A LITTLE HELP FOR YOUR NEXT TASK
HMAC Generator
Create and verify keyed message authentication codes locally.
Private by design
Your inputs stay on your device and are not sent to our servers. Optional usage analytics does not receive your files or tool inputs.
Preparing your private workspace…
How to use HMAC Generator
- Enter a message, secret and SHA algorithm.
- Choose UTF-8 or HEX key encoding and calculate the HMAC.
- Compare an expected signature or copy HEX and Base64 outputs.
What are the limits of HMAC Generator?
HMAC authenticates bytes only when both parties keep the key secret. It is not public-key signing. Up to 1 million message characters.