HMAC Generator Online
Generate HMAC (Hash-based Message Authentication Code) using various hash algorithms. HMAC provides both data integrity and authentication with a secret key.
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About HMAC
What is HMAC?
HMAC (Hash-based Message Authentication Code) is a specific type of message authentication code that uses a cryptographic hash function and a secret key to verify data integrity and authenticity.
Common Use Cases
- • API authentication
- • JWT token signing
- • Message integrity verification
- • Secure communications
- • Digital signatures
Security Benefits
HMAC provides both data integrity and authentication. It's resistant to length extension attacks and provides strong security when used with secure hash functions like SHA-256.
Features
- • Multiple hash algorithms
- • Random key generation
- • Real-time hash generation
- • File upload support
- • Copy to clipboard
- • Download hash results
- • Client-side processing