Encryption configuration for the ANT stack and channels. More...

Modules
	Cryptographic ANT stack configuration configuration

Data Structures
struct	ant_encrypt_channel_settings_t
	ANT channel cryptographic configuration. More...

union	ant_encrypt_info_settings_t
	ANT encryption information. More...

struct	ant_encrypt_adv_burst_settings_t
	Advanced burst settings used by the encrypted channel. More...

struct	ant_encrypt_stack_settings_t
	ANT stack cryptographic configuration. More...

Macros
#define	ANT_CRYPTO_INFO_SETTINGS_INIT (P_ENC_ID, P_USER_INFO, P_RAND_NUM_SEED)
	Macro for initializing an ANT encryption information structure. More...

#define	ANT_ENCRYPT_STACK_SETTINGS_BASE_DEF (NAME, P_KEY, P_ENC_ID)
	Macro for declaring the basic cryptographic configuration for the ANT stack. More...

#define	ANT_ENCRYPT_STACK_SETTINGS_BASE (NAME) (NAME##_ant_crypto_settings)
	Macro for accessing the configuration instance created by ANT_ENCRYPT_STACK_SETTINGS_BASE_DEF . More...

Typedefs
typedef void(*	ant_encryp_user_handler_t )(uint8_t channel, ant_encrypt_user_evt_t event)
	Event handler for ANT encryption user events.

Enumerations
enum	ant_encrypt_user_evt_t { ANT_ENC_EVT_NEGOTIATION_SUCCESS , ANT_ENC_EVT_NEGOTIATION_FAIL , ANT_ENC_EVT_CHANNEL_LOST }
	ANT encryption negotiation events. More...

Functions
ret_code_t	ant_channel_encrypt_config_perform (uint8_t channel_number, ant_encrypt_channel_settings_t *p_crypto_config)
	Function for applying an encryption configuration to a slave channel. More...

ret_code_t	ant_channel_encrypt_config (uint8_t channel_type, uint8_t channel_num, ant_encrypt_channel_settings_t *p_crypto_config)
	Function for applying an encryption configuration to a master or slave channel. More...

ret_code_t	ant_stack_encryption_config ( ant_encrypt_stack_settings_t const *const p_crypto_info_set)
	Function for configuring the cryptographic settings of the ANT stack. More...

void	ant_encrypt_event_handler ( ant_evt_t *p_ant_evt)
	Function for handling ANT encryption events. More...

void	ant_enc_event_handler_register ( ant_encryp_user_handler_t p_handler)
	Function for registering an event handler for ANT encryption events. More...

Advanced burst configuration for encryption modules
#define	ADV_BURST_CFG_MIN_SIZE 8
	Minimum size of the advance burst configuration data.

#define	ADV_BURST_CFG_PACKET_SIZE_INDEX 1
	Index of the packet size field in the configuration data.

#define	ADV_BURST_CFG_REQUIRED_FEATURES 2
	Index of the required features field in the configuration data.

#define	ADV_BURST_CFG_OPTIONAL_FEATURES 5
	Index of the optional features field in the configuration data.

Detailed Description

Encryption configuration for the ANT stack and channels.

Macro Definition Documentation

#define ANT_CRYPTO_INFO_SETTINGS_INIT	(	P_ENC_ID,
		P_USER_INFO,
		P_RAND_NUM_SEED
	)

Value:

         {                                                                         \
        
         .items =                                                              \
        
         {                                                                     \
        
         .p_encryption_id   = P_ENC_ID,                                    \
        
         .p_user_info       = P_USER_INFO,                                 \
        
         .p_random_num_seed = P_RAND_NUM_SEED                              \
        
         }                                                                     \
        
         }

Macro for initializing an ANT encryption information structure.

Parameters

[in]	P_ENC_ID	Pointer to the encryption ID of the device (4 bytes).
[in]	P_USER_INFO	Pointer to the user information string (19 bytes).
[in]	P_RAND_NUM_SEED	Pointer to the random number seed (16 bytes).

#define ANT_ENCRYPT_STACK_SETTINGS_BASE ( NAME ) (NAME##_ant_crypto_settings)

Macro for accessing the configuration instance created by ANT_ENCRYPT_STACK_SETTINGS_BASE_DEF .

Parameters

[in] NAME Name of the settings instance.

