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HMAC Generator
Generate a keyed HMAC with a UTF-8 secret.
Your results will appear here.
Three steps. That’s it.
A useful toolkit for text, data, images and calculations.
- 01
Add your input
Choose a tool, enter values or select a file.
- 02
Make it yours
Adjust the options and run the action.
- 03
Take the result
Copy the result or download its file.
Keyed message authentication code generator online
Reproduce a keyed digest for an integration test. The secret is UTF-8 text, not automatically decoded from hexadecimal or Base64.
How to use it
Enter the source input or select Try example. Review Secret, Algorithm. Select Run tool and inspect the result before copying or downloading.
Options and example settings
Worked examples
Reproduce a keyed digest for an integration test.
Worked example — HMAC Generator
Settings: Secret: example-key; Algorithm: SHA-256
Input:
Hello Kirikuba
Output:
4e9122886d0ebf5f2c6389431546b139ae801a694febdaed62430efcaf9ae727
Choose the right tool
An HMAC combines a secret key with a message. It does not encrypt the message or make a secret safe to publish. Both parties must agree on the algorithm and the exact input bytes.
Limitations and common mistakes
- The secret is UTF-8 text, not automatically decoded from hexadecimal or Base64.
Frequently asked questions
How can I compute an HMAC online?
Enter the source input or select Try example. Review Secret, Algorithm. Select Run tool and inspect the result before copying or downloading.
Where is my input processed?
The bundled tool processes input in your browser. It does not upload tool input to a conversion service. Other site plugins, analytics, advertising and browser extensions may have separate behavior.
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