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org.jets3t.apps.utils.FileCryptoTool Maven / Gradle / Ivy
Toolkit for Amazon S3, Amazon CloudFront, and Google Storage Service.
package org.jets3t.apps.utils;
/*
* JetS3t : Java S3 Toolkit
* Project hosted at http://bitbucket.org/jmurty/jets3t/
*
* Copyright 2008 James Murty
*
* 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.
*/
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.Insets;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.security.InvalidAlgorithmParameterException;
import java.security.InvalidKeyException;
import java.security.NoSuchAlgorithmException;
import java.security.Provider;
import java.security.Security;
import java.security.spec.AlgorithmParameterSpec;
import java.security.spec.InvalidKeySpecException;
import java.util.HashSet;
import java.util.Iterator;
import java.util.Set;
import javax.crypto.Cipher;
import javax.crypto.CipherInputStream;
import javax.crypto.NoSuchPaddingException;
import javax.crypto.SecretKey;
import javax.crypto.SecretKeyFactory;
import javax.crypto.spec.PBEKeySpec;
import javax.crypto.spec.PBEParameterSpec;
import javax.swing.JButton;
import javax.swing.JComboBox;
import javax.swing.JFileChooser;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JPasswordField;
import javax.swing.JTextField;
/**
* A rudimentary GUI and utility for encrypting and decrypting files in a way
* that is compatible with JetS3t's cryptographic features.
*
* @author James Murty
*/
public class FileCryptoTool {
private String algorithm = "PBEWithMD5AndDES";
private SecretKey key = null;
private AlgorithmParameterSpec algParamSpec = null;
private int iterationCount = 5000;
private byte[] salt = {
(byte)0xA4, (byte)0x0B, (byte)0xC8, (byte)0x34,
(byte)0xD6, (byte)0x95, (byte)0xF3, (byte)0x13
};
static {
try {
Class bouncyCastleProviderClass =
Class.forName("org.bouncycastle.jce.provider.BouncyCastleProvider");
if (bouncyCastleProviderClass != null) {
Provider bouncyCastleProvider = (Provider) bouncyCastleProviderClass
.getConstructor(new Class[] {}).newInstance(new Object[] {});
Security.addProvider(bouncyCastleProvider);
}
} catch (RuntimeException e) {
throw e;
} catch (Exception e) {
System.err.println("Unable to load security provider BouncyCastleProvider");
}
}
public FileCryptoTool() {
}
public void init(String password, String algorithm, byte[] salt, int interationCount)
throws NoSuchAlgorithmException, InvalidKeySpecException
{
this.algorithm = algorithm;
this.salt = salt;
this.iterationCount = interationCount;
PBEKeySpec keyspec = new PBEKeySpec(password.toCharArray(), this.salt, this.iterationCount, 32);
SecretKeyFactory skf = SecretKeyFactory.getInstance(algorithm);
this.key = skf.generateSecret(keyspec);
this.algParamSpec = new PBEParameterSpec(this.salt, this.iterationCount);
}
public void init(String password, String algorithm)
throws NoSuchAlgorithmException, InvalidKeySpecException
{
init(password, algorithm, this.salt, this.iterationCount);
}
public void decryptFile(File inputFile, File outputFile) throws NoSuchAlgorithmException,
NoSuchPaddingException, InvalidKeyException, InvalidAlgorithmParameterException,
IOException
{
Cipher cipher = Cipher.getInstance(this.algorithm);
cipher.init(Cipher.DECRYPT_MODE, this.key, this.algParamSpec);
transferFileData(inputFile, outputFile, cipher);
}
public void encryptFile(File inputFile, File outputFile) throws NoSuchAlgorithmException,
NoSuchPaddingException, InvalidKeyException, InvalidAlgorithmParameterException,
IOException
{
Cipher cipher = Cipher.getInstance(this.algorithm);
cipher.init(Cipher.ENCRYPT_MODE, this.key, this.algParamSpec);
transferFileData(inputFile, outputFile, cipher);
}
protected void transferFileData(File inputFile, File outputFile, Cipher cipher) throws IOException {
InputStream is = null;
OutputStream os = null;
try {
