1  #pragma once
 2  
 3  #include <stdint.h>
 4  
 5  #include "nrf_crypto.h"
 6  
 7  #if defined(__cplusplus)
 8  extern "C" {
 9  #endif // __cplusplus
10  
11  #define CURRENT_SETTINGS_VERSION	0
12  
13  #define NTAG_P_ACK_SIZE 2
14  #define CRYPTO_KEY_SIZE				80
15  
16  typedef struct app_settings_s {
17  	uint32_t version;
18  	uint32_t boot_screen_timeout_ms;
19  	uint8_t backlight_brightness;
20  	uint8_t ntag_default_password_authentication_acknowledgement[NTAG_P_ACK_SIZE];
21  	struct crypto_expected_values_s
22  	{
23  		uint8_t combined_keys[NRF_CRYPTO_HASH_SIZE_SHA256];
24  	} crypto_expected_values;
25  	struct crypto_key_s
26  	{
27  		char data_key[CRYPTO_KEY_SIZE];
28  		char tag_key[CRYPTO_KEY_SIZE];
29  	} crypto_keys;
30  } app_settings_t;
31  
32  extern app_settings_t SETTINGS;
33  
34  #if defined(__cplusplus)
35  }
36  #endif // __cplusplus
37  
38  #ifdef __cplusplus
39  
40  #include "files/files_littlefs.h"
41  
42  namespace app::settings
43  {
44  	bool Load(files::Littlefs& flash);
45  	bool Save(files::Littlefs& flash);
46  }
47  
48  #endif // __cplusplus