how to print encrypted string in this encrypting/decrypting code ?

[bond_ankur]

Hi all,
here is full working code for encrypting and decrypting a string. It encrypts entered string and the decrypts it. It doesnt shows the encrypted string.

http://www.java-tips.org/java-se-ti...etric-keys.html

I just wanted to know how can i show enrypted string too.
PLEASE HELP...!!!

thanks,

[indiewolf]

kindly paste the complete url. (error)

cheers

[bond_ankur]

FILE NAME : LocalEncrypter.java


import javax.crypto.Cipher;
import javax.crypto.BadPaddingException;
import javax.crypto.IllegalBlockSizeException;
import javax.crypto.KeyGenerator;
import java.security.Key;
import java.security.InvalidKeyException;

public class LocalEncrypter {

private static String algorithm = "DESede";
private static Key key = null;
private static Cipher cipher = null;

private static void setUp() throws Exception {
key = KeyGenerator.getInstance(algorithm).generateKey();
cipher = Cipher.getInstance(algorithm);
}

public static void main(String[] args)
throws Exception {
setUp();
if (args.length !=1) {
System.out.println(
"USAGE: java LocalEncrypter " +
"[String]");
System.exit(1);
}
byte[] encryptionBytes = null;
String input = args[0];
System.out.println("Entered: " + input);
encryptionBytes = encrypt(input);
System.out.println(
"Recovered: " + decrypt(encryptionBytes));
}

private static byte[] encrypt(String input)
throws InvalidKeyException,
BadPaddingException,
IllegalBlockSizeException {
cipher.init(Cipher.ENCRYPT_MODE, key);
byte[] inputBytes = input.getBytes();
return cipher.doFinal(inputBytes);
}

private static String decrypt(byte[] encryptionBytes)
throws InvalidKeyException,
BadPaddingException,
IllegalBlockSizeException {
cipher.init(Cipher.DECRYPT_MODE, key);
byte[] recoveredBytes =
cipher.doFinal(encryptionBytes);
String recovered =
new String(recoveredBytes);
return recovered;
}
}

[indiewolf]

ok i think i have done what u had asked for.

lemme know if it works for u.

import javax.crypto.Cipher;
import javax.crypto.BadPaddingException;
import javax.crypto.IllegalBlockSizeException;
import javax.crypto.KeyGenerator;
import java.security.Key;
import java.security.InvalidKeyException;

public class LocalEncrypter {

private static String algorithm = "DESede";
private static Key key = null;
private static Cipher cipher = null;

private static void setUp() throws Exception {
key = KeyGenerator.getInstance(algorithm).generateKey(); 
cipher = Cipher.getInstance(algorithm);
}

public static String asHex (byte buf[]) {
      StringBuffer strbuf = new StringBuffer(buf.length * 2);
      int i;

      for (i = 0; i < buf.length; i++) {
       if (((int) buf[i] & 0xff) < 0x10)
	    strbuf.append("0");

       strbuf.append(Long.toString((int) buf[i] & 0xff, 16));
      }

      return strbuf.toString();
     }

public static void main(String[] args) 
throws Exception {
setUp();
if (args.length !=1) {
System.out.println(
"USAGE: java LocalEncrypter " +
"[String]");
System.exit(1);
}
byte[] encryptionBytes = null;
String input = args[0];
System.out.println("Entered: " + input);

encryptionBytes = encrypt(input);
System.out.println(
"Recovered: " + decrypt(encryptionBytes));
System.out.println("Encrypted String: " + asHex(encryptionBytes));
}

private static byte[] encrypt(String input)
throws InvalidKeyException, 
BadPaddingException,
IllegalBlockSizeException {
cipher.init(Cipher.ENCRYPT_MODE, key);
byte[] inputBytes = input.getBytes();
return cipher.doFinal(inputBytes);
}

private static String decrypt(byte[] encryptionBytes)
throws InvalidKeyException, 
BadPaddingException,
IllegalBlockSizeException {
cipher.init(Cipher.DECRYPT_MODE, key);
byte[] recoveredBytes = 
cipher.doFinal(encryptionBytes);
String recovered = 
new String(recoveredBytes);
return recovered;
}
private static String getBytes(String input) {
        return null;
    }

}