composer require irfa/encrypt-file-laravel 

'providers' => [ .... Irfa\FileSafe\FileSafeServiceProvider::class, ]; 

'aliases' => [ .... 'FileSafe' => Irfa\FileSafe\Facades\FileSafe::class, ], 

php artisan vendor:publish --tag=file-safe 

config/irfa/filesafe.php 

<?php namespace App\Http\Controllers; use Filesafe; use Illuminate\Http\Request; use App\Http\Controllers\Controller; class FileController extends Controller { public function upload_file(Request $request) { $file = $request->file('file'); FileSafe::store($file); //This is to encrypt the file before it is uploaded to the server. } } 

<?php namespace App\Http\Controllers; use FileSafe; use Illuminate\Http\Request; use App\Http\Controllers\Controller; class FileController extends Controller { public function upload_file(Request $request) { $file = 'encrypted_file.txt'; return FileSafe::download($file); //decrypt files to be downloaded. } } 

... $file = 'encrypt_file.txt'; return FileSafe::file($file)->raw(); ...