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Tom Utilities

Calcule assinaturas HMAC com SHA-1, SHA-256, SHA-384 ou SHA-512 em hex ou Base64.

Como usar

Generating an HMAC

Enter the secret key and message, then choose the hash algorithm and output encoding.

  1. Enter the key.
  2. Enter the message.
  3. Pick the algorithm and encoding.

Perguntas frequentes

Is my key uploaded?

No, the signature is computed locally with the Web Crypto API.

Which encoding should I use?

Hex is common; Base64 is often used in HTTP and JWT contexts.