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HMAC Generator

Compute HMAC of text with a secret key using SHA-1, SHA-256, SHA-384, or SHA-512 via the Web Crypto API. Browser-only.

100% in your browser. Files never uploaded.
HMAC (SHA-256) hex
Result will appear here.

How to use

  1. 1
    Enter key + message
    Both UTF-8 strings.
  2. 2
    Pick the SHA variant
    SHA-1/256/384/512 via Web Crypto.
  3. 3
    Read the hex
    Copy with one click. Nothing leaves your browser.

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