Question: Design the cryptosystem by providing step by step implementation of the encryption algorithm of Hash-based Message Authentication Code in C Language that h as encryption

Design the cryptosystem by providing step by step implementation of the encryption algorithm of Hash-based Message Authentication Code in C Language that has encryption but no decryption using SHA3 to calculate the HMAC.

I have seen some answers posted on Chegg Study for this but none of the codes run on online compilers so please don't send me the same ones again! Thank you for your help

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