Question 1

What is the HMAC Generator and what does it do?

Accepted Answer

This HMAC Generator is a security tool designed to create Hash-based Message Authentication Code signatures using a message and a secret key. It allows developers to verify data integrity and authenticity for various applications like Stripe or GitHub webhooks.

Question 2

How do I use this tool to sign an API request?

Accepted Answer

To sign a request, simply enter your message payload and your secret key into the provided fields, then select your desired algorithm such as HMAC-SHA256. The tool will instantly generate a signature that you can copy to use in your API headers or webhook validation logic.

Question 3

Which HMAC algorithms are supported by this generator?

Accepted Answer

The tool supports a variety of industry-standard hashing algorithms including HMAC-SHA1, HMAC-SHA256, HMAC-SHA384, and HMAC-SHA512. These options ensure compatibility with most modern authentication systems and security protocols.

Question 4

Is my secret key and data secure when using this tool?

Accepted Answer

Yes, your data remains private because this tool uses the browser's native Web Crypto API to perform calculations locally on your device. Your secret keys and messages are never sent to a server, ensuring that your sensitive information stays within your own environment.

Question 5

What output formats are available for the generated signatures?

Accepted Answer

The HMAC Generator provides two primary output formats: Hexadecimal and Base64. This flexibility allows you to match the specific requirements of the service you are integrating with, such as standard webhook signatures or binary-encoded tokens.

Question 6

Is this HMAC Generator free to use?

Accepted Answer

This tool is completely free to use and does not require any credits or a paid subscription. Anonymous users can perform up to 200 operations, while authenticated users enjoy a higher rate limit of 1,000 requests.

Question 7

Does this tool require any software installation?

Accepted Answer

No installation is required as the tool runs entirely in your web browser. It leverages modern web standards to generate high-performance cryptographic hashes without the need for external plugins or server-side processing.

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