What does HMAC Generator do?
Create an HMAC signature with SHA-256 or SHA-512. The workspace keeps the input and result together, making it easy to check the change before you use it elsewhere.
For example, you can create an HMAC signature with SHA-256 or SHA-512 when preparing a development or deployment value.
What you can control
HMAC Generator gives you direct control over secret key and algorithm.
How to use HMAC Generator
- 1
Paste or type the message you want to work with.
- 2
Set secret key and algorithm to match the result you need.
- 3
Run HMAC Generator, review the output, then copy or download it where available.
Tips for a better result
- Compare the HMAC Generator output with a known-good value when the result affects a real system.
- Change one setting at a time—especially secret key—so differences are easier to compare.
- Do not treat inspection or encoding as verification, encryption or permission to trust the source.
Frequently asked questions
Is my input private when I use HMAC Generator?+
HMAC Generator processes the value locally in this browser. Use a trusted device and never paste a secret if the surrounding system may be compromised.
What should I check after using HMAC Generator?+
Do not treat inspection or encoding as verification, encryption or permission to trust the source.