I have a class name aes.php (found when googling). This class use Rijndael-128. here the aes.php
<?php /* Version: 1.0 */ class aes_encryption{ const CIPHER = MCRYPT_RIJNDAEL_128; // Rijndael-128 is AES const MODE = MCRYPT_MODE_ECB; public $key = 'abcdefghij123456'; // needs to be 32 bytes for aes public $iv = '1234efgh'; // needs to be 16 bytes for aes public function encrypt($plaintext){ $ciphertext = mcrypt_encrypt(self::CIPHER, $this->key, $plaintext, self::MODE, $this->iv); return base64_encode($ciphertext); } public function decrypt($ciphertext){ $ciphertext = base64_decode($ciphertext); $plaintext = mcrypt_decrypt(self::CIPHER, $this->key, $ciphertext, self::MODE, $this->iv); return rtrim($plaintext, "\0"); } public function encrypt_file($input_file, $output_file){ $input_file_handle = @fopen($input_file, "r"); $output_file_handle = @fopen($output_file, 'wb'); if(!$input_file_handle){ throw new Exception("Could not open input file"); } if(!$output_file_handle){ throw new Exception("Could not open output file"); } while(!feof($input_file_handle)){ $buffer = base64_encode(fread($input_file_handle, 4096)); $encrypted_string = $this->encrypt($buffer); //echo strlen($encrypted_string).'<br>'; fwrite($output_file_handle, $encrypted_string); } fclose($input_file_handle); fclose($output_file_handle); return true; } public function decrypt_file($input_file, $output_file){ $input_file_handle = @fopen($input_file, "r"); $output_file_handle = @fopen($output_file, 'wb'); if(!$input_file_handle){ throw new Exception("Could not open input file"); } if(!$output_file_handle){ throw new Exception("Could not open output file"); } while(!feof($input_file_handle)){ //4096 bytes plaintext become 7296 bytes of encrypted base64 text $buffer = fread($input_file_handle, 7296); $decrypted_string = base64_decode($this->decrypt($buffer)); //echo strlen($buffer).'<br>'; fwrite($output_file_handle, $decrypted_string); } fclose($input_file_handle); fclose($output_file_handle); return true; } }//class aes_encryption ?> and a class name upload.php, this class is to upload a file and auto encrypt file when upload.
<?php include_once 'dbconfig.php'; include 'aes.php'; session_start(); if($_SESSION['user'] and ($_SESSION['nik'])){ } else{ header("location:index.php"); } if(isset($_POST['btn-upload'])) $file =rand(1000,100000)."-".$_FILES['file']['name']; $file_loc =$_FILES['file']['tmp_name']; $file_size =$_FILES['file']['size']; $dekripsi =$_POST['dekripsi']; $file_type =$_FILES['file']['type']; $file_nik = $_SESSION ['nik']; $file_namalengkap = $_SESSION ['user']; $folder="uploads/"; $new_size = $file_size/1024; $new_file_name = strtolower($file); $final_file=str_replace(' ','-',$new_file_name); if (move_uploaded_file($file_loc,$folder.$final_file)){ $sql="INSERT INTO tbl_uploads(file,namalengkap,nik,dekripsi,type,size) VALUES('$final_file','".$_SESSION ['user']."','".$_SESSION ['nik']."','$dekripsi','$file_type','$new_size')"; mysql_query($sql); echo mysql_error(); $crypt = new aes_encryption(); $final_file = $file_loc; $crypt->encrypt_file($final_file, $final_file.'.enc'); ?> <script> alert('successfully uploaded'); window.location.href='home.php?success'; </script> <?php } else { ?> <script> alert('gagal upload'); window.location.href='home.php?fail'; </script> <?php } ?> and I am trying to run, but it show me error,
Fatal error: Uncaught exception 'Exception' with message 'Could not open input file' in C:\xampp\htdocs\aes\aes.php:29 Stack trace: #0 C:\xampp\htdocs\aes\uploadaes.php(40): aes_encryption->encrypt_file('C:\xampp\tmp\ph...', 'C:\xampp\tmp\ph...') #1 {main} thrown in C:\xampp\htdocs\aes\aes.php on line 29
I think the problem is $final_file = $file_loc ; cant get the value, and I dont know why it cant get the value of $file_loc but if you have opinion where is the problem, could you tell me?
