HMAC Generator

Generate HMAC hashes with secret keys for secure message authentication. All processing happens locally in your browser.

Input

Enter text and secret key to generate HMAC hash

Secret Key

Algorithm

Message to Hash

HMAC Hash Result

Enter text and secret key to generate HMAC hash

Your HMAC hash will appear here

Example Inputs

Try these examples to see HMAC generation in action

Generate signature for API authentication

Message: GET /api/users?timestamp=1234567890

Key: api_secret_key_123

Verify webhook payload authenticity

Message: {"event":"payment.completed","amount":100}

Key: webhook_secret

Sign JWT token payload

Message: eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiIxMjM0NTY3ODkwIn0

Key: jwt_secret_key

Basic HMAC generation example

Message: Hello World

Key: secret