Generate HMAC (Hash-based Message Authentication Code) for text or files. HMAC combines a cryptographic hash function with a secret key for secure authentication.
Local Processing
Web Crypto API
Multiple Algorithms
Key-based Security
Privacy First: All calculations are performed locally in your browser using the Web Crypto API. No data is sent to our servers, ensuring complete privacy and security of your content and keys.
Advanced Settings
Configure encoding, formatting, and processing options
Text to HMAC
Enter any text and a secret key to generate its HMAC hash
Quick Examples
Click any example below to try it instantly
Frequently Asked Questions
HMAC (Hash-based Message Authentication Code) is a specific type of message authentication code (MAC) involving a cryptographic hash function and a secret cryptographic key. It provides both data integrity and authenticity verification.
