Hii nordic;
I need to encrypt and decrypt my advertising data i.e;UUID,Major,Minor,etc.; of my nrf52832
So it cannot be seen by third parties
my sdk version is 15.2 and softdevice is 132
Hii nordic;
I need to encrypt and decrypt my advertising data i.e;UUID,Major,Minor,etc.; of my nrf52832
So it cannot be seen by third parties
my sdk version is 15.2 and softdevice is 132
Hi Naralasetty,
you can use the ECB peripheral to encrypt the advertisement data. See our Intro to Application-level Security Using the ECB Peripheral blog post.
Best regards
Bjørn
Hi bjorn,
I need the code for latest soft device 132
We do not have a blog post that has been made using the latest SD API, but it should be very similar, see sd_rand_application_bytes_available_get and sd_ecb_block_encrypt in the S132 v6.1.0.
Alternatively, you can use the nrf_crypto library we have a nrf_crypto_aes example that allows you to test the different AES modes, see Testing all AES modes.
Best regards
Bjørn
hi @bjorn-spockeli,
can you please add aes code to my code
#include <stdint.h>
#include <string.h>
#include "ble_advertising.h"
#include "nordic_common.h"
#include "nrf.h"
#include "nrf_soc.h"
#include "nrf_drv_saadc.h"
#include "nrf_sdm.h"
#include "app_error.h"
#include "ble.h"
#include "ble_err.h"
#include "ble_hci.h"
#include "ble_srv_common.h"
#include "ble_advdata.h"
#include "ble_tps.h"
#include "ble_ias.h"
#include "ble_lls.h"
#include "ble_bas.h"
#include "ble_conn_params.h"
#include "ble_conn_state.h"
#include "sensorsim.h"
#include "nrf_sdh.h"
#include "nrf_sdh_soc.h"
#include "nrf_sdh_ble.h"
#include "nrf_delay.h"
#include "app_timer.h"
#include "app_error.h"
#include "ble_ias_c.h"
#include "app_util.h"
#include "bsp_btn_ble.h"
#include "ble_db_discovery.h"
#include "peer_manager.h"
#include "peer_manager_handler.h"
#include "fds.h"
#include "ble_conn_state.h"
#include "nrf_ble_gatt.h"
#include "nrf_ble_lesc.h"
#include "nrf_ble_qwr.h"
//#include "nrf_ble_scan.h"
#include "nrf_pwr_mgmt.h"
#include "nrf_fstorage.h"
#include "nrf_log.h"
#include "nrf_log_ctrl.h"
#include "nrf_log_default_backends.h"
#define DEVICE_NAME "NORDIC"
#define APP_BLE_OBSERVER_PRIO 3
#define APP_BLE_CONN_CFG_TAG 1
#define BATTERY_LEVEL_MEAS_INTERVAL APP_TIMER_TICKS(120000)
#define MIN_CONN_INTERVAL MSEC_TO_UNITS(500, UNIT_1_25_MS)
#define MAX_CONN_INTERVAL MSEC_TO_UNITS(1000, UNIT_1_25_MS)
#define SLAVE_LATENCY 0
#define CONN_SUP_TIMEOUT MSEC_TO_UNITS(4000, UNIT_10_MS)
#define APP_ADV_INTERVAL 40
#define APP_ADV_TIMEOUT_IN_SECONDS 80
#define NON_CONNECTABLE_ADV_INTERVAL MSEC_TO_UNITS(100, UNIT_0_625_MS)
#define APP_ADV_DURATION 18000
#define BLE_ADV_DIRECTED_ENABLED true
#define BLE_ADV_DIRECTED_DISABLED false
#define BLE_ADV_DIRECTED_SLOW_ENABLED true
#define BLE_ADV_DIRECTED_SLOW_DISABLED false
#define BLE_ADV_FAST_ENABLED true
#define BLE_ADV_FAST_DISABLED false
#define BLE_ADV_SLOW_ENABLED true
#define BLE_ADV_SLOW_DISABLED false
#define BLE_ADV_WHITELIST_ENABLED true
#define BLE_ADV_WHITELIST_DISABLED false
#define FIRST_CONN_PARAMS_UPDATE_DELAY APP_TIMER_TICKS(5000)
#define NEXT_CONN_PARAMS_UPDATE_DELAY APP_TIMER_TICKS(30000)
#define MAX_CONN_PARAMS_UPDATE_COUNT 3
#define SEC_PARAM_BOND 1
#define SEC_PARAM_MITM 0
#define SEC_PARAM_LESC 0
#define SEC_PARAM_KEYPRESS 0
#define SEC_PARAM_IO_CAPABILITIES BLE_GAP_IO_CAPS_NONE
#define SEC_PARAM_OOB 0
#define SEC_PARAM_MIN_KEY_SIZE 7
#define SEC_PARAM_MAX_KEY_SIZE 16
#define BLE_GAP_ADV_TYPE_ADV_IND 0x00
