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1
50 package com.lowagie.tools;
51
52 import java.io.FileOutputStream  ;
53 import java.util.HashMap ;
54
55 import com.lowagie.text.pdf.PdfEncryptor;
56 import com.lowagie.text.pdf.PdfReader;
57 import com.lowagie.text.pdf.PdfWriter;
58
59
63 public class encrypt_pdf {
64
65 private final static int INPUT_FILE = 0;
66 private final static int OUTPUT_FILE = 1;
67 private final static int USER_PASSWORD = 2;
68 private final static int OWNER_PASSWORD = 3;
69 private final static int PERMISSIONS = 4;
70 private final static int STRENGTH = 5;
71 private final static int MOREINFO = 6;
72 private final static int permit[] = {
73 PdfWriter.AllowPrinting,
74 PdfWriter.AllowModifyContents,
75 PdfWriter.AllowCopy,
76 PdfWriter.AllowModifyAnnotations,
77 PdfWriter.AllowFillIn,
78 PdfWriter.AllowScreenReaders,
79 PdfWriter.AllowAssembly,
80 PdfWriter.AllowDegradedPrinting};
81
82 private static void usage() {
83 System.out.println("usage: input_file output_file user_password owner_password permissions 128|40 [new info string pairs]");
84 System.out.println("permissions is 8 digit long 0 or 1. Each digit has a particular security function:");
85 System.out.println();
86 System.out.println("AllowPrinting");
87 System.out.println("AllowModifyContents");
88 System.out.println("AllowCopy");
89 System.out.println("AllowModifyAnnotations");
90 System.out.println("AllowFillIn (128 bit only)");
91 System.out.println("AllowScreenReaders (128 bit only)");
92 System.out.println("AllowAssembly (128 bit only)");
93 System.out.println("AllowDegradedPrinting (128 bit only)");
94 System.out.println("Example permissions to copy and print would be: 10100000");
95 }
96
97
102 public static void main (String args[]) {
103 System.out.println("PDF document encryptor");
104 if (args.length <= STRENGTH || args[PERMISSIONS].length() != 8) {
105 usage();
106 return;
107 }
108 try {
109 int permissions = 0;
110 String p = args[PERMISSIONS];
111 for (int k = 0; k < p.length(); ++k) {
112 permissions |= (p.charAt(k) == '0' ? 0 : permit[k]);
113 }
114 System.out.println("Reading " + args[INPUT_FILE]);
115 PdfReader reader = new PdfReader(args[INPUT_FILE]);
116 System.out.println("Writing " + args[OUTPUT_FILE]);
117 HashMap moreInfo = new HashMap ();
118 for (int k = MOREINFO; k < args.length - 1; k += 2)
119 moreInfo.put(args[k], args[k + 1]);
120 PdfEncryptor.encrypt(reader, new FileOutputStream (args[OUTPUT_FILE]),
121 args[USER_PASSWORD].getBytes(), args[OWNER_PASSWORD].getBytes(), permissions, args[STRENGTH].equals("128"), moreInfo);
122 System.out.println("Done.");
123 }
124 catch (Exception e) {
125 e.printStackTrace();
126 }
127 }
128 } |
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