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();
...