每次獲得與DES加密相同的錯誤java代碼

Question

我正在使用NetBeans，並且遇到以下代碼的問題： 很多錯誤對不起！我是新來的，我更新與上次編輯的代碼，但我仍然得到同樣的錯誤

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. 
    } 

} 

而且新的錯誤是：

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) 

什麼可能是問題嗎？

更新＃代替

Answer 1

使用DES.class.getName()DES.getClass().getName()

• getClass()是一個成員函數，並且可以僅在一個類的實例調用，而不是類的類型
• DES表示類，而不是類DES的實例。