des_cbc.java

this code implements the DES with CBC algorithm in the platform visual studio 2005

package des_cbc;

import javax.crypto.Cipher;   
import javax.crypto.SecretKey;   
import javax.crypto.SecretKeyFactory;   
import javax.crypto.spec.*;   
import sun.misc.*;    

public class DES_CBC {
		
    // The initialization vector should be 8 bytes   
    static private final byte[] EncryptionIV = { 0x11, 0x22, 0x4F, 0x58, (byte) 0x88,   
            0x10, 0x40, 0x38};   
    private final static String DES = "DES/CBC/PKCS5Padding";   
    static private String EncryptionString;
    
    public DES_CBC(String EncryptionString) {   
        this.EncryptionString = EncryptionString;   
    }   
    
	
    public byte[] EncryptionByteData(byte[] SourceData) throws Exception {  
	
		  //String EncryptionString="Hello123Hello123Hello123Hello123";
		  byte[] retByte = null;
		  
		  //Create SecretKey object
		  
		  byte[] EncryptionByte = EncryptionString.getBytes();   
	      DESKeySpec dks = new DESKeySpec(EncryptionByte);   
	      SecretKeyFactory keyFactory = SecretKeyFactory.getInstance("DES");   
	      SecretKey securekey = keyFactory.generateSecret(dks);   
	      
	      
	      // Create IvParameterSpec object with initialization vector   
	        IvParameterSpec spec = new IvParameterSpec(EncryptionIV); 
		  
	  
	        // Create Cipter object   
	        Cipher cipher = Cipher.getInstance(DES);   
	  
	        // Initialize Cipher object   
	        cipher.init(Cipher.ENCRYPT_MODE, securekey, spec);   
	  
	        // Encrypting data   
	        retByte = cipher.doFinal(SourceData);   
	        return retByte;   

	}
    public String EncryptionStringData(String SourceData) throws Exception {   
        String retStr = null;   
        byte[] retByte = null;   
  
        // Transform SourceData to byte array   
        byte[] sorData = SourceData.getBytes();   
  
        // Encrypte data   
        retByte = EncryptionByteData(sorData);   
  
        // Encode encryption data   
        BASE64Encoder be = new BASE64Encoder();   
        retStr = be.encode(retByte);   
  
        return retStr;   
    } 
    
    
    public static void main(String[] args) throws Exception {   
    	DES_CBC c = new DES_CBC("12345678");   //This is the key
        System.out.println(c.EncryptionStringData("13764528738fefqawe"));//The source data   
    }   
	
}