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Interactive HMAC Generator
SecurityGenerate HMAC signatures using various hash algorithms.
ttb run hmac-generator
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How to Use HMAC Generator
Enter your message text and secret key. Select a hash algorithm (SHA-256, SHA-384, SHA-512, or MD5). Click "Generate" to compute the HMAC (Hash-based Message Authentication Code). The output is a hexadecimal digest that can verify both data integrity and authenticity.
1
Enter your parameters
Configure the inputs for the Hmac Generator according to your specific needs.
2
View real-time results
The utility instantly processes your request and displays the calculated outputs directly in your browser.
3
Copy or Download
Click the copy icon next to the final output to instantly grab the result, or export it if applicable.
Frequently Asked Questions
What is HMAC?+
HMAC combines a cryptographic hash function with a secret key to produce a message authentication code. Unlike a plain hash, HMAC proves that the message was created by someone who knows the secret key and hasn't been tampered with.
When should I use HMAC vs digital signatures?+
HMAC is symmetric (both parties share the same key) and is fast - ideal for API authentication and webhook verification. Digital signatures are asymmetric (public/private key pair) and provide non-repudiation - better for documents and transactions.
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