#define BLE_GAP_ADV_TYPE_ADV_DIRECT_IND 0x01
#define BLE_GAP_ADV_TYPE_ADV_SCAN_IND 0x02
#define BLE_GAP_ADV_TYPE_ADV_NONCONN_IND 0x03
#define BLE_GAP_ADDR_TYPE_PUBLIC 0x00
#define BLE_GAP_ADDR_TYPE_RANDOM_STATIC 0x01
#define BLE_GAP_ADDR_TYPE_RANDOM_PRIVATE_RESOLVABLE 0x02
#define BLE_GAP_ADDR_TYPE_RANDOM_PRIVATE_NON_RESOLVABLE 0x03
#define INITIAL_LLS_ALERT_LEVEL BLE_CHAR_ALERT_LEVEL_NO_ALERT
#define TX_POWER_LEVEL (-8)
#define ADC_REF_VOLTAGE_IN_MILLIVOLTS 600
#define ADC_PRE_SCALING_COMPENSATION 6
#define DIODE_FWD_VOLT_DROP_MILLIVOLTS 270
#define ADC_RES_10BIT 1024
#define DEAD_BEEF 0xDEADBEEF
#define APP_BEACON_INFO_LENGTH 0x17
#define APP_ADV_DATA_LENGTH 0x15
#define APP_DEVICE_TYPE 0x02
#define APP_MEASURED_RSSI 0xC5
#define APP_COMPANY_IDENTIFIER 0x004C
#define APP_MAJOR_VALUE 0x00, 0x02
#define APP_MINOR_VALUE 0x00, 0x02
#define APP_BEACON_UUID 0x01, 0x12, 0x23, 0x34, \
0x45, 0x56, 0x67, 0x78, \
0x89, 0x9a, 0xab, 0xbc, \
0xcd, 0xde, 0xef, 0xf0
#define ECB_KEY_LEN (16UL)
#define COUNTER_BYTE_LEN (4UL)
#define NONCE_RAND_BYTE_LEN (12UL)
// The RNG wait values are typical and not guaranteed. See Product Specifications for more info.
#ifdef NRF51
#define RNG_BYTE_WAIT_US (677UL)
#elif defined NRF52
#define RNG_BYTE_WAIT_US (124UL)
#else
#error "Either NRF51 or NRF52 must be defined."
#endif
#if defined(USE_UICR_FOR_MAJ_MIN_VALUES)
#define MAJ_VAL_OFFSET_IN_BEACON_INFO 18
#define UICR_ADDRESS 0x10001080
#endif
#define ADC_RESULT_IN_MILLI_VOLTS(ADC_VALUE)\
((((ADC_VALUE) * ADC_REF_VOLTAGE_IN_MILLIVOLTS) / ADC_RES_10BIT) * ADC_PRE_SCALING_COMPENSATION)
APP_TIMER_DEF(m_battery_timer_id);
BLE_TPS_DEF(m_tps);
BLE_IAS_DEF(m_ias, NRF_SDH_BLE_TOTAL_LINK_COUNT);
BLE_LLS_DEF(m_lls);
BLE_BAS_DEF(m_bas);
BLE_IAS_C_DEF(m_ias_c);
NRF_BLE_GATT_DEF(m_gatt);
NRF_BLE_QWR_DEF(m_qwr);
BLE_ADVERTISING_DEF(m_advertising);
BLE_DB_DISCOVERY_DEF(m_ble_db_discovery);
static volatile bool m_is_high_alert_signalled;
static volatile bool m_is_ias_present = false;
static nrf_saadc_value_t adc_buf[2];
static ble_uuid_t m_adv_uuids[] =
{
{BLE_UUID_IMMEDIATE_ALERT_SERVICE, BLE_UUID_TYPE_BLE},
{BLE_UUID_BATTERY_SERVICE, BLE_UUID_TYPE_BLE},
{BLE_UUID_TX_POWER_SERVICE, BLE_UUID_TYPE_BLE},
{BLE_UUID_LINK_LOSS_SERVICE, BLE_UUID_TYPE_BLE}
};
static ble_gap_adv_params_t m_adv_params;
static uint8_t m_adv_handle = BLE_GAP_ADV_SET_HANDLE_NOT_SET;
static uint8_t m_enc_advdata[BLE_GAP_ADV_SET_DATA_SIZE_MAX];
static uint8_t m_enc_scandata[BLE_GAP_ADV_SET_DATA_SIZE_MAX];
static ble_gap_adv_data_t m_adv_data =
{
.adv_data =
{
.p_data = m_enc_advdata,
.len = BLE_GAP_ADV_SET_DATA_SIZE_MAX
},
.scan_rsp_data =
{
.p_data = m_enc_scandata,
.len = BLE_GAP_ADV_SET_DATA_SIZE_MAX
}
};
static uint8_t m_beacon_info[APP_BEACON_INFO_LENGTH] =
{
APP_DEVICE_TYPE,
APP_ADV_DATA_LENGTH,
APP_BEACON_UUID,
APP_MAJOR_VALUE,
APP_MINOR_VALUE,
APP_MEASURED_RSSI
};
static void on_ias_evt(ble_ias_t * p_ias, ble_ias_evt_t * p_evt);
static void on_lls_evt(ble_lls_t * p_lls, ble_lls_evt_t * p_evt);
static void on_ias_c_evt(ble_ias_c_t * p_lls, ble_ias_c_evt_t * p_evt);
static void on_bas_evt(ble_bas_t * p_bas, ble_bas_evt_t * p_evt);
static void advertising_init(void);
static void advertising_start(bool erase_bonds);
void assert_nrf_callback(uint16_t line_num, const uint8_t * p_file_name)
{
app_error_handler(DEAD_BEEF, line_num, p_file_name);
}
static void service_error_handler(uint32_t nrf_error)
{
APP_ERROR_HANDLER(nrf_error);
}
static void pm_evt_handler(pm_evt_t const * p_evt)
{
pm_handler_on_pm_evt(p_evt);
