Ble pairing with authentication

[ShubMane]

1. I had done the pairing without any authentication but now I want to do it with the authentication with an authentication key.

2. please provide some sample code regarding the pairing authentication and its process.

[Amanda Hsieh]

Hi, 

Are you using NCS or nRF5SDK?

-Amanda

[ShubMane]

Hi team,

I am using the nRF52DK module PCA10040 board

[Amanda Hsieh]

Hi, 

We don't have the example with the username, and the BLE pairing and bonding only provide the authentication with the key. 

Please see Bluetooth Core Specification, Ch.5 SECURITY OVERVIEW:

The Bluetooth security model includes five distinct security features: pairing, bonding, device authentication, encryption, and message integrity.
• Pairing: the process for creating one or more shared secret keys
• Bonding: the act of storing the keys created during pairing for use in subsequent connections in order to form a trusted device pair
• Device authentication: verification that the two devices have the same keys
• Encryption: message confidentiality
• Message integrity: protects against message forgeries

-Amanda

[ShubMane]

Hi Amanda,

I just wanted to send the string type (normally just like we printed on the console )data as well as data from the user. from master to the slave.

[Amanda Hsieh]

You can take a look at this UART/Serial Port Emulation over BLE.

-Amanda

[ShubMane]

Respected Amanda,

I had one more doute and that is 

1. Once the data was received from the nrf_connect app(master) to PCA10040(nrf52832). I want to store that data into the variable 

2. and Once the data is received data is stored in the variable after that I want to perform the accordingly.

3. is there is any example based on above situation in the sdk.

[Amanda Hsieh]

Hi, 

You can take a look at this UART/Serial Port Emulation over BLE. The Receive data is p_evt->params.rx_data.p_data. 

-Amanda

[ShubMane]

Hi, Amanda,

need some help,

I want to wait till the new data has not been received from the (p_evt->params.rx_data.p_data.) from the nrf connect app.

could u please tell me how its done

and I am storing that new data in the array.

would u please tell me how its been done.

depends on I want to write logic 

[ShubMane]

Hi, Amanda,

need some help,

I want to wait till the new data has been received from the (p_evt->params.rx_data.p_data.) from the nrf connect app.

could u please tell me how it is done

and I am storing that new data in the array

would u please tell me how it's been done?

depends on I want to write logic.

[ShubMane]

and once the data has received then I want to out of that wait state

[ShubMane]

static void nus_data_handler(ble_nus_evt_t * p_evt)
{
    int attempt = 0;
    char arr[6];
    char arr_1[6];
    
    bool flag = 0;
    
    if (p_evt->type == BLE_NUS_EVT_RX_DATA)
    {
        uint32_t err_code;

        NRF_LOG_DEBUG("Received data from BLE NUS. Writing data on UART.");
        NRF_LOG_HEXDUMP_DEBUG(p_evt->params.rx_data.p_data, p_evt->params.rx_data.length);

        for (uint32_t i = 0; i < p_evt->params.rx_data.length; i++)
        {
            do
            {
                err_code = app_uart_put(p_evt->params.rx_data.p_data[i]);

                if ((err_code != NRF_SUCCESS) && (err_code != NRF_ERROR_BUSY))
                {
                    NRF_LOG_ERROR("Failed receiving NUS message. Error 0x%x. ", err_code);
                    APP_ERROR_CHECK(err_code);
                }
            }while (err_code == NRF_ERROR_BUSY);
        }
        if(p_evt->params.rx_data.p_data[p_evt->params.rx_data.length - 1] == '\r')
        {
            while (app_uart_put('\n') == NRF_ERROR_BUSY);
        }

        //storing the data into array which is comming from the ble_master(nrf_connect app)
        for(int i=0; i<=5; i++)
        {
          arr[i] = p_evt->params.rx_data.p_data[i];
        }

        if(strcmp(arr, "123456") == 0)
        {
          printf("\nPassword is correct");
        }

        if(strcmp(arr, "123456") != 0)
        {
          printf("\nPassword is incorrect!!! Please try again");
          printf("\nPassword : ");

          //strcpy(arr_1, arr);

          if(strcmp(arr, "123456") == 0)
          {
            printf("\nPassword is correct");            
          }

        }    
    }
}

[ShubMane]

static void nus_data_handler(ble_nus_evt_t * p_evt)
{
    int attempt = 0;
    char arr[6];
    char arr_1[6];
    
    bool flag = 0;
    
    if (p_evt->type == BLE_NUS_EVT_RX_DATA)
    {
        uint32_t err_code;

        NRF_LOG_DEBUG("Received data from BLE NUS. Writing data on UART.");
        NRF_LOG_HEXDUMP_DEBUG(p_evt->params.rx_data.p_data, p_evt->params.rx_data.length);

        for (uint32_t i = 0; i < p_evt->params.rx_data.length; i++)
        {
            do
            {
                err_code = app_uart_put(p_evt->params.rx_data.p_data[i]);

                if ((err_code != NRF_SUCCESS) && (err_code != NRF_ERROR_BUSY))
                {
                    NRF_LOG_ERROR("Failed receiving NUS message. Error 0x%x. ", err_code);
                    APP_ERROR_CHECK(err_code);
                }
            }while (err_code == NRF_ERROR_BUSY);
        }
        if(p_evt->params.rx_data.p_data[p_evt->params.rx_data.length - 1] == '\r')
        {
            while (app_uart_put('\n') == NRF_ERROR_BUSY);
        }

        //storing the data into array which is comming from the ble_master(nrf_connect app)
        for(int i=0; i<=5; i++)
        {
          arr[i] = p_evt->params.rx_data.p_data[i];
        }

        if(strcmp(arr, "123456") == 0)
        {
          printf("\nPassword is correct");
        }

        if(strcmp(arr, "123456") != 0)
        {
          printf("\nPassword is incorrect!!! Please try again");
          printf("\nPassword : "); // Here I want to wait till the new data had arrived

          //strcpy(arr_1, arr);

          if(strcmp(arr, "123456") == 0)
          {
            printf("\nPassword is correct");            
          }

        }    
    }
}