I'm using NetBeans, and I'm having a problem with the following code: A lot of mistakes sorry!! i'm new here and i update the code with last edit but still i gets the same error
package org.owasp.crypto;
import java.io.InputStream;
import javax.crypto.KeyGenerator;
import javax.crypto.SecretKey;
import javax.crypto.Cipher;
import java.security.NoSuchAlgorithmException;
import java.security.InvalidKeyException;
import java.security.InvalidAlgorithmParameterException;
import javax.crypto.NoSuchPaddingException;
import javax.crypto.BadPaddingException;
import javax.crypto.IllegalBlockSizeException;
import sun.misc.BASE64Encoder;
/**
* @author Joe Prasanna Kumar
* This program provides the following cryptographic functionalities
* 1. Encryption using DES
* 2. Decryption using DES
*
* The following modes of DES encryption are supported by SUNJce provider
* 1. ECB (Electronic code Book) - Every plaintext block is encrypted separately
* 2. CBC (Cipher Block Chaining) - Every plaintext block is XORed with the previous ciphertext block
* 3. PCBC (Propogating Cipher Block Chaining) -
* 4. CFB (Cipher Feedback Mode) - The previous ciphertext block is encrypted and this enciphered block is XORed with the plaintext block to produce the corresponding ciphertext block
* 5. OFB (Output Feedback Mode) -
*
* High Level Algorithm :
* 1. Generate a DES key
* 2. Create the Cipher (Specify the Mode and Padding)
* 3. To Encrypt : Initialize the Cipher for Encryption
* 4. To Decrypt : Initialize the Cipher for Decryption
*
* Need for Padding :
* Block ciphers operates on data blocks on fixed size n.
* Since the data to be encrypted might not always be a multiple of n, the remainder of the bits are padded.
* PKCS#5 Padding is what will be used in this program
*
*/
public class DES {
public static void main(String[] args) {
DES strDataToEncrypt = new DES(System.in);
DES strCipherText = new DES(System.in);
DES strDecryptedText = new DES(System.in);
try{
/**
* Step 1. Generate a DES key using KeyGenerator
*
*/
KeyGenerator keyGen = KeyGenerator.getInstance("DES");
SecretKey secretKey = keyGen.generateKey();
/**
* Step2. Create a Cipher by specifying the following parameters
* a. Algorithm name - here it is DES
* b. Mode - here it is CBC
* c. Padding - PKCS5Padding
*/
Cipher desCipher = Cipher.getInstance("DES/CBC/PKCS5Padding");
/**
* Step 3. Initialize the Cipher for Encryption
*/
desCipher.init(Cipher.ENCRYPT_MODE,secretKey);
/**
* Step 4. Encrypt the Data
* 1. Declare / Initialize the Data. Here the data is of type String
* 2. Convert the Input Text to Bytes
* 3. Encrypt the bytes using doFinal method
*/
System.out.print( "Type some data for the program: " );
String input = strDataToEncrypt.nextLine();
//strDataToEncrypt = "Hello World of Encryption using DES ";
byte[] byteDataToEncrypt = strDataToEncrypt.getBytes();
byte[] byteCipherText = desCipher.doFinal(byteDataToEncrypt);
strCipherText = new BASE64Encoder().encode(byteCipherText);
System.out.println("Cipher Text generated using DES with CBC mode and PKCS5 Padding is " +strCipherText);
/**
* Step 5. Decrypt the Data
* 1. Initialize the Cipher for Decryption
* 2. Decrypt the cipher bytes using doFinal method
*/
desCipher.init(Cipher.DECRYPT_MODE,secretKey,desCipher.getParameters());
//desCipher.init(Cipher.DECRYPT_MODE,secretKey);
byte[] byteDecryptedText = desCipher.doFinal(byteCipherText);
strDecryptedText = new String(byteDecryptedText);
System.out.println(" Decrypted Text message is " +strDecryptedText);
}
catch (NoSuchAlgorithmException noSuchAlgo)
{
System.out.println(" No Such Algorithm exists " + noSuchAlgo);
}
catch (NoSuchPaddingException noSuchPad)
{
System.out.println(" No Such Padding exists " + noSuchPad);
}
catch (InvalidKeyException invalidKey)
{
System.out.println(" Invalid Key " + invalidKey);
}
catch (BadPaddingException badPadding)
{
System.out.println(" Bad Padding " + badPadding);
}
catch (IllegalBlockSizeException illegalBlockSize)
{
System.out.println(" Illegal Block Size " + illegalBlockSize);
}
catch (InvalidAlgorithmParameterException invalidParam)
{
System.out.println(" Invalid Parameter " + invalidParam);
}
}
private DES(InputStream in) {
throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates.
}
private String nextLine() {
throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates.
}
private byte[] getBytes() {
throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates.
}
}
And the new error is:
run:
Exception in thread "main" java.lang.UnsupportedOperationException: Not supported yet.
at org.owasp.crypto.DES.<init>(DES.java:132)
at org.owasp.crypto.DES.main(DES.java:46)
Java Result: 1
BUILD SUCCESSFUL (total time: 0 seconds)
What's might be the problem?
update#1