os = new BufferedOutputStream(new FileOutputStream(outputFile));
is = new CipherInputStream(new BufferedInputStream(new FileInputStream(inputFile)), cipher);
byte[] buffer = new byte[16384];
int read = -1;
while ((read = is.read(buffer)) != -1) {
os.write(buffer, 0, read);
}
} finally {
if (os != null)
os.close();
if (is != null)
is.close();
}
}
protected void initGui(final JFrame frame) {
final FileCryptoTool self = this;
final File[] filesArray = new File[2];
JLabel inputFileLabel = new JLabel("Input file:");
final JTextField inputFileTextField = new JTextField();
JButton inputFileBrowseButton = new JButton("Browse");
inputFileBrowseButton.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
filesArray[0] = fileChooser("Input File", frame, false);
if (filesArray[0] != null) {
inputFileTextField.setText(filesArray[0].getAbsolutePath());
} else {
inputFileTextField.setText("");
}
}
});
JLabel outputDirectoryLabel = new JLabel("Output directory:");
final JTextField outputDirectoryTextField = new JTextField();
JButton outputDirectoryBrowseButton = new JButton("Browse");
outputDirectoryBrowseButton.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
filesArray[1] = fileChooser("Output Directory", frame, true);
if (filesArray[1] != null) {
outputDirectoryTextField.setText(filesArray[1].getAbsolutePath());
} else {
outputDirectoryTextField.setText("");
}
}
});
JLabel passwordLabel = new JLabel("Password:");
final JPasswordField passwordField = new JPasswordField();
JLabel passwordConfirmLabel = new JLabel("Password (confirm):");
final JPasswordField password2Field = new JPasswordField();
JLabel algorithmLabel = new JLabel("Algorithm:");
final JComboBox algorithmComboBox = new JComboBox(listAvailablePbeCiphers());
algorithmComboBox.setSelectedItem(this.algorithm.toUpperCase());
algorithmComboBox.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent arg0) {
self.algorithm = (String) algorithmComboBox.getSelectedItem();
}
});
final JButton encryptButton = new JButton("Encrypt File");
final JButton decryptButton = new JButton("Decrypt File");
ActionListener buttonListener = new ActionListener() {
public void actionPerformed(ActionEvent event) {
try {
if (inputFileTextField.getText().trim().length() == 0) {
JOptionPane.showMessageDialog(frame, "Choose an input file");
}
else if (outputDirectoryTextField.getText().trim().length() == 0) {
JOptionPane.showMessageDialog(frame, "Choose an output directory");
}
else if (passwordField.getPassword().length == 0
|| password2Field.getPassword().length == 0)
{
JOptionPane.showMessageDialog(frame, "Enter your password twice");
}
else if (!new String(passwordField.getPassword()).equals(new String(password2Field.getPassword())))
{
JOptionPane.showMessageDialog(frame, "Password and confirmation password do not match");
}
else {
File inputFile = new File(inputFileTextField.getText().trim());
File outputDirectory = new File(outputDirectoryTextField.getText().trim());
File outputFile = new File(outputDirectory, inputFile.getName());
if (!outputDirectory.isDirectory()) {
JOptionPane.showMessageDialog(frame, "The output directory is not valid");
}
else if (inputFile.equals(outputFile)) {
JOptionPane.showMessageDialog(frame,
"Choose a different output directory from the one that contains the input file");
}
else {
boolean encrypting = event.getSource().equals(encryptButton);
init(new String(passwordField.getPassword()), self.algorithm);
if (encrypting) {
encryptFile(inputFile, outputFile);
} else {
decryptFile(inputFile, outputFile);
}
JOptionPane.showMessageDialog(frame,
"'" + inputFile.getName() + "' "
+ (encrypting ? "encrypted" : "decrypted")
+ " to: \n'" + outputFile.getAbsolutePath() + "'");
}
}
} catch (RuntimeException e) {
throw e;
} catch (Exception e) {
JOptionPane.showMessageDialog(frame, "ERROR: " + e.getMessage());
}
}
};
encryptButton.addActionListener(buttonListener);
