HMAC Generator
Generate secure Hash-based Message Authentication Codes (HMAC) for API authentication.
Hex Signature
Base64 Signature
What is HMAC?
HMAC (Hash-based Message Authentication Code) is a mechanism for calculating a message authentication code involving a cryptographic hash function in combination with a secret cryptographic key. It is widely used to verify the integrity and authenticity of a message, especially in API authentication (like AWS, Stripe, etc.).