HMAC Generator
NewCreate HMAC (Hash-based Message Authentication Code) signatures to verify data integrity and authenticity. Choose between HMAC-SHA1, HMAC-SHA256, and HMAC-SHA512 algorithms. Used widely in API authentication, webhook verification, and secure data transmission.
How to Use HMAC Generator
- 1Select the HMAC algorithm
- 2Enter the message
- 3Enter the secret key
- 4Click Generate HMAC
Your Privacy is Protected
HMAC Generator runs entirely in your browser. Your files and data are never uploaded to any server, never stored, and never shared. Everything happens locally on your device using secure browser APIs.
No server uploadNo account required100% freeWorks on all devices
Frequently Asked Questions
What is HMAC used for?
HMAC is used to verify that a message was not tampered with and was created by a party that knows the secret key. Common in JWT tokens, API request signing, and webhooks.
Which algorithm should I use?
HMAC-SHA256 is the industry standard for most applications. HMAC-SHA512 provides extra security margin.
Why Use This Tool?
Files never leave your device
No upload to any server
Instant processing in browser
100% free, no account needed
Tags
hmachmac sha256hmac generatormessage authenticationapi signature