pm_handler_flash_clean(p_evt);
switch (p_evt->evt_id)
{
case PM_EVT_PEERS_DELETE_SUCCEEDED:
advertising_start(false);
break;
default:
break;
}
}
void saadc_event_handler(nrf_drv_saadc_evt_t const * p_event)
{
if (p_event->type == NRF_DRV_SAADC_EVT_DONE)
{
nrf_saadc_value_t adc_result;
uint16_t batt_lvl_in_milli_volts;
uint8_t percentage_batt_lvl;
uint32_t err_code;
adc_result = p_event->data.done.p_buffer[0];
err_code = nrf_drv_saadc_buffer_convert(p_event->data.done.p_buffer, 1);
APP_ERROR_CHECK(err_code);
batt_lvl_in_milli_volts = ADC_RESULT_IN_MILLI_VOLTS(adc_result) +
DIODE_FWD_VOLT_DROP_MILLIVOLTS;
percentage_batt_lvl = battery_level_in_percent(batt_lvl_in_milli_volts);
err_code = ble_bas_battery_level_update(&m_bas, percentage_batt_lvl, BLE_CONN_HANDLE_ALL);
if ((err_code != NRF_SUCCESS) &&
(err_code != NRF_ERROR_INVALID_STATE) &&
(err_code != NRF_ERROR_RESOURCES) &&
(err_code != NRF_ERROR_BUSY) &&
(err_code != BLE_ERROR_GATTS_SYS_ATTR_MISSING)
)
{
APP_ERROR_HANDLER(err_code);
}
}
}
static void db_disc_handler(ble_db_discovery_evt_t * p_evt)
{
ble_ias_c_on_db_disc_evt(&m_ias_c, p_evt);
}
static void adc_configure(void)
{
ret_code_t err_code = nrf_drv_saadc_init(NULL, saadc_event_handler);
APP_ERROR_CHECK(err_code);
nrf_saadc_channel_config_t config =
NRF_DRV_SAADC_DEFAULT_CHANNEL_CONFIG_SE(NRF_SAADC_INPUT_VDD);
err_code = nrf_drv_saadc_channel_init(0, &config);
APP_ERROR_CHECK(err_code);
err_code = nrf_drv_saadc_buffer_convert(&adc_buf[0], 1);
APP_ERROR_CHECK(err_code);
err_code = nrf_drv_saadc_buffer_convert(&adc_buf[1], 1);
APP_ERROR_CHECK(err_code);
}
static void battery_level_meas_timeout_handler(void * p_context)
{
UNUSED_PARAMETER(p_context);
ret_code_t err_code;
err_code = nrf_drv_saadc_sample();
APP_ERROR_CHECK(err_code);
}
static void timers_init(void)
{
ret_code_t err_code;
err_code = app_timer_init();
APP_ERROR_CHECK(err_code);
err_code = app_timer_create(&m_battery_timer_id,
APP_TIMER_MODE_REPEATED,
battery_level_meas_timeout_handler);
APP_ERROR_CHECK(err_code);
}
static void gap_params_init(void)
{
ret_code_t err_code;
ble_gap_conn_params_t gap_conn_params;
ble_gap_conn_sec_mode_t sec_mode;
BLE_GAP_CONN_SEC_MODE_SET_OPEN(&sec_mode);
err_code = sd_ble_gap_device_name_set(&sec_mode,
(const uint8_t *)DEVICE_NAME,
strlen(DEVICE_NAME));
APP_ERROR_CHECK(err_code);
err_code = sd_ble_gap_appearance_set(BLE_APPEARANCE_GENERIC_KEYRING);
APP_ERROR_CHECK(err_code);
memset(&gap_conn_params, 0, sizeof(gap_conn_params));
gap_conn_params.min_conn_interval = MIN_CONN_INTERVAL;
gap_conn_params.max_conn_interval = MAX_CONN_INTERVAL;
gap_conn_params.slave_latency = SLAVE_LATENCY;
gap_conn_params.conn_sup_timeout = CONN_SUP_TIMEOUT;
err_code = sd_ble_gap_ppcp_set(&gap_conn_params);
APP_ERROR_CHECK(err_code);
}
static void gatt_init(void)
{
ret_code_t err_code = nrf_ble_gatt_init(&m_gatt, NULL);
APP_ERROR_CHECK(err_code);
}
static void sleep_mode_enter(void)
{
ret_code_t err_code;
err_code = bsp_indication_set(BSP_INDICATE_IDLE);
APP_ERROR_CHECK(err_code);
err_code = bsp_btn_ble_sleep_mode_prepare();
APP_ERROR_CHECK(err_code);
err_code = sd_power_system_off();
APP_ERROR_CHECK(err_code);
}
static void on_adv_evt(ble_adv_evt_t ble_adv_evt)
{
ret_code_t err_code;
switch (ble_adv_evt)
{
case BLE_ADV_EVT_FAST:
NRF_LOG_INFO("Fast advertising.");
err_code = bsp_indication_set(BSP_INDICATE_ADVERTISING);
APP_ERROR_CHECK(err_code);
break; // BLE_ADV_EVT_FAST
case BLE_ADV_EVT_IDLE:
sleep_mode_enter();
break; // BLE_ADV_EVT_IDLE
