            + "encrypted.");
                } else {
                    LOG.warn("PDF encryption has been requested but JCE is "
                            + "unavailable! The PDF won't be encrypted.");
                }
            }
            pdf.setEncryption(params);
        }
    }

    /**
     * Creates a new PDFEncryption instance if PDF encryption is available.
     * @param params PDF encryption parameters
     * @param pdf the PDF document to encrypt
     * @return PDFEncryption the newly created instance, null if PDF encryption
     * is unavailable.
     */
    public static PDFEncryption newInstance(PDFEncryptionParams params,
            PDFDocument pdf) {
        try {
            PDFObjectNumber pdfObjectNumber = new PDFObjectNumber();
            pdfObjectNumber.setDocument(pdf);
            Class<?> clazz = Class.forName("org.apache.fop.pdf.PDFEncryptionJCE");
            Method makeMethod = clazz.getMethod("make",
                        new Class[] {PDFObjectNumber.class, PDFEncryptionParams.class, PDFDocument.class});
            Object obj = makeMethod.invoke(null,
                        new Object[] {pdfObjectNumber, params, pdf});
            return (PDFEncryption)obj;
        } catch (ClassNotFoundException e) {
            if (checkAvailableAlgorithms()) {
                LOG.warn("JCE and algorithms available, but the "
                    + "implementation class unavailable. Please do a full "
                    + "rebuild.");
            }
            return null;
        } catch (NoSuchMethodException e) {
            LOG.error(e);
            return null;
        } catch (IllegalAccessException e) {
            LOG.error(e);
            return null;
        } catch (InvocationTargetException e) {
            LOG.error(e);
            return null;
        }
    }

}

⏎ org/apache/fop/pdf/PDFEncryptionManager.java

Or download all of them as a single archive file:

File name: fop-2.7-src.zip
File size: 3401312 bytes
Release date: 2022-01-20
Download 

⇒ "fop" Command in fop-2.7-bin.zip

⇐ What Is fop-2.7-bin.zip

⇑ Download and Installing of FOP 2.x

⇑⇑ FAQ for FOP (Formatting Object Processor)