HMAC Signature Generator

Signature Copy

Key capabilities

  • Algorithm selection: SHA‑1, SHA‑256, SHA‑512.
  • Output formats: Hex or Base64.
  • Deterministic results with consistent encoding.

Usage

  1. Enter message and secret key.
  2. Pick hashing algorithm and output format.
  3. Generate and copy signature.

FAQ

What is HMAC?

HMAC (Hash‑based Message Authentication Code) combines a secret key with a cryptographic hash to verify message integrity and authenticity.