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- #pragma once
- #include <stddef.h>
- #define HMAC_SHA256_RESULT_SIZE 32
- /* Compute Hashed Message Authentication Code with SHA-256, over BUFFER
- data of BUFLEN bytes using the KEY of KEYLEN bytes, writing the
- output to pre-allocated 32 byte minimum RESBUF buffer. Return 0 on
- success. */
- int hmac_sha256(const void* key, size_t keylen, const void* in, size_t inlen, void* restrict resbuf);
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