default:
break;
}
}
static void delete_bonds(void)
{
ret_code_t err_code;
NRF_LOG_INFO("Erase bonds!");
err_code = pm_peers_delete();
APP_ERROR_CHECK(err_code);
}
static void advertising_init(void)
{
uint32_t err_code;
ble_advdata_t advdata;
ble_advdata_t scandata;
uint8_t flags = BLE_GAP_ADV_FLAG_BR_EDR_NOT_SUPPORTED;
ble_advdata_manuf_data_t manuf_specific_data;
manuf_specific_data.company_identifier = APP_COMPANY_IDENTIFIER;
#if defined(USE_UICR_FOR_MAJ_MIN_VALUES)
uint16_t major_value = ((*(uint32_t *)UICR_ADDRESS) & 0xFFFF0000) >> 16;
uint16_t minor_value = ((*(uint32_t *)UICR_ADDRESS) & 0x0000FFFF);
uint8_t index = MAJ_VAL_OFFSET_IN_BEACON_INFO;
m_beacon_info[index++] = MSB_16(major_value);
m_beacon_info[index++] = LSB_16(major_value);
m_beacon_info[index++] = MSB_16(minor_value);
m_beacon_info[index++] = LSB_16(minor_value);
#endif
manuf_specific_data.data.p_data = (uint8_t *) m_beacon_info;
manuf_specific_data.data.size = APP_BEACON_INFO_LENGTH;
memset(&advdata, 0, sizeof(advdata));
advdata.name_type = BLE_ADVDATA_NO_NAME;
advdata.flags = flags;
advdata.p_manuf_specific_data = &manuf_specific_data;
memset(&m_adv_params, 0, sizeof(m_adv_params));
m_adv_params.properties.type = BLE_GAP_ADV_TYPE_CONNECTABLE_SCANNABLE_UNDIRECTED;
m_adv_params.p_peer_addr = NULL;
m_adv_params.filter_policy = BLE_GAP_ADV_FP_ANY;
m_adv_params.interval = NON_CONNECTABLE_ADV_INTERVAL;
m_adv_params.duration = 0;
err_code = ble_advdata_encode(&advdata, m_adv_data.adv_data.p_data, &m_adv_data.adv_data.len);
APP_ERROR_CHECK(err_code);
memset(&scandata, 0, sizeof(scandata));
scandata.name_type = BLE_ADVDATA_FULL_NAME;
scandata.uuids_complete.uuid_cnt = sizeof(m_adv_uuids) / sizeof(m_adv_uuids[0]);
scandata.uuids_complete.p_uuids = m_adv_uuids;
err_code = ble_advdata_encode(&scandata, m_adv_data.scan_rsp_data.p_data, &m_adv_data.scan_rsp_data.len);
APP_ERROR_CHECK(err_code);
err_code = sd_ble_gap_adv_set_configure(&m_adv_handle, &m_adv_data, &m_adv_params);
APP_ERROR_CHECK(err_code);
}
/**
* @brief Uses the RNG to write a 12-byte nonce to a buffer
* @details The 12 bytes will be written to the buffer starting at index 4 to leave
* space for the 4-byte counter value.
*
* @param[in] p_buf An array of length 16
*/
void nonce_generate(uint8_t * p_buf)
{
uint8_t i = COUNTER_BYTE_LEN;
uint8_t remaining = NONCE_RAND_BYTE_LEN;
// The random number pool may not contain enough bytes at the moment so
// a busy wait may be necessary.
while(0 != remaining)
{
uint32_t err_code;
uint8_t available = 0;
err_code = sd_rand_application_bytes_available_get(&available);
APP_ERROR_CHECK(err_code);
available = ((available > remaining) ? remaining : available);
if (0 != available)
{
err_code = sd_rand_application_vector_get((p_buf + i), available);
APP_ERROR_CHECK(err_code);
i += available;
remaining -= available;
}
if (0 != remaining)
{
nrf_delay_us(RNG_BYTE_WAIT_US * remaining);
}
}
}
static bool m_initialized = false;
// NOTE: The ECB data must be located in RAM or a HardFault will be triggered.
static nrf_ecb_hal_data_t m_ecb_data;
/**
* @brief Initializes the module with the given nonce and key
* @details The nonce will be copied to an internal buffer so it does not need to
* be retained after the function returns. Additionally, a 32-bit counter
* will be initialized to zero and placed into the least-significant 4 bytes
* of the internal buffer. The nonce value should be generated in a
* reasonable manner (e.g. using this module's nonce_generate function).
