if (args.length != 2) {
System.err.println("Usage: java FileEncryptor filename password");
return;
}
String filename = args[0];
String password = args[1];
if (password.length() < 8 ) {
System.err.println("Password must be at least eight characters long");
}
try {
FileInputStream fin = new FileInputStream(args[0]);
FileOutputStream fout = new FileOutputStream(args[0] + ".pbe");
// create a key
PBEKeySpec pbeKeySpec = new PBEKeySpec(password.toCharArray());
SecretKeyFactory keyFactory = SecretKeyFactory.getInstance("PBEWithMD5AndDES");
SecretKey pbeKey = keyFactory.generateSecret(pbeKeySpec);
// use Password Based Encryption
byte[] salt = { (byte) 0x9C, (byte) 0x8A, (byte) 0xFF, (byte) 0xEF,
(byte) 0x76, (byte) 0x23, (byte) 0x29, (byte) 0x02, };
PBEParameterSpec paramspec = new PBEParameterSpec(salt, 20);
Cipher pbe = Cipher.getInstance("PBEWithMD5AndDES");
pbe.init(Cipher.ENCRYPT_MODE, pbeKey, paramspec);
byte[] input = new byte[64];
while (true) {
int bytesRead = fin.read(input);
if (bytesRead == -1) break;
byte[] output = pbe.update(input, 0, bytesRead);
if (output != null) fout.write(output);
}
byte[] output = pbe.doFinal();
if (output != null) fout.write(output);
fin.close();
fout.flush();
fout.close();
}
catch (InvalidKeySpecException e) {
System.err.println(e);
}
catch (InvalidKeyException e) {
System.err.println(e);
}
catch (InvalidAlgorithmParameterException e) {
System.err.println(e);
}
catch (NoSuchAlgorithmException e) {
System.err.println(e);
e.printStackTrace();
}
catch (NoSuchPaddingException e) {
System.err.println(e);
}
catch (BadPaddingException e) {
System.err.println(e);
}
catch (IllegalBlockSizeException e) {
System.err.println(e);
}
catch (IOException e) {
System.err.println(e);
}
