HMAC Generator
Generate HMAC signatures with SHA-256, SHA-384 or SHA-512 using the browser Web Crypto API.
What is HMAC Generator?
Generate HMAC signatures with SHA-256, SHA-384 or SHA-512 using the browser Web Crypto API. The tool runs locally in a modern browser and does not require signup.
How to use this tool
- Enter the values you want to process.
- Select the relevant options.
- Run the tool and copy the result.
What HMAC does
HMAC combines a secret key with a cryptographic hash function to authenticate a message. This tool supports common SHA-2 algorithms through the browser Web Crypto API.
Practical notes
Use the output as a technical aid and verify security-sensitive, production or provider-specific requirements against the documentation for the system you are working with.
Why use this tool?
- No account required.
- Fast browser-based processing.
- Useful for testing and development workflows.
- Related tools are linked below.
Frequently Asked Questions
Is HMAC Generator free?
Yes. It can be used without creating an account.
Does the tool process data locally?
The calculation runs in your browser where supported.
Should I verify production security settings?
Yes. Always check the official documentation and your application security requirements before using a result in production.