sec_cmac_internal.h

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#pragma once
 
#ifdef __cplusplus
extern "C" {
#endif
 
#include <stdint.h>
 
#include "ra8_attributes.h"
#include "ra8_err.h"

typedef enum : uint16_t {
  k_ra8_sec_cmac_tag_bytes     = 16U,  
  k_ra8_sec_cmac_key_128       = 16U,  
  k_ra8_sec_cmac_key_256       = 32U,  
  k_ra8_sec_cmac_max_msg_bytes = 256U, 
} ra8_sec_cmac_limits_t;

RA8_PRIV [[nodiscard]] ra8_err_t priv_ra8_sec_cmac_compute(const uint8_t* key,
                                                           uint16_t       key_len,
                                                           const uint8_t* msg,
                                                           uint32_t       msg_len,
                                                           uint8_t*       out_mac);

RA8_PRIV [[nodiscard]] ra8_err_t priv_ra8_sec_cmac_verify(const uint8_t* key,
                                                          uint16_t       key_len,
                                                          const uint8_t* msg,
                                                          uint32_t       msg_len,
                                                          const uint8_t* mac,
                                                          uint16_t       mac_len);
 
#ifdef __cplusplus
}
#endif