基于java的很强的加密解密算法源码.zip

package net.sourceforge.jfilecrypt; //Download to http://www.codefans.net //~--- JDK imports ------------------------------------------------------------ import java.awt.*; import java.awt.event.*; import java.io.*; import java.security.*; import java.util.Enumeration; import java.util.Properties; import java.util.Vector; import java.util.zip.*; import javax.crypto.*; import javax.crypto.spec.*; import javax.swing.*; import javax.swing.event.*; //~--- classes ---------------------------------------------------------------- public class jFileCryptFrame extends JFrame { private static final long serialVersionUID = 1L; private JButton btChoose = new JButton(); private JProgressBar pbCryptProgress = new JProgressBar(); private JPasswordField pfPassword = new JPasswordField(); private JLabel lbAlgorithm = new JLabel(); private JLabel lbSource = new JLabel(); private JTextField tfSourceFile = new JTextField(); private JLabel lbPassword = new JLabel(); private JComboBox cmbAlgorithm = new JComboBox(); private JComboBox cmbCompressionLevel = new JComboBox(); private JButton btDecrypt = new JButton(); private JButton btEncrypt = new JButton(); private JFileChooser fchooser = new JFileChooser(); private JCheckBox chbUseCompression = new JCheckBox(); private Properties prop = new Properties(); private long read = 0; private int start_for_entry_path = 0; private String dir_for_encrypted =""; private long size_all_files = 0; //~--- constructors ------------------------------------------------------- /** * This is the main-constructor. It calls the @see jbinit() method. */ public jFileCryptFrame() { super(); try { jbInit(); } catch (Exception e) { e.printStackTrace(); } } //~--- methods ------------------------------------------------------------ private void decrypt(final File f) { if(f.isDirectory()) { File[] files = f.listFiles(); for(int i = 0; i<files.length; i++) { decrypt(files[i]); } } else { new Thread() { public void run() { try { String kind = (String) cmbAlgorithm.getSelectedItem(); // Which algorithm? int index = kind.indexOf("("); kind = kind.substring(0, index); Cipher c = Cipher.getInstance(kind); Key k = new SecretKeySpec( new String(pfPassword.getPassword()).getBytes(), kind); c.init(Cipher.DECRYPT_MODE, k); String filename = f.getCanonicalPath(); if(filename.endsWith(prop.getProperty(kind))) { filename = filename.substring( 0, filename.length() - prop.getProperty(kind).length()); // -suffix } else { displayError("Error: Wrong file chosen", "Ending of file and chosen algorithm do not match! Filename must end with: " + prop.getProperty(kind)); return; } FileInputStream fis = new FileInputStream(f.getCanonicalPath()); FileOutputStream fos = new FileOutputStream(filename); CipherInputStream cis = new CipherInputStream(fis, c); byte[] buffer = new byte[0xFFFF]; final long size = f.length(); pbCryptProgress.setMaximum((int) size); for (int len; (len = cis.read(buffer)) != -1;) { fos.write(buffer, 0, len); read += len; SwingUtilities.invokeLater(new Runnable() { public void run() { pbCryptProgress.setValue((int)read); pbCryptProgress.repaint(); } }); // Set Progress } cis.close(); fos.flush(); fos.close(); fis.close(); pbCryptProgress.setMaximum(100); pbCryptProgress.setValue(0); read = 0; } catch (Exception x) { x.printStackTrace(); } } }.start(); } } private void encrypt(final File f) { if(f.isDirectory()) { File[] files = f.listFiles(); for(int i = 0; i<files.length; i++) { encrypt(files[i]); } } else { new Thread() { public void run() { try { String kind = (String) cmbAlgorithm.getSelectedItem(); // Which algorithm? int index = kind.indexOf("("); kind = kind.substring(0, index); Cipher c = Cipher.getInstance(kind); Key k = new SecretKeySpec( new String(pfPassword.getPassword()).getBytes(), kind); c.init(Cipher.ENCRYPT_MODE, k); FileInputStream fis = new FileInputStream(f.getCanonicalPath()); FileOutputStream fos = new FileOutputStream(f.getCanonicalPath() + prop.getProperty(kind)); CipherOutputStream cos = new CipherOutputStream(fos, c); final int size = (int) f.length(); byte[] buffer = new byte[0xFFFF]; pbCryptProgress.setMaximum(size); for (int len; (len = fis.read(buffer)) != -1; ) { cos.write(buffer, 0, len); read += len; SwingUtilities.invokeLater(new Runnable() { public void run() { pbCryptProgress.setValue((int)read); pbCryptProgress.repaint(); } }); // Set Progress } cos.flush(); cos.close(); fos.flush(); fos.close(); fis.close(); pbCryptProgress.setMaximum(100); pbCryptProgress.setValue(0); read = 0; } catch (Exception x) { x.printStackTrace(); } } }.start(); } } /** * This method shows a @see javax.swing.JFileChooser and calls then * the method @see setFileChosen(boolean b). * @param e */ private void btChoose_actionPerformed(ActionEvent e) { try { if (fchooser.showOpenDialog(null) == JFileChooser.APPROVE_OPTION) { String path = fchooser.getSelectedFile().getCanonicalPath(); tfSourceFile.setText(path); } } catch (IOException ioex) { } } /** * This method is called by a click of btEncrypt. It calls * the @see zip_encrypt(final file f, ZipOutputstream zos) or @see encrypt(final File f). * @param e */ private void btEncrypt_actionPerformed(ActionEvent e) { String path = tfSourceFile.getText(); if(! path.equals("")) { // File chosen? File file = new File(path); if(file.exists()) { // Does file exist? if(chbUseCompression.isSelected()) { String root_dire