Generate HMAC SHA256 hash using key in C++

RDoonds Published at Dev

RDoonds

I am looking for some function or a way that would return HMAC SHA256 hash in C++ using secret key. I have seen documentation of Crypto++ and OpenSSL but it does not accept an extra parameter of secret key for computation. Can someone help me by providing some info, code snippets or links.

user2797321

OpenSSL docs for HMAC, clearly state the requirement of a 'key' as part of context initialization.

int HMAC_Init_ex(HMAC_CTX *ctx, const void *key, int key_len,
               const EVP_MD *md, ENGINE *impl);

HMAC() computes the message authentication code of the n bytes at d using the hash function evp_md and the key key which is key_len bytes long.

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edited at2020-10-24

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Generate HMAC SHA256 hash using key in C++

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