*
* @param[in] p_nonce An array of length 16 containing 12 random bytes
* starting at index 4
* @param[in] p_ecb_key An array of length 16 containing the ECB key
*/
void ctr_init(const uint8_t * p_nonce, const uint8_t * p_ecb_key)
{
m_initialized = true;
// Save the key.
memcpy(&m_ecb_data.key[0], p_ecb_key, ECB_KEY_LEN);
// Copy the nonce.
memcpy(&m_ecb_data.cleartext[COUNTER_BYTE_LEN],
&p_nonce[COUNTER_BYTE_LEN],
NONCE_RAND_BYTE_LEN);
// Zero the counter value.
memset(&m_ecb_data.cleartext[0], 0x00, COUNTER_BYTE_LEN);
}
static uint32_t crypt(uint8_t * buf)
{
uint8_t i;
uint32_t err_code;
if (!m_initialized)
{
return NRF_ERROR_INVALID_STATE;
}
err_code = sd_ecb_block_encrypt(&m_ecb_data);
if (NRF_SUCCESS != err_code)
{
return err_code;
}
for (i=0; i < ECB_KEY_LEN; i++)
{
buf[i] ^= m_ecb_data.ciphertext[i];
}
// Increment the counter.
(*((uint32_t*) m_ecb_data.cleartext))++;
return NRF_SUCCESS;
}
/**
* @brief Encrypts the given buffer in-situ
* @details The encryption step is done separately (using the nonce, counter, and
* key) and then the result from the encryption is XOR'd with the given
* buffer in-situ. The counter will be incremented only if no error occurs.
*
* @param[in] p_clear_text An array of length 16 containing the clear text
*
* @retval NRF_SUCCESS Success
* @retval NRF_ERROR_INVALID_STATE Module has not been initialized
* @retval NRF_ERROR_SOFTDEVICE_NOT_ENABLED SoftDevice is present, but not enabled
*/
uint32_t ctr_encrypt(uint8_t * p_clear_text)
{
return crypt(p_clear_text);
}
static void advertising_start(bool erase_bonds)
{
ret_code_t err_code;
if (erase_bonds == true){
delete_bonds();
}
else
{
err_code = sd_ble_gap_adv_start(m_adv_handle, APP_BLE_CONN_CFG_TAG);
APP_ERROR_CHECK(err_code);
err_code = bsp_indication_set(BSP_INDICATE_ADVERTISING);
APP_ERROR_CHECK(err_code);
}
}
///**@brief Function for initializing the Advertising functionality.
// *
// * @details Encodes the required advertising data and passes it to the stack.
// * Also builds a structure to be passed to the stack when starting advertising.
// */
//static void advertising_init(void)
//{
// ret_code_t err_code;
// ble_advertising_init_t init;
//
// memset(&init, 0, sizeof(init));
//
// init.advdata.name_type = BLE_ADVDATA_FULL_NAME;
// init.advdata.include_appearance = true;
// init.advdata.flags = BLE_GAP_ADV_FLAGS_LE_ONLY_LIMITED_DISC_MODE;
// init.advdata.uuids_complete.uuid_cnt = sizeof(m_adv_uuids) / sizeof(m_adv_uuids[0]);
// init.advdata.uuids_complete.p_uuids = m_adv_uuids;
//
// init.config.ble_adv_fast_enabled = true;
// init.config.ble_adv_fast_interval = APP_ADV_INTERVAL;
// init.config.ble_adv_fast_timeout = APP_ADV_DURATION;
//
// init.evt_handler = on_adv_evt;
//
// err_code = ble_advertising_init(&m_advertising, &init);
// APP_ERROR_CHECK(err_code);
//
// ble_advertising_conn_cfg_tag_set(&m_advertising, APP_BLE_CONN_CFG_TAG);
//}
static void nrf_qwr_error_handler(uint32_t nrf_error)
{
APP_ERROR_HANDLER(nrf_error);
}
static void qwr_init(void)
{
ret_code_t err_code;
nrf_ble_qwr_init_t qwr_init_obj = {0};
qwr_init_obj.error_handler = nrf_qwr_error_handler;
err_code = nrf_ble_qwr_init(&m_qwr, &qwr_init_obj);
APP_ERROR_CHECK(err_code);
}
static void tps_init(void)
{
ret_code_t err_code;
ble_tps_init_t tps_init_obj;
memset(&tps_init_obj, 0, sizeof(tps_init_obj));
tps_init_obj.initial_tx_power_level = TX_POWER_LEVEL;
tps_init_obj.tpl_rd_sec = SEC_JUST_WORKS;
err_code = ble_tps_init(&m_tps, &tps_init_obj);
APP_ERROR_CHECK(err_code);
}
static void ias_init(void)
{
ret_code_t err_code;
ble_ias_init_t ias_init_obj;
memset(&ias_init_obj, 0, sizeof(ias_init_obj));
ias_init_obj.evt_handler = on_ias_evt;
ias_init_obj.alert_wr_sec = SEC_JUST_WORKS;
err_code = ble_ias_init(&m_ias, &ias_init_obj);
APP_ERROR_CHECK(err_code);
