sundayenglish_agency/app/Http/Controllers/KeygenController.php

<?php

namespace App\Http\Controllers;

use App\Traits\Authorizable;
use App\Models\Post;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\Auth;
use phpseclib3\Crypt\RSA;
use phpseclib3\Crypt\PublicKeyLoader;
use App\Models\User;

class KeygenController extends Controller
{
    use Authorizable;

    /**
     * Display a listing of the resource.
     *
     * @return \Illuminate\Http\Response
     */
    public function index()
    {
        // $rsa = new RSA();
        $keys = RSA::createKey(1024);
        // dd($keys);
        $publicKey = $keys->getPublicKey();
        $privateKey = $keys;
        return view('keygen.index', compact('publicKey', 'privateKey'));
    }

    public function descrypt() {
      return view('keygen.descrypt');
    }

    public function descryption(Request $request)
    {
        $private = file_get_contents('key.pem');;

        $ciphertext = $request->ciphertext;

        $private = openssl_get_privatekey($private, "phrase");

        openssl_private_decrypt(base64_decode($ciphertext), $plaintext, $private);

        return view('keygen.descrypt', compact('plaintext', 'ciphertext'));
    }

    public function login(Request $request) {
        $private = file_get_contents('key.pem');

        if(empty($request->password) || $request->password != env('BSR_DEFAULT_PASSWORD', '1qaz2wsxA@')) {
          return response()->json(['request' => $request->all(), 'error' => 1, 'message' => "Password invalid"], 200);
        }

        $ciphertext = $request->ciphertext;

        $private = openssl_get_privatekey($private, "phrase");

        openssl_private_decrypt(base64_decode($ciphertext), $plaintext, $private);

        $info = json_decode($plaintext);

        $user = User::where('email', $info->usFingerprint)
                  ->orWhere('login_name', $info->usFingerprint)
                  ->orWhere('user_code', $info->usFingerprint)
                  ->first();

        if(empty($user)) {
          return response()->json(['request' => $request->all(), 'error' => 1, 'message' => "Email invalid"], 200);
        }

        // Creating a token without scopes...
        $token = $user->createToken($user->id . ' token ' . time(), ['*'])->accessToken;

        $data['access_token'] = $token;
        $data['token_type'] = 'Bearer';
        $data['expires_in'] = 1296000;
        $data['refresh_token'] = $token;

        // return response()->json(['data' => $data, 'request' => $request->all(), 'error' => 0, 'message' => "Đăng nhập thành công"], 200);
        return response()->json($data, 200);
    }
}