Auth Secret Generator

What is an Auth Secret?

An authentication secret is a private key used to encrypt cookies and tokens in authentication systems like NextAuth.js or Auth.js. This secret ensures that session data cannot be tampered with or forged by malicious actors.

Why Use a Strong Auth Secret?

The security of your entire authentication system depends on keeping your secret key secure and making it difficult to guess. A weak or predictable secret could allow attackers to forge valid sessions and gain unauthorized access to user accounts.

Using Your Auth Secret with NextAuth.js / Auth.js

Once you've generated a secure secret, you should store it in your environment variables. Here's how to use it with NextAuth.js:

// .env file
NEXTAUTH_SECRET=your_generated_secret_here

// In your NextAuth configuration
export const authOptions = {
  // Your other NextAuth options
  secret: process.env.NEXTAUTH_SECRET,
}

Best Practices for Auth Secrets

• Use long, random secrets - Your auth secret should be at least 32 characters and contain a mix of letters, numbers, and special characters.
• Keep your secret private - Never expose your auth secret in client-side code or public repositories.
• Use different secrets for different environments - Your development, staging, and production environments should each have their own unique secret.
• Rotate secrets periodically - Change your auth secret regularly, especially after team member departures or suspected breaches.

How Our Generator Works

Our auth secret generator creates cryptographically secure random strings using your browser's built-in cryptographic functions. The generated secrets never leave your device or get sent to our servers, ensuring complete privacy.