Laravel APP_KEY Generator

Generate secure application encryption keys for Laravel projects. These keys are used for encrypting cookies, sessions, and other sensitive data.

Format:base64:<32 bytes>

Key Size:256 bits

Cipher:AES-256-CBC

Add to .env File

.env

APP_KEY=base64:...

Installation

1. Copy the key

Click on any generated key above to copy it to your clipboard.

2. Update your .env file

Paste the key as the value of APP_KEY in your Laravel project's .env file.

3. Clear config cache (if needed)

terminal

php artisan config:clear

Production Warning

Changing APP_KEY in production will invalidate all encrypted data, including user sessions, cookies, and any data encrypted with the old key. Only change it during initial setup or if you suspect the key has been compromised.

Why Laravel Needs APP_KEY

Encrypts session data to prevent tampering
Secures cookies containing sensitive information
Used by Laravel's encryption facade for encrypt() and decrypt()
Protects CSRF tokens and other security features
Required for signed URLs and password reset tokens

Bulk Generation

Generatekeys

Generate Locally

The recommended way is to use Laravel's built-in command:

Laravel Artisan (preferred)

$php artisan key:generate

OpenSSL

$echo "base64:$(openssl rand -base64 32)"

PHP CLI

$php -r "echo 'base64:' . base64_encode(random_bytes(32)) . PHP_EOL;"