Encryption using Triple Des

[Dave123]

Hello developers

 

I need a favor to know where i am getting wrong. I am doing encryption using TripleDes using Bouncy castle. I use php on server side to decrypt it. I wonder if is there any padding problem. I can not figure it out. The followig is my code for both the sides. I would appreciate your effort.

 

Key-XiTo74dOO09N48YeUmuvbL0E

Text  "This is a test Text"

 

Output  +óÚÛÈ?ga test Text

 

//J2me

 

public String performEncrypt(String key, String plainText)

{

 

 

 

BlockCipher engine = new DESedeEngine();

BufferedBlockCipher cipher = new PaddedBlockCipher(new CBCBlockCipher(engine));

 

byte[] keyBytes = key.getBytes();

byte[] input = plainText.getBytes();

 

cipher.init(true, new KeyParameter(keyBytes));

 

byte[] cipherText = new byte[cipher.getOutputSize(input.length)];

 

int outputLen = cipher.processBytes(input, 0, input.length, cipherText, 0);

try

{

cipher.doFinal(cipherText, outputLen);

}

catch (CryptoException ce)

{

System.err.println(ce);

System.exit(1);

}

 

return new String(Base64.encode(cipherText)).trim();

}//decryptText

 

//PHP

 

<?php

 

$key="XiTo74dOO09N48YeUmuvbL0E";

$encrypted = $_GET['id'];

$iv = mcrypt_create_iv (mcrypt_get_block_size (MCRYPT_TripleDES, MCRYPT_MODE_CBC), MCRYPT_DEV_RANDOM);

 

// Decrypting

function decrypt($string, $key) {

$dec = "";

$string = trim(base64_decode($string));

global $iv;

$dec = mcrypt_cbc (MCRYPT_TripleDES, $key, $string, MCRYPT_DECRYPT, $iv);

return $dec;

}

 

 

$decrypted = decrypt($encrypted, $key);

 

 

echo "Decrypted is ".$decrypted ;

?>

 

Kind Regards