Type the message to sign
Enter your secret key
Copy the generated signature
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HMAC (Hash-based Message Authentication Code) is a specific construction for creating a message authentication code (MAC) involving a cryptographic hash function and a secret key. It provides both data integrity and authenticity, allowing you to verify that a message comes from a trusted sender and hasn't been tampered with.
Type or paste the message you want to sign
Input your secret key (keep this secure!)
Choose SHA-256 for most applications
Copy the HMAC signature for your API request