}
static void lls_init(void)
{
ret_code_t err_code;
ble_lls_init_t lls_init_obj;
// Initialize Link Loss Service
memset(&lls_init_obj, 0, sizeof(lls_init_obj));
lls_init_obj.evt_handler = on_lls_evt;
lls_init_obj.error_handler = service_error_handler;
lls_init_obj.initial_alert_level = INITIAL_LLS_ALERT_LEVEL;
lls_init_obj.alert_level_rd_sec = SEC_JUST_WORKS;
lls_init_obj.alert_level_wr_sec = SEC_JUST_WORKS;
err_code = ble_lls_init(&m_lls, &lls_init_obj);
APP_ERROR_CHECK(err_code);
}
static void bas_init(void)
{
ret_code_t err_code;
ble_bas_init_t bas_init_obj;
memset(&bas_init_obj, 0, sizeof(bas_init_obj));
bas_init_obj.evt_handler = on_bas_evt;
bas_init_obj.support_notification = true;
bas_init_obj.p_report_ref = NULL;
bas_init_obj.initial_batt_level = 100;
bas_init_obj.bl_rd_sec = SEC_OPEN;
bas_init_obj.bl_cccd_wr_sec = SEC_OPEN;
bas_init_obj.bl_report_rd_sec = SEC_OPEN;
err_code = ble_bas_init(&m_bas, &bas_init_obj);
APP_ERROR_CHECK(err_code);
}
static void ias_client_init(void)
{
ret_code_t err_code;
ble_ias_c_init_t ias_c_init_obj;
memset(&ias_c_init_obj, 0, sizeof(ias_c_init_obj));
m_is_high_alert_signalled = false;
ias_c_init_obj.evt_handler = on_ias_c_evt;
ias_c_init_obj.error_handler = service_error_handler;
err_code = ble_ias_c_init(&m_ias_c, &ias_c_init_obj);
APP_ERROR_CHECK(err_code);
}
static void services_init(void)
{
qwr_init();
tps_init();
ias_init();
lls_init();
bas_init();
ias_client_init();
}
static void db_discovery_init(void)
{
ret_code_t err_code = ble_db_discovery_init(db_disc_handler);
APP_ERROR_CHECK(err_code);
}
static void conn_params_error_handler(uint32_t nrf_error)
{
APP_ERROR_HANDLER(nrf_error);
}
static void conn_params_init(void)
{
ret_code_t err_code;
ble_conn_params_init_t cp_init;
memset(&cp_init, 0, sizeof(cp_init));
cp_init.p_conn_params = NULL;
cp_init.first_conn_params_update_delay = FIRST_CONN_PARAMS_UPDATE_DELAY;
cp_init.next_conn_params_update_delay = NEXT_CONN_PARAMS_UPDATE_DELAY;
cp_init.max_conn_params_update_count = MAX_CONN_PARAMS_UPDATE_COUNT;
cp_init.start_on_notify_cccd_handle = BLE_GATT_HANDLE_INVALID;
cp_init.disconnect_on_fail = true;
cp_init.evt_handler = NULL;
cp_init.error_handler = conn_params_error_handler;
err_code = ble_conn_params_init(&cp_init);
APP_ERROR_CHECK(err_code);
}
static void alert_signal(uint8_t alert_level)
{
ret_code_t err_code;
switch (alert_level)
{
case BLE_CHAR_ALERT_LEVEL_NO_ALERT:
NRF_LOG_INFO("No Alert.");
err_code = bsp_indication_set(BSP_INDICATE_ALERT_OFF);
APP_ERROR_CHECK(err_code);
break; // BLE_CHAR_ALERT_LEVEL_NO_ALERT
case BLE_CHAR_ALERT_LEVEL_MILD_ALERT:
NRF_LOG_INFO("Mild Alert.");
err_code = bsp_indication_set(BSP_INDICATE_ALERT_0);
APP_ERROR_CHECK(err_code);
break; // BLE_CHAR_ALERT_LEVEL_MILD_ALERT
case BLE_CHAR_ALERT_LEVEL_HIGH_ALERT:
NRF_LOG_INFO("HIGH Alert.");
err_code = bsp_indication_set(BSP_INDICATE_ALERT_3);
APP_ERROR_CHECK(err_code);
break; // BLE_CHAR_ALERT_LEVEL_HIGH_ALERT
default:
break;
}
}
static void on_ias_evt(ble_ias_t * p_ias, ble_ias_evt_t * p_evt)
{
switch (p_evt->evt_type)
{
case BLE_IAS_EVT_ALERT_LEVEL_UPDATED:
if (p_evt->p_link_ctx != NULL)
{
alert_signal(p_evt->p_link_ctx->alert_level);
}
break; // BLE_IAS_EVT_ALERT_LEVEL_UPDATED
default:
// No implementation needed.
break;
}
}
static void on_lls_evt(ble_lls_t * p_lls, ble_lls_evt_t * p_evt)
{
switch (p_evt->evt_type)
{
case BLE_LLS_EVT_LINK_LOSS_ALERT:
alert_signal(p_evt->params.alert_level);
break; // BLE_LLS_EVT_LINK_LOSS_ALERT
default:
// No implementation needed.
break;
}
}
static void on_ias_c_evt(ble_ias_c_t * p_ias_c, ble_ias_c_evt_t * p_evt)
{
ret_code_t err_code;
switch (p_evt->evt_type)
{
case BLE_IAS_C_EVT_DISCOVERY_COMPLETE:
// IAS is found on peer. The Find Me Locator functionality of this app will work.