#define ANT_ENCRYPT_STACK_SETTINGS_BASE_DEF	(	NAME,
		P_KEY,
		P_ENC_ID
	)

Value:

         
          ant_encrypt_adv_burst_settings_t
         
         NAME##_ant_enc_adv_burst_set =                \
        
         {                                                                              \
        
         .
         
          packet_length
         
         =
         
          ADV_BURST_MODES_MAX_SIZE
         
         ,                              \
        
         .required_feature = 0,                                                     \
        
         .optional_feature = 0                                                      \
        
         };                                                                             \
        
         uint8_t                    * pp_##NAME##_key[1] = {P_KEY};
         
          \
         
          ant_encrypt_stack_settings_t
         
         NAME ## _ant_crypto_settings =                    \
        
         {                                                                              \
        
         .
         
          info
         
         =
         
          ANT_CRYPTO_INFO_SETTINGS_INIT
         
         (P_ENC_ID, NULL, NULL), \
        
         .pp_key             = pp_##NAME##_key,                                     \
        
         .key_number         = 1,                                                   \
        
         .p_adv_burst_config = &NAME##_ant_enc_adv_burst_set                        \
        
         }

Macro for declaring the basic cryptographic configuration for the ANT stack.

This macro configures the following settings:

Cryptographic key
Encryption ID
Advanced burst mode with the maximum RF payload size

Use ANT_ENCRYPT_STACK_SETTINGS_BASE to access the created configuration instance.

Parameters

[in]	NAME	Name for the created data instance.
[in]	P_KEY	Pointer to the cryptographic key (16 bytes).
[in]	P_ENC_ID	Pointer to the encryption ID (4 bytes).

Enumeration Type Documentation

enum ant_encrypt_user_evt_t

ANT encryption negotiation events.

Enumerator
ANT_ENC_EVT_NEGOTIATION_SUCCESS	Negotiation success.
ANT_ENC_EVT_NEGOTIATION_FAIL	Negotiation failure.
ANT_ENC_EVT_CHANNEL_LOST	Lost a channel. It's relevant only for slave channels.

Function Documentation

ret_code_t ant_channel_encrypt_config	(	uint8_t	channel_type ,
		uint8_t	channel_num ,
		ant_encrypt_channel_settings_t *	p_crypto_config
	)

Function for applying an encryption configuration to a master or slave channel.

When called for a master channel, this function enables encryption for that channel. When called for a slave channel, it saves the encryption configuration for future use.

This function should be used by the ANT channel configuration module.

Parameters

[in]	channel_type	ANT channel type: CHANNEL_TYPE_SLAVE or CHANNEL_TYPE_MASTER.
[in]	channel_num	ANT channel number.
[in]	p_crypto_config	Pointer to the encryption configuration.

Return values

NRF_SUCCESS	If the function completed successfully.
NRF_ERROR_INVALID_PARAM	If the channel type is invalid.
NRF_ERROR_MODULE_NOT_INITIALZED	If the stack is not configured for encryption.
Other	Otherwise, the error value returned by the ant_channel_encrypt_config_perform function is returned.

ret_code_t ant_channel_encrypt_config_perform	(	uint8_t	channel_number ,
		ant_encrypt_channel_settings_t *	p_crypto_config
	)

Function for applying an encryption configuration to a slave channel.

This function enables encryption on a channel.

This function should be used by the ANT encryption negotiation module and this module.

Parameters

[in]	channel_number	ANT channel number.
[in]	p_crypto_config	Pointer to the encryption configuration.

Returns: Value returned by sd_ant_crypto_channel_enable (for example, NRF_SUCCESS if the configuration was successful).

void ant_enc_event_handler_register ( ant_encryp_user_handler_t p_handler )

Function for registering an event handler for ANT encryption events.

The event handler should support all of the events in ant_encrypt_user_evt_t .

Parameters

[in] p_handler Pointer to a handler function.

void ant_encrypt_event_handler ( ant_evt_t * p_ant_evt )

Function for handling ANT encryption events.

This function should be used directly in the ANT event dispatching process. It serves the ANT encryption events to the registered event handler. If ANT encryption negotiation is used, this function is required.

This function should be used by the ANT encryption configuration module.

Parameters

[in] p_ant_evt Pointer to the ANT stack event message structure.

ret_code_t ant_stack_encryption_config ( ant_encrypt_stack_settings_t const *const p_crypto_info_set )

Function for configuring the cryptographic settings of the ANT stack.

Parameters

[in] p_crypto_info_set Pointer to the settings.

Modules

Data Structures

Macros

Typedefs

Enumerations

Functions

Advanced burst configuration for encryption modules

Detailed Description

Macro Definition Documentation

Enumeration Type Documentation

Function Documentation