HMAC Signature Generator
Text + Secret → HMAC Hex
Generate HMAC-SHA256, HMAC-SHA512, or HMAC-SHA1 message authentication signatures with a secret key.
About this tool
About HMAC Signature Generator
HMAC Signature Generator is a free, browser-based tool that lets you generate HMAC-SHA256, HMAC-SHA512, or HMAC-SHA1 message authentication signatures with a secret key. It supports Text + Secret → HMAC Hex. Everything runs locally on your device, so your files are never uploaded to a server. There's no sign-up, no watermark, and no limit — just open HMAC Signature Generator, add your input, and get results instantly.
How to use HMAC Signature Generator
1
Enter Secret
Provide HMAC secret key.
2
Generate HMAC
Computes HMAC-SHA256 signature.
3
Copy Signature
Copy hex signature string.
Key features
WebCrypto Authentication
Generates secure HMAC signatures locally.
100% Private
HMAC Signature Generator processes your data locally in the browser. Nothing is uploaded, tracked, or stored u2014 your files never leave your device.
Completely Free
Use HMAC Signature Generator as much as you want with no fees, no watermarks, and no hidden limits.
No Installation
HMAC Signature Generator runs in any modern browser. There's nothing to download, install, or configure.
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