HMAC Generator
Generate HMAC (Hash-based Message Authentication Code) signatures using SHA-1, SHA-256, SHA-384, or SHA-512.
Input
HMAC Result
Enter message and secret key to generate HMACFeatures
Multiple Algorithms
Support for SHA-1, SHA-256, SHA-384, SHA-512
Instant Generation
Real-time HMAC as you type
Secure Processing
Uses Web Crypto API
One-Click Copy
Copy result to clipboard instantly
What is HMAC?
HMAC (Hash-based Message Authentication Code) is a cryptographic authentication technique that uses a hash function combined with a secret key. It provides both data integrity and authenticity verification.
HMAC is widely used in API authentication, JWT tokens, and secure message transmission.