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Filename : encryption_helper.php
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<?php
function pdpaencryptdata($data, $exclude_array = array(), $include_array = array()){
	$CI =& get_instance();
	$pdpadatafield 	= $CI->db->select('*')->where('active','0')->get('tbl_encryption_data_fields')->result_array();
	$pdpaarray 		= array();
	foreach ($pdpadatafield as $key => $pdpadata) {
		$pdpaarray[$key] = $pdpadata['field_name'];
	}
	$pdpaarray = array_unique($pdpaarray);
	
	$CI->encryption->initialize(
		array(
			'cipher' 	=> 'aes-128',
			'mode' 		=> 'ctr',
			'key'  		=> 'secure_key123',
		)
	);
	$new_data = array();
	$include_array = $pdpaarray;
	if(isset($include_array)){
		foreach($data as $key => $value){
			if(!in_array($key, $exclude_array) && trim($value) != ""){
				if(in_array($key, $include_array) && trim($value) != ""){
					$new_data[$key] = $CI->encryption->encrypt($value);
				}else{
					$new_data[$key] = $value;
				}
			}else{
				$new_data[$key] = $value;
			}
		}
	}else{
		$new_data = $data;
	}
	return $new_data;
}

function pdpadecryptdata($data, $exclude_array = array(), $include_array = array()){
	$CI =& get_instance(); 
	$CI->encryption->initialize(
		array(
			'cipher' 	=> 'aes-128',
			'mode' 		=> 'ctr',
			'key'  		=> 'secure_key123',
		)
	);
	$new_data = array();
	if(isset($data)){
		foreach ($data as $key => $value) {
			$checkvalue = $CI->encryption->decrypt($value);
			if($checkvalue ==''){
				$new_data[$key] = $value;
			}else{
				$new_data[$key] = $CI->encryption->decrypt($value);
			}
		}
	}else{
		$new_data = $data;
	}
	if(is_object($data)){
		return (object)$new_data;
	}
	return $new_data;
}

function pdpadecryptdata_multi_array($data, $exclude_array = array()){
	$CI =& get_instance();
	$CI->encryption->initialize(
		array(
			'cipher' 	=> 'aes-128',
			'mode' 		=> 'ctr',
			'key'  		=> 'secure_key123',
		)
	);
	
	$test_con = 0;
	$new_data = array();
	$obj_data = array();
	if(!empty($data)){
		foreach($data as $key => $value){
			
			if($test_con==0){
				if(is_object($value)){
					$test_con=1;
				}
			}
			
			foreach($value as $key1 => $value1){
				if(!in_array($key1, $exclude_array) && trim($value1) != ""){
					$checkvalue = $CI->encryption->decrypt($value1);
					if($checkvalue ==''){
						$new_data[$key][$key1] = $value1;
					}else{
						$new_data[$key][$key1] = $CI->encryption->decrypt($value1);
					}
				}else{
					$new_data[$key][$key1] = $value1;
				}
				
				if($test_con==1){
					$obj_data[$key] = (object)$new_data[$key];
				}else{
					$obj_data[$key] = $new_data[$key];
				}
			}
		}
		return $obj_data;
	}else{
		return $data;
	}
}

function pdpadecryptvalue($value){
	$CI =& get_instance(); 
	$CI->encryption->initialize(
		array(
			'cipher' => 'aes-128',
			'mode' => 'ctr',
			'key'  => 'secure_key123',
		)
	);
	$checkvalue = $CI->encryption->decrypt($value);
	if($checkvalue ==''){
		$newvalue = $value;
	}else{
		$newvalue = $CI->encryption->decrypt($value);
	}
	return $newvalue;
}

function pdpaencryptvalue($value){
	$CI =& get_instance(); 
	$CI->encryption->initialize(
		array(
			'cipher' => 'aes-128',
			'mode' => 'ctr',
			'key'  => 'secure_key123',
		)
	);
	return $CI->encryption->encrypt($value);
}

function html_injection($data){
	$data = html_escape($data);
	return $data;	
}

function security_methods($data){
	$data = html_injection($data);
	$data = pdpaencryptdata($data);
	return $data;
}
?>