Question: Assume the HMAC uses SHA-256 Hash function and the Output length of HMAC is 512 bits. If we want to get a hash code with

Assume the HMAC uses SHA-256 Hash function and the Output length of HMAC is 512 bits. If we want to get a hash code with length=1024, how many times is the SHA-256 used?

Give an answer and reasoning

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