HMAC Generator
Generate a keyed HMAC hash using a secret key combined with your message, used to verify both integrity and authenticity, common in API auth.
—About the HMAC Generator
An HMAC generator creates a keyed hash using a secret key combined with your message, used to verify both the integrity and authenticity of data, commonly in API authentication.
How to use
1
Enter your message and your secret key.
2
Choose the underlying hash algorithm, such as SHA-256.
3
Copy the resulting HMAC signature.
Frequently asked questions
How is HMAC different from a regular hash?
A regular hash only checks integrity, while HMAC also proves the sender knew the secret key, since anyone without the key cannot generate a matching HMAC.
Where is HMAC commonly used?
It's frequently used to sign API requests and webhook payloads so the receiver can verify they weren't tampered with in transit.
Explore more tools in the Password & Security category.