private async Task <List <SecondaryAuthenticationFactorInfo> > getConnectedRegisteredDeviceList(IReadOnlyList <SecondaryAuthenticationFactorInfo> devicesToCheck)
{
//byte[] deviceConfigurationDataArray;
string selector = SmartCardReader.GetDeviceSelector();
selector += " AND System.Devices.DeviceInstanceId:~~\"Ledger\"";
byte[] response = { 0 };
string sw1sw2 = null;
string NanosATR = "3b00";
byte[] deviceDlockState = new byte[1];
byte[] deviceIdArray = new byte[16];
List <SecondaryAuthenticationFactorInfo> outList = new List <SecondaryAuthenticationFactorInfo>();
DeviceInformationCollection readers = await DeviceInformation.FindAllAsync(selector);
foreach (SecondaryAuthenticationFactorInfo device in devicesToCheck)
{
//CryptographicBuffer.CopyToByteArray(device.DeviceConfigurationData, out deviceConfigurationDataArray);
foreach (DeviceInformation smartcardreader in readers)
{
SmartCardReader reader = await SmartCardReader.FromIdAsync(smartcardreader.Id);
SmartCardReaderStatus readerstatus = await reader.GetStatusAsync();
IReadOnlyList <SmartCard> cards = await reader.FindAllCardsAsync();
foreach (SmartCard card in cards)
{
try
{
IBuffer ATR = await card.GetAnswerToResetAsync();
string ATR_str = CryptographicBuffer.EncodeToHexString(ATR);
if (ATR_str.Equals(NanosATR))
{
SmartCardConnection connection = await card.ConnectAsync();
response = await Apdu.TransmitApduAsync(connection, Apdu.getDeviceGuidCmdApdu);
sw1sw2 = Apdu.ApduResponseParser(response, out response);
deviceIdArray = response;
string deviceId = BitConverter.ToString(response).Replace("-", "");
if (deviceId == device.DeviceId) //update config data with dLockState and increment counter
{
outList.Add(device);
}
connection.Dispose();
}
}
catch
{
}
}
}
}
return(outList);
}
private async Task AuthenticateWithSmartCardAsync(SmartCard card)
{
var localSettings = Windows.Storage.ApplicationData.Current.LocalSettings;
String m_selectedDeviceId = localSettings.Values["SelectedDevice"] as String;
string m_selectedDeviceFriendlyName = string.Empty;
string m_selectedDeviceAddDate = string.Empty;
string deviceConfigString = string.Empty;
char[] deviceConfigCharArray;
byte[] deviceIdArray = new byte[16];
byte[] deviceDlockState = new byte[1];
bool foundCompanionDevice = false;
byte[] response = { 0 };
string sw1sw2 = null;
SecondaryAuthenticationFactorAuthenticationStageInfo authStageInfo = await SecondaryAuthenticationFactorAuthentication.GetAuthenticationStageInfoAsync();
if ((authStageInfo.Stage != SecondaryAuthenticationFactorAuthenticationStage.CollectingCredential) && (authStageInfo.Stage != SecondaryAuthenticationFactorAuthenticationStage.WaitingForUserConfirmation))
{
throw new Exception("Unexpected! Stage: " + authStageInfo.Stage);
}
//ShowToastNotification("Post Collecting Credential");
System.Diagnostics.Debug.WriteLine("[AuthenticateWithSmartCardAsync] Post Collecting Credential");
IReadOnlyList <SecondaryAuthenticationFactorInfo> deviceList = await SecondaryAuthenticationFactorRegistration.FindAllRegisteredDeviceInfoAsync(
SecondaryAuthenticationFactorDeviceFindScope.AllUsers);
if (deviceList.Count == 0)
{
//ShowToastNotification("Unexpected exception, device list = 0");
throw new Exception("Unexpected exception, device list = 0");
}
SmartCardConnection connection = await card.ConnectAsync();
System.Diagnostics.Debug.WriteLine("[AuthenticateWithSmartCardAsync] Connection");
response = await Apdu.TransmitApduAsync(connection, Apdu.getDeviceGuidCmdApdu);
sw1sw2 = Apdu.ApduResponseParser(response, out response);
deviceIdArray = response;
string deviceId = BitConverter.ToString(response).Replace("-", "");
response = await Apdu.TransmitApduAsync(connection, Apdu.getDlockStateCmdApdu);
sw1sw2 = Apdu.ApduResponseParser(response, out response);
deviceDlockState = response;
//string deviceFriendlyName = null;
byte[] deviceConfigDataArray = new byte[18]; //16 bytes for GUID and 1 byte for dLockstate
IBuffer deviceConfigData;
byte[] deviceConfigurationDataArray;
//List<byte[]> deviceConfigList = new List<byte[]>();
foreach (SecondaryAuthenticationFactorInfo device in deviceList)
{
CryptographicBuffer.CopyToByteArray(device.DeviceConfigurationData, out deviceConfigurationDataArray);
//deviceConfigList.Add(deviceConfigurationDataArray);
//deviceFriendlyName = device.DeviceFriendlyName;
if (device.DeviceId == deviceId)
{
m_selectedDeviceId = deviceId;
m_selectedDeviceFriendlyName = device.DeviceFriendlyName;
deviceConfigString = CryptographicBuffer.ConvertBinaryToString(0, device.DeviceConfigurationData);
//deviceConfigCharArray = new char[deviceConfigString.Count()];
//deviceConfigCharArray = deviceConfigString.ToCharArray();
int count = device.DeviceFriendlyName.Count();
m_selectedDeviceAddDate = deviceConfigString.Substring(35 + 1 + count + 1 + 1);
foundCompanionDevice = true;
//continue;
}
}
//Debugger.Break();
if (!foundCompanionDevice)
{
throw new CompanionDeviceNotFoundException();
}
System.Diagnostics.Debug.WriteLine("[AuthenticateWithSmartCardAsync] Start Nonce APDU sending");
response = await Apdu.TransmitApduAsync(connection, Apdu.getNonceCmdApdu);
sw1sw2 = Apdu.ApduResponseParser(response, out response);
if (sw1sw2 != "9000")
{
throw new UnableTogetNonceFromDeviceException();
}
System.Diagnostics.Debug.WriteLine("[AuthenticateWithSmartCardAsync] Nonce APDU recieved without error");
string nonce = BitConverter.ToString(response).Replace("-", "");
IBuffer svcNonce = CryptographicBuffer.DecodeFromHexString(nonce);
System.Diagnostics.Debug.WriteLine("[AuthenticateWithSmartCardAsync] Start Authentication");
SecondaryAuthenticationFactorAuthenticationResult authResult = await SecondaryAuthenticationFactorAuthentication.StartAuthenticationAsync(
m_selectedDeviceId, svcNonce);
if (authResult.Status != SecondaryAuthenticationFactorAuthenticationStatus.Started)
{
//ShowToastNotification("Unexpected! Could not start authentication!");
throw new Exception("Unexpected! Could not start authentication! Status: " + authResult.Status);
}
byte[] devNonce = { 0 };
byte[] svcHmac = { 0 };
byte[] sessNonce = { 0 };
CryptographicBuffer.CopyToByteArray(authResult.Authentication.ServiceAuthenticationHmac, out svcHmac);
CryptographicBuffer.CopyToByteArray(authResult.Authentication.SessionNonce, out sessNonce);
CryptographicBuffer.CopyToByteArray(authResult.