Encryption/Decryption using java or oracle

[chandubcs]

Hi all,
I need to store the user passwords in Oracle using Java, so I am looking for some simple algorithms or methods (which are not too complex) to encrypt and decrypt using either java or oracle which are freeware.
Thanks,

[Danny Kaplun]

hi i have such a program, but i do not have it on my laptop. it is in java. you can encrypt and decrypt programs with a password(pbe encryption). just telling, when i get home, i will put it on.

[Danny Kaplun]

sorry for the delayed response; i forgot. here is the code.

import java.io.*;
import javax.crypto.*;
import javax.crypto.spec.*;
import java.util.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.JPasswordField;
public class EncryptDecrypt extends WindowAdapter implements ActionListener
{
public static JPasswordField PasswordField;
public static Button EncryptButton, DecryptButton;
public static Cipher PBECipher;
public static SecretKey PBEKey;
public static PBEKeySpec PBEKeySpecification;
public static PBEParameterSpec PBEParamSpec;
public static final byte[] Salt = {(byte)0xc7, (byte)0x73, (byte)0x21, (byte)0x8c, (byte)0x7e, (byte)0xc8, (byte)0xee, (byte)0x99};
public static final int Count = 20;
public static void main(String[] args)
{
try
{
Frame frame = new Frame("EncryptDecrypt");
frame.addWindowListener(new EncryptDecrypt());
EncryptButton = new Button("Encrypt");
DecryptButton = new Button("Decrypt");
PasswordField = new JPasswordField();
EncryptButton.addActionListener(new EncryptDecrypt());
DecryptButton.addActionListener(new EncryptDecrypt());
PasswordField.setBounds(2, 28, 252, 20);
EncryptButton.setBounds(2, 48, 126, 20);
DecryptButton.setBounds(128, 48, 126, 20);
frame.setSize(256, 70);
frame.add(PasswordField);
frame.add(EncryptButton);
frame.add(DecryptButton);
frame.setResizable(false);
frame.setLayout(new BorderLayout());
frame.show();
}
catch(Exception e) {}
}
public static void InitiateCipher(int mode)
{
try
{
PBEParamSpec = new PBEParameterSpec(Salt, Count);
PBEKeySpecification = new PBEKeySpec(PasswordField.getPassword());
PasswordField.setText("");
SecretKeyFactory keyFac = SecretKeyFactory.getInstance("PBEWithMD5AndDES");
PBEKey = keyFac.generateSecret(PBEKeySpecification);
PBECipher = Cipher.getInstance("PBEWithMD5AndDES");
EncryptDecrypt.PBECipher.init(mode, EncryptDecrypt.PBEKey, EncryptDecrypt.PBEParamSpec);
}
catch(Exception e) {}
}
public void Encrypt()
{
try
{
InitiateCipher(Cipher.ENCRYPT_MODE);
Frame FileFrame = new Frame();
FileDialog LoadDialog = new FileDialog(FileFrame, "Load", FileDialog.LOAD);
LoadDialog.show();
InputStream In = new BufferedInputStream(new FileInputStream(new File(LoadDialog.getDirectory() + LoadDialog.getFile())));
FileDialog SaveDialog = new FileDialog(FileFrame, "Save", FileDialog.SAVE);
SaveDialog.setFile("Encrypted.txt");
SaveDialog.show();
CipherOutputStream Out = new CipherOutputStream(new FileOutputStream(new File(SaveDialog.getDirectory() + SaveDialog.getFile())), EncryptDecrypt.PBECipher);
int i;
while ((i = In.read()) != -1)
Out.write(i);
Out.flush();
Out.close();
In.close();
}
catch(Exception e) {}
}
public void Decrypt()
{
try
{
InitiateCipher(Cipher.DECRYPT_MODE);
Frame FileFrame = new Frame();
FileDialog LoadDialog = new FileDialog(FileFrame, "Load", FileDialog.LOAD);
LoadDialog.show();
CipherInputStream In = new CipherInputStream(new FileInputStream(new File(LoadDialog.getDirectory() + LoadDialog.getFile())), EncryptDecrypt.PBECipher);
FileDialog SaveDialog = new FileDialog(FileFrame, "Save", FileDialog.SAVE);
SaveDialog.setFile("Decrypted.txt");
SaveDialog.show();
OutputStream Out = new BufferedOutputStream(new FileOutputStream(new File(SaveDialog.getDirectory() + SaveDialog.getFile())));
int i;
while ((i = In.read()) != -1)
Out.write(i);
Out.flush();
Out.close();
In.close();
}
catch(Exception e) {}
}
public void actionPerformed(ActionEvent e)
{
try
{
if(e.getSource() == EncryptButton)
Encrypt();
if(e.getSource() == DecryptButton)
Decrypt();
}
catch(Exception ex) {}
}
public void windowClosing(WindowEvent e)
{
try
{
System.exit(0);
}
catch(Exception ex) {}
}
}