Security Tools

HMAC Generator

Generate HMAC signatures with SHA-1, SHA-256, SHA-384, and SHA-512. Verify API signatures, authenticate webhooks — all client-side, no data leaves your browser.

Secret Key

Your key stays in-browser. Click Random for a cryptographically secure 256-bit key.

Message
0 chars
Options
Input Source
Enter a secret key and message...
HMAC Results
HMAC signatures will appear here

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