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HMAC Generator

v1.0.0

Generate HMAC message authentication codes using SHA-256, SHA-384, or SHA-512 with any secret key.

Generates HMAC (Hash-based Message Authentication Code) signatures using a secret key and various hash algorithms.

How to use
  • →Enter the message and secret key, then select the hash algorithm.
  • →The HMAC hex value is computed automatically.
  • →Use HMAC-SHA256 for API request signing — it is the most widely supported.
  • →Try a preset from the example picker to see sample input.