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Current File : //home2/selectio/www/geniusgroove.in/crm/application/libraries/Ccavenue_crypto.php

<?php

if (!defined('BASEPATH'))
    exit('No direct script access allowed');

class Ccavenue_crypto {

    function __construct() {
        $this->CI = & get_instance();
    }

function encrypt($plainText,$key)
{
$key = $this->hextobin(md5($key));
	$initVector = pack("C*", 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f);
	$openMode = openssl_encrypt($plainText, 'AES-128-CBC', $key, OPENSSL_RAW_DATA, $initVector);
	$encryptedText = bin2hex($openMode);
	return $encryptedText;
}

/*
* @param1 : Encrypted String
* @param2 : Working key provided by CCAvenue
* @return : Plain String
*/


function decrypt($encryptedText,$key)
{
		$key = $this->hextobin(md5($key));
	$initVector = pack("C*", 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f);
	$encryptedText = $this->hextobin($encryptedText);
	$decryptedText = openssl_decrypt($encryptedText, 'AES-128-CBC', $key, OPENSSL_RAW_DATA, $initVector);
	return $decryptedText;
}

function hextobin($hexString) 
 { 
	$length = strlen($hexString); 
	$binString="";   
	$count=0; 
	while($count<$length) 
	{       
	    $subString =substr($hexString,$count,2);           
	    $packedString = pack("H*",$subString); 
	    if ($count==0)
	    {
			$binString=$packedString;
	    } 
	    
	    else 
	    {
			$binString.=$packedString;
	    } 
	    
	    $count+=2; 
	} 
        return $binString; 
  } 
}

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