diff --git a/pages/_app.tsx b/pages/_app.tsx
index 5fcdf80..37aac1d 100644
--- a/pages/_app.tsx
+++ b/pages/_app.tsx
@@ -5,6 +5,7 @@ import { useEffect, useState } from 'react'
 
 import Footer from '../components/Footer'
 import Navbar from '../components/Navbar'
+import Crypto from 'crypto'
 
 import secret from '../secret.json'
 
@@ -62,7 +63,7 @@ export default function App({ Component, pageProps }: AppProps): JSX.Element {
 			<Navbar />
 			<div className='iu-is-the-best h-full text-black dark:text-gray-100 dark:bg-discord-dark bg-white'>
 				{
-					secret.tester === betaKey ? <Component {...pageProps} /> : <div className='text-center py-40 px-10'>
+					secret.tester === Crypto.createHmac('sha256', betaKey ?? '').digest('hex') ? <Component {...pageProps} /> : <div className='text-center py-40 px-10'>
 						<h1 className='text-3xl font-bold'>주어진 테스터키를 입력해주세요.</h1><br/>
 						<input value={betaKey} name='field_name' className='text-black border outline-none px-4 py-2 rounded-2xl' type='text' placeholder='테스터 키' onChange={(e)=> { localStorage.setItem('betaKey', e.target.value); setBetaKey(e.target.value) }} />
 					</div>