<?php
if(!defined('sugarEntry') || !sugarEntry) die('Not A Valid Entry Point');
/*********************************************************************************
 * SugarCRM Community Edition is a customer relationship management program developed by
 * SugarCRM, Inc. Copyright (C) 2004-2011 SugarCRM Inc.
 * 
 * This program is free software; you can redistribute it and/or modify it under
 * the terms of the GNU Affero General Public License version 3 as published by the
 * Free Software Foundation with the addition of the following permission added
 * to Section 15 as permitted in Section 7(a): FOR ANY PART OF THE COVERED WORK
 * IN WHICH THE COPYRIGHT IS OWNED BY SUGARCRM, SUGARCRM DISCLAIMS THE WARRANTY
 * OF NON INFRINGEMENT OF THIRD PARTY RIGHTS.
 * 
 * This program is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 * FOR A PARTICULAR PURPOSE.  See the GNU Affero General Public License for more
 * details.
 * 
 * You should have received a copy of the GNU Affero General Public License along with
 * this program; if not, see http://www.gnu.org/licenses or write to the Free
 * Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
 * 02110-1301 USA.
 * 
 * You can contact SugarCRM, Inc. headquarters at 10050 North Wolfe Road,
 * SW2-130, Cupertino, CA 95014, USA. or at email address contact@sugarcrm.com.
 * 
 * The interactive user interfaces in modified source and object code versions
 * of this program must display Appropriate Legal Notices, as required under
 * Section 5 of the GNU Affero General Public License version 3.
 * 
 * In accordance with Section 7(b) of the GNU Affero General Public License version 3,
 * these Appropriate Legal Notices must retain the display of the "Powered by
 * SugarCRM" logo. If the display of the logo is not reasonably feasible for
 * technical reasons, the Appropriate Legal Notices must display the words
 * "Powered by SugarCRM".
 ********************************************************************************/

require_once('include/Pear/Crypt_Blowfish/Blowfish.php');

function sugarEncode($key, $data){
	return base64_encode($data);
}


function sugarDecode($key, $encoded){
	$data = base64_decode($encoded);
	return $data;
}

///////////////////////////////////////////////////////////////////////////////
////	BLOWFISH
/**
 * retrives the system's private key; will build one if not found, but anything encrypted before is gone...
 * @param string type
 * @return string key
 */
function blowfishGetKey($type) {
	$key = array();

	$type = str_rot13($type);

	$keyCache = "custom/blowfish/{$type}.php";

	// build cache dir if needed
	if(!file_exists('custom/blowfish')) {
		mkdir_recursive('custom/blowfish');
	}

	// get key from cache, or build if not exists
	if(file_exists($keyCache)) {
		include($keyCache);
	} else {
		// create a key
		$key[0] = create_guid();
		write_array_to_file('key', $key, $keyCache);
	}
	return $key[0];
}

/**
 * Uses blowfish to encrypt data and base 64 encodes it. It stores the iv as part of the data
 * @param STRING key - key to base encoding off of
 * @param STRING data - string to be encrypted and encoded
 * @return string
 */
function blowfishEncode($key, $data){
	$bf = new Crypt_Blowfish($key);
	$encrypted = $bf->encrypt($data);
	return base64_encode($encrypted);
}

/**
 * Uses blowfish to decode data assumes data has been base64 encoded with the iv stored as part of the data
 * @param STRING key - key to base decoding off of
 * @param STRING encoded base64 encoded blowfish encrypted data
 * @return string
 */
function blowfishDecode($key, $encoded){
	$data = base64_decode($encoded);
	$bf = new Crypt_Blowfish($key);
	return trim($bf->decrypt($data));
}

?>