HMAC Calculator
Calculate HMAC (Hash-based Message Authentication Code) values for message authentication and data integrity.
HMAC Calculator
Generate HMAC-SHA1 and HMAC-SHA256 values for message authentication and integrity verification.
This is a simplified version of the HMAC calculator for troubleshooting purposes.
Understanding HMAC
What is HMAC?
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 a way to verify both the data integrity and the authenticity of a message.
EMV Decoder tools perform all calculations client-side for maximum security.
No sensitive data is ever transmitted to our servers.