HMAC Generator
Generate Hash-based Message Authentication Codes (HMAC) instantly using SHA-256 and SHA-512.
What is HMAC?
HMAC (Hash-based Message Authentication Code) is a specific type of message authentication code (MAC) involving a cryptographic hash function and a secret cryptographic key. It may be used to simultaneously verify both the data integrity and the authentication of a message.
Where is HMAC Used?
Developers frequently encounter HMAC when working with APIs and webhooks. For instance, payment gateways like Stripe or messaging APIs like Twilio use HMAC signatures so your server can verify that the incoming webhook is genuinely from them and hasn't been tampered with in transit.