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Encoders & Crypto

HMAC Generator

Gratis HMAC generator. Creëer HMAC handtekeningen met SHA-1, 256, 384 of 512 en elk geheim. Hex en Base64 uitvoer. Voor webhook ondertekening, API auth.

Runs in your browser
Input
Output
Hex
Base64
Redactionele opmerking
Understanding · A signature, with a shared secret.
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Veelgestelde vragen
Quick answers.
›What is HMAC?
Hash-based Message Authentication Code — a way to verify a message hasn't been tampered with using a shared secret. Common in webhook signing.
›Is HMAC encryption?
No — HMAC is authentication. The message itself is in cleartext; HMAC just lets the receiver verify it came from someone with the same secret.
›Which algorithm should I use?
HMAC-SHA256 is the modern default. HMAC-SHA1 is still common in older systems but should be avoided for new work.
›Is my secret sent to a server?
No — generation runs entirely in your browser via the Web Crypto API.
›Is the generator free?
Yes — fully free, no signup.
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