HMAC Generator
Generates an HMAC-SHA256 signature from a message and secret key.
Lilu Baba's HMAC Generator computes an HMAC-SHA256 signature entirely in your browser using the native Web Crypto API — your secret key never leaves your device.
How to use this tool
- Enter your message and secret key.
- The HMAC-SHA256 signature updates instantly, computed with your browser's Web Crypto API.
FAQ
HMAC Generator — frequently asked questions
No — signing happens entirely in your browser using the Web Crypto API.
Verifying both the integrity and authenticity of a message — commonly used in API request signing and webhook verification.