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Developer ToolsHMAC Keyed-Hash Generator
Processed 100% locally in your browser

HMAC Keyed-Hash Generator

Generate a keyed-hash HMAC from a message and secret key, computed locally in your browser.

Quick Answer

HMAC Keyed-Hash Generator lets you: Generate a keyed-hash HMAC from a message and secret key, computed locally in your browser. To start, type or paste the message you want to sign.

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How to use this tool

  1. 1

    Enter your message

    Type or paste the message you want to sign.

  2. 2

    Enter your secret key

    Type the secret key used to compute the HMAC.

  3. 3

    Choose an algorithm

    Select SHA-1, SHA-256, SHA-384, or SHA-512.

  4. 4

    Copy the HMAC

    The resulting hex-encoded HMAC updates instantly — copy it with one click.

Frequently Asked Questions

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Enter a message and secret key above.