err_code = ble_ias_c_handles_assign(&m_ias_c,
p_evt->conn_handle,
p_evt->alert_level.handle_value);
APP_ERROR_CHECK(err_code);
m_is_ias_present = true;
break; // BLE_IAS_C_EVT_DISCOVERY_COMPLETE
case BLE_IAS_C_EVT_DISCOVERY_FAILED:
// IAS is not found on peer. The Find Me Locator functionality of this app will NOT work.
break; // BLE_IAS_C_EVT_DISCOVERY_FAILED
case BLE_IAS_C_EVT_DISCONN_COMPLETE:
// Disable alert buttons
m_is_ias_present = false;
break; // BLE_IAS_C_EVT_DISCONN_COMPLETE
default:
break;
}
}
static void on_bas_evt(ble_bas_t * p_bas, ble_bas_evt_t * p_evt)
{
ret_code_t err_code;
switch (p_evt->evt_type)
{
case BLE_BAS_EVT_NOTIFICATION_ENABLED:
// Start battery timer
err_code = app_timer_start(m_battery_timer_id, BATTERY_LEVEL_MEAS_INTERVAL, NULL);
APP_ERROR_CHECK(err_code);
break; // BLE_BAS_EVT_NOTIFICATION_ENABLED
case BLE_BAS_EVT_NOTIFICATION_DISABLED:
err_code = app_timer_stop(m_battery_timer_id);
APP_ERROR_CHECK(err_code);
break; // BLE_BAS_EVT_NOTIFICATION_DISABLED
default:
// No implementation needed.
break;
}
}
static void ble_evt_handler(ble_evt_t const * p_ble_evt, void * p_context)
{
ret_code_t err_code = NRF_SUCCESS;
switch (p_ble_evt->header.evt_id)
{
case BLE_GAP_EVT_DISCONNECTED:
NRF_LOG_INFO("Disconnected.");
// LED indication will be changed when advertising starts.
break;
case BLE_GAP_EVT_CONNECTED:
{
NRF_LOG_INFO("Connected.");
err_code = bsp_indication_set(BSP_INDICATE_CONNECTED);
APP_ERROR_CHECK(err_code);
// Assign connection handle to the Queued Write module.
err_code = nrf_ble_qwr_conn_handle_assign(&m_qwr, p_ble_evt->evt.gap_evt.conn_handle);
APP_ERROR_CHECK(err_code);
// Discover peer's services.
err_code = ble_db_discovery_start(&m_ble_db_discovery,
p_ble_evt->evt.gap_evt.conn_handle);
APP_ERROR_CHECK(err_code);
} break;
case BLE_GAP_EVT_PHY_UPDATE_REQUEST:
{
NRF_LOG_DEBUG("PHY update request.");
ble_gap_phys_t const phys =
{
.rx_phys = BLE_GAP_PHY_AUTO,
.tx_phys = BLE_GAP_PHY_AUTO,
};
err_code = sd_ble_gap_phy_update(p_ble_evt->evt.gap_evt.conn_handle, &phys);
APP_ERROR_CHECK(err_code);
} break;
case BLE_GATTC_EVT_TIMEOUT:
// Disconnect on GATT Client timeout event.
NRF_LOG_DEBUG("GATT Client Timeout.");
err_code = sd_ble_gap_disconnect(p_ble_evt->evt.gattc_evt.conn_handle,
BLE_HCI_REMOTE_USER_TERMINATED_CONNECTION);
APP_ERROR_CHECK(err_code);
break;
case BLE_GATTS_EVT_TIMEOUT:
// Disconnect on GATT Server timeout event.
NRF_LOG_DEBUG("GATT Server Timeout.");
err_code = sd_ble_gap_disconnect(p_ble_evt->evt.gatts_evt.conn_handle,
BLE_HCI_REMOTE_USER_TERMINATED_CONNECTION);
APP_ERROR_CHECK(err_code);
break;
default:
// No implementation needed.
break;
}
}
static void ble_stack_init(void)
{
ret_code_t err_code;
err_code = nrf_sdh_enable_request();
APP_ERROR_CHECK(err_code);
// Configure the BLE stack using the default settings.
// Fetch the start address of the application RAM.
uint32_t ram_start = 0;
err_code = nrf_sdh_ble_default_cfg_set(APP_BLE_CONN_CFG_TAG, &ram_start);
APP_ERROR_CHECK(err_code);
// Enable BLE stack.
err_code = nrf_sdh_ble_enable(&ram_start);
APP_ERROR_CHECK(err_code);
// Register a handler for BLE events.
