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Robert Askam

HMAC-SHA3 Generator

Build HMAC-SHA3 codes with a 224, 256, 384 or 512-bit SHA-3 digest. Enter a message and secret key, then copy the result as HEX or Base64.

How to use it

Choose the SHA-3 output length, enter your key as text or HEX and type the message. The HMAC recalculates whenever anything changes.