private resolvable address and IRK generation

Question

i need to generate an irk from nrf52 so that no device can identify that nrf52 data...only the device with same irk can identify and connect to it 
 for that what should i do? 
 Thank you

Kenneth · Accepted Answer

After bonding is complete, then the irk can be fetched by calling pm_whitelist_get(). For instance look at the hid keyboard examples: 
 case BLE_ADV_EVT_WHITELIST_REQUEST:
 {
 ble_gap_addr_t whitelist_addrs[BLE_GAP_WHITELIST_ADDR_MAX_COUNT];
 ble_gap_irk_t whitelist_irks[BLE_GAP_WHITELIST_ADDR_MAX_COUNT];
 uint32_t addr_cnt = BLE_GAP_WHITELIST_ADDR_MAX_COUNT;
 uint32_t irk_cnt = BLE_GAP_WHITELIST_ADDR_MAX_COUNT;

 err_code = pm_whitelist_get(whitelist_addrs, &addr_cnt,
 whitelist_irks, &irk_cnt);
 APP_ERROR_CHECK(err_code);
 NRF_LOG_DEBUG("pm_whitelist_get returns %d addr in whitelist and %d irk whitelist",
 addr_cnt, irk_cnt);

 // Apply the whitelist.
 err_code = ble_advertising_whitelist_reply(&m_advertising,
 whitelist_addrs,
 addr_cnt,
 whitelist_irks,
 irk_cnt);
 APP_ERROR_CHECK(err_code);
 } break; //BLE_ADV_EVT_WHITELIST_REQUEST 
 Best regards, Kenneth

private resolvable address and IRK generation

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