HMAC Generator

Compute HMAC signatures with Web Crypto.

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How it works

  1. Enter message and secret.
  2. Choose algorithm.
  3. Copy the hex digest.

Features

  • SHA-1/256/512
  • Web Crypto
  • Local
  • Hex output

FAQ

Is the secret uploaded?

No. Signing stays in your browser.

Hex or Base64?

Hex.

Timing safe?

For local tooling; use proper APIs in production.

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