NRF_SDH_BLE_OBSERVER(m_ble_observer, APP_BLE_OBSERVER_PRIO, ble_evt_handler, NULL);
}
static void peer_manager_init(void)
{
ble_gap_sec_params_t sec_param;
ret_code_t err_code;
err_code = pm_init();
APP_ERROR_CHECK(err_code);
memset(&sec_param, 0, sizeof(ble_gap_sec_params_t));
// Security parameters to be used for all security procedures.
sec_param.bond = SEC_PARAM_BOND;
sec_param.mitm = SEC_PARAM_MITM;
sec_param.lesc = SEC_PARAM_LESC;
sec_param.keypress = SEC_PARAM_KEYPRESS;
sec_param.io_caps = SEC_PARAM_IO_CAPABILITIES;
sec_param.oob = SEC_PARAM_OOB;
sec_param.min_key_size = SEC_PARAM_MIN_KEY_SIZE;
sec_param.max_key_size = SEC_PARAM_MAX_KEY_SIZE;
sec_param.kdist_own.enc = 1;
sec_param.kdist_own.id = 1;
sec_param.kdist_peer.enc = 1;
sec_param.kdist_peer.id = 1;
err_code = pm_sec_params_set(&sec_param);
APP_ERROR_CHECK(err_code);
err_code = pm_register(pm_evt_handler);
APP_ERROR_CHECK(err_code);
}
static void bsp_event_handler(bsp_event_t event)
{
ret_code_t err_code;
switch (event)
{
case BSP_EVENT_SLEEP:
sleep_mode_enter();
break;
case BSP_EVENT_DISCONNECT:
err_code = sd_ble_gap_disconnect(m_ias_c.conn_handle,
BLE_HCI_REMOTE_USER_TERMINATED_CONNECTION);
if (err_code != NRF_ERROR_INVALID_STATE)
{
APP_ERROR_CHECK(err_code);
}
break;
case BSP_EVENT_KEY_0:
{
if (m_is_ias_present)
{
if (!m_is_high_alert_signalled)
{
err_code =
ble_ias_c_send_alert_level(&m_ias_c, BLE_CHAR_ALERT_LEVEL_HIGH_ALERT);
}
else
{
err_code = ble_ias_c_send_alert_level(&m_ias_c, BLE_CHAR_ALERT_LEVEL_NO_ALERT);
}
if (err_code == NRF_SUCCESS)
{
m_is_high_alert_signalled = !m_is_high_alert_signalled;
}
else if (
(err_code != NRF_ERROR_RESOURCES)
&&
(err_code != BLE_ERROR_GATTS_SYS_ATTR_MISSING)
&&
(err_code != NRF_ERROR_NOT_FOUND)
)
{
APP_ERROR_HANDLER(err_code);
}
}
} break;
case BSP_EVENT_KEY_1:
NRF_LOG_INFO("Alert Off.");
err_code = bsp_indication_set(BSP_INDICATE_ALERT_OFF);
APP_ERROR_CHECK(err_code);
break;
default:
break;
}
}
static void buttons_leds_init(bool * p_erase_bonds)
{
ret_code_t err_code;
bsp_event_t startup_event;
err_code = bsp_init(BSP_INIT_LEDS | BSP_INIT_BUTTONS, bsp_event_handler);
APP_ERROR_CHECK(err_code);
err_code = bsp_btn_ble_init(NULL, &startup_event);
APP_ERROR_CHECK(err_code);
*p_erase_bonds = (startup_event == BSP_EVENT_CLEAR_BONDING_DATA);
}
static void log_init(void)
{
ret_code_t err_code = NRF_LOG_INIT(NULL);
APP_ERROR_CHECK(err_code);
NRF_LOG_DEFAULT_BACKENDS_INIT();
}
static void power_management_init(void)
{
ret_code_t err_code;
err_code = nrf_pwr_mgmt_init();
APP_ERROR_CHECK(err_code);
}
static void idle_state_handle(void)
{
if (NRF_LOG_PROCESS() == false)
{
nrf_pwr_mgmt_run();
}
}
///**@brief Function for starting advertising.
// */
//static void advertising_start(bool erase_bonds)
//{
// if (erase_bonds == true){
// delete_bonds();
// // Advertising is started by PM_EVT_PEERS_DELETE_SUCEEDED event.
// }
// else
// {
// uint32_t err_code = ble_advertising_start(&m_advertising, BLE_ADV_MODE_FAST);
//
// APP_ERROR_CHECK(err_code);
// }
//}
static void tx_power_set(void)
{
ret_code_t err_code = sd_ble_gap_tx_power_set(BLE_GAP_TX_POWER_ROLE_ADV, m_advertising.adv_handle, TX_POWER_LEVEL);
APP_ERROR_CHECK(err_code);
}
int main(void)
{
bool erase_bonds;
// Initialize.
log_init();
timers_init();
buttons_leds_init(&erase_bonds);
power_management_init();
ble_stack_init();
adc_configure();
gap_params_init();
gatt_init();
advertising_init();
db_discovery_init();
services_init();
conn_params_init();
peer_manager_init();
// Start execution.
NRF_LOG_INFO("Proximity example started.");
advertising_start(erase_bonds);
tx_power_set();
// Enter main loop.
for (;;)
{
idle_state_handle();
}
}
i had added the code but it is not encrypting
Naralasetty Praneeth: You are not calling the ctr_init, the nonce_generate or the ctr_encrypt functions, so its no wonder that you're not encrypting anything.
You need to create a ECB key, you can use a generator like this one to do that. Then you need do generate the nounce with the nonce_generate function, provide the nounce and the ecb key to the ctr_init function and then call crypt on the data you want to encrypt.
Best regards
Bjørn