esp-idf/examples/bluetooth/blufi/main/blufi_example.h

#pragma once

#define BLUFI_EXAMPLE_TAG "BLUFI_EXAMPLE"
#define BLUFI_INFO(fmt, ...)   ESP_LOGI(BLUFI_EXAMPLE_TAG, fmt, ##__VA_ARGS__) 
#define BLUFI_ERROR(fmt, ...)  ESP_LOGE(BLUFI_EXAMPLE_TAG, fmt, ##__VA_ARGS__) 

void blufi_dh_negotiate_data_handler(uint8_t *data, int len, uint8_t **output_data, int *output_len, bool *need_free);
int blufi_aes_encrypt(uint8_t iv8, uint8_t *crypt_data, int crypt_len);
int blufi_aes_decrypt(uint8_t iv8, uint8_t *crypt_data, int crypt_len);
uint16_t blufi_crc_checksum(uint8_t iv8, uint8_t *data, int len);

int blufi_security_init(void);
void blufi_security_deinit(void);