decryptButton.addActionListener(buttonListener);
Insets insetsDefault = new Insets(2, 3, 2, 3);
JPanel inputsPanel = new JPanel(new GridBagLayout());
inputsPanel.add(inputFileLabel, new GridBagConstraints(0, 0,
1, 1, 0, 1, GridBagConstraints.EAST, GridBagConstraints.NONE, insetsDefault, 0, 0));
inputsPanel.add(inputFileTextField, new GridBagConstraints(1, 0,
1, 1, 1, 1, GridBagConstraints.CENTER, GridBagConstraints.HORIZONTAL, insetsDefault, 0, 0));
inputsPanel.add(inputFileBrowseButton, new GridBagConstraints(2, 0,
1, 1, 0, 1, GridBagConstraints.CENTER, GridBagConstraints.NONE, insetsDefault, 0, 0));
inputsPanel.add(outputDirectoryLabel, new GridBagConstraints(0, 1,
1, 1, 0, 1, GridBagConstraints.EAST, GridBagConstraints.NONE, insetsDefault, 0, 0));
inputsPanel.add(outputDirectoryTextField, new GridBagConstraints(1, 1,
1, 1, 1, 1, GridBagConstraints.CENTER, GridBagConstraints.HORIZONTAL, insetsDefault, 0, 0));
inputsPanel.add(outputDirectoryBrowseButton, new GridBagConstraints(2, 1,
1, 1, 0, 1, GridBagConstraints.CENTER, GridBagConstraints.NONE, insetsDefault, 0, 0));
inputsPanel.add(passwordLabel, new GridBagConstraints(0, 2,
1, 1, 0, 1, GridBagConstraints.EAST, GridBagConstraints.NONE, insetsDefault, 0, 0));
inputsPanel.add(passwordField, new GridBagConstraints(1, 2,
1, 1, 1, 1, GridBagConstraints.CENTER, GridBagConstraints.HORIZONTAL, insetsDefault, 0, 0));
inputsPanel.add(passwordConfirmLabel, new GridBagConstraints(0, 3,
1, 1, 0, 1, GridBagConstraints.EAST, GridBagConstraints.NONE, insetsDefault, 0, 0));
inputsPanel.add(password2Field, new GridBagConstraints(1, 3,
1, 1, 1, 1, GridBagConstraints.CENTER, GridBagConstraints.HORIZONTAL, insetsDefault, 0, 0));
inputsPanel.add(algorithmLabel, new GridBagConstraints(0, 4,
1, 1, 0, 1, GridBagConstraints.EAST, GridBagConstraints.NONE, insetsDefault, 0, 0));
inputsPanel.add(algorithmComboBox, new GridBagConstraints(1, 4,
1, 1, 1, 1, GridBagConstraints.CENTER, GridBagConstraints.HORIZONTAL, insetsDefault, 0, 0));
JPanel buttonsPanel = new JPanel(new GridBagLayout());
buttonsPanel.add(encryptButton, new GridBagConstraints(0, 0,
1, 1, 1, 0, GridBagConstraints.WEST, GridBagConstraints.NONE, insetsDefault, 0, 0));
buttonsPanel.add(decryptButton, new GridBagConstraints(1, 0,
1, 1, 1, 0, GridBagConstraints.EAST, GridBagConstraints.NONE, insetsDefault, 0, 0));
frame.getContentPane().setLayout(new GridBagLayout());
frame.getContentPane().add(inputsPanel, new GridBagConstraints(0, 0,
1, 1, 1, 1, GridBagConstraints.CENTER, GridBagConstraints.BOTH, insetsDefault, 0, 0));
frame.getContentPane().add(buttonsPanel, new GridBagConstraints(0, 1,
1, 1, 1, 0, GridBagConstraints.CENTER, GridBagConstraints.NONE, insetsDefault, 0, 0));
frame.pack();
frame.setVisible(true);
}
private File fileChooser(String title, JFrame frame, boolean dirOnly) {
// Prompt user to choose their Cockpit home directory.
JFileChooser fileChooser = new JFileChooser();
fileChooser.setAcceptAllFileFilterUsed(true);
fileChooser.setDialogTitle(title);
fileChooser.setFileSelectionMode(
(dirOnly ? JFileChooser.DIRECTORIES_ONLY : JFileChooser.FILES_ONLY));
fileChooser.setApproveButtonText("Select " +
(dirOnly ? "Directory" : "File"));
int returnVal = fileChooser.showOpenDialog(frame);
if (returnVal != JFileChooser.APPROVE_OPTION) {
return null;
} else {
return fileChooser.getSelectedFile();
}
}
private static String[] listAvailablePbeCiphers() {
Set ciphers = Security.getAlgorithms("Cipher");
Set pbeCiphers = new HashSet();
for (Iterator iter = ciphers.iterator(); iter.hasNext(); ) {
String cipher = (String) iter.next();
if (cipher.toLowerCase().startsWith("pbe")) {
pbeCiphers.add(cipher);
}
}
return (String[]) pbeCiphers.toArray(new String[pbeCiphers.size()]);
}
public static void main(String[] args) throws Exception {
FileCryptoTool fct = new FileCryptoTool();
JFrame frame = new JFrame("File Crypto Tool");
fct.initGui(frame);
}
}
