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HMAC Generator

Generate Hash-based Message Authentication Codes (HMAC). Use this free and completely local tool securely in your browser to get the best developer experience.

Generate Hash-based Message Authentication Codes (HMAC) using a secret key and a hashing algorithm of your choice (e.g., MD5, SHA-1, SHA-256).

What is HMAC?

HMAC is a specific type of message authentication code (MAC) involving a cryptographic hash function and a secret cryptographic key. It may be used to simultaneously verify both the data integrity and the authentication of a message.

What is the HMAC Generator?

The HMAC Generator is a free, privacy-first tool that runs entirely in your browser. It is designed for developers, analysts, and anyone who needs to quickly and securely process data without uploading it to an untrusted third-party server.

Features

  • Privacy First: Your data never leaves your device.
  • Lightning Fast: Everything is processed instantly using client-side JavaScript.
  • Easy to Use: A clean, distraction-free interface built for professionals.

How to use this tool

  1. Paste or enter your data into the input field.
  2. The tool will automatically process your input.
  3. Review the results on the screen.
  4. Copy or download the output as needed.