import javax.crypto.Cipher;
import javax.crypto.KeyGenerator;
import javax.crypto.SecretKey;
import javax.crypto.spec.SecretKeySpec;

/**
 * <B>Section 1</B>
 * <P>
 * Short example to kick-off the book. 
 * 
 * @author <a href="mailto:jasonweiss@yahoo.com">Jason R. Weiss</a>
 * @version 1.0
 *
 */
public class DES_ECB
{
	public static void main(String[] args)
	{
		try
		{
			KeyGenerator kg = KeyGenerator.getInstance("DES");
			SecretKey key = kg.generateKey();

			SecretKeySpec keySpec = new
                        SecretKeySpec(key.getEncoded(), "DES");		

			Cipher cipher = Cipher.getInstance("DES");
			cipher.init(Cipher.ENCRYPT_MODE, keySpec);
			
			String plainText = "This is a secret";
				
			byte[] cipherText = cipher.doFinal(plainText.getBytes());
				
			System.out.println("Resulting Cipher Text:\n");
			for(int i=0;i<cipherText.length;i++)
			{
				System.out.print(cipherText[i] + " ");
			}
			System.out.println("");
                        
                        
                        
                        
			
		} catch (Exception e)
		{
			e.printStackTrace();
		}
	}
}