HMAC Generator
Sign a message with an HMAC key
All processing happens locally in your browser. Your data is never uploaded to a server.
Sign a message with an HMAC key
All processing happens locally in your browser. Your data is never uploaded to a server.
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HMAC combines a key with a hash, so only someone holding the same key can produce the same output. That is what makes it prove both integrity and origin, unlike a plain SHA-256 which anyone can compute.