HMAC Generator
Compute HMAC-SHA-256/384/512 signatures — locally.
See how it works
Watch a quick simulation of this tool in action — no file needed.
How to use HMAC Generator
Follow these steps — everything happens instantly in your browser.
- 1
Step 1. Enter the message you want to authenticate.
- 2
Step 2. Enter your secret key (it's masked by default).
- 3
Step 3. Choose the algorithm: SHA-256, SHA-384 or SHA-512.
- 4
Step 4. Click Compute HMAC and copy the hex signature.
Why use this tool
Frequently asked questions
Everything you might want to know about hmac generator.
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