ESP32/main/hap/hap_internal.h

#pragma once

#include <stddef.h>
#include <stdint.h>

int hap_hkdf_sha512(const uint8_t *salt, size_t salt_len, const uint8_t *ikm,
                    size_t ikm_len, const uint8_t *info, size_t info_len,
                    uint8_t *okm, size_t okm_len);