HMAC Generator
Generate Hash-based Message Authentication Codes
Message Input
Enter the message to authenticate
Message length: 0 characters
Secret Key
Secret key for HMAC generation
Algorithm
Choose the hash algorithm
HMAC Result
Generated authentication code
About HMAC
HMAC (Hash-based Message Authentication Code) is a mechanism for message authentication using cryptographic hash functions.
HMAC (Hash-based Message Authentication Code) is a mechanism for message authentication using cryptographic hash functions.
Key Features:
- Provides both data integrity and authenticity
- Uses a secret key with a hash function
- Resistant to length extension attacks
- Widely used in APIs and security protocols
Common Uses:
- API authentication (AWS, GitHub, etc.)
- JWT token signing
- Message integrity verification
- Password-based authentication
Security Note: Keep your secret key secure and use SHA-256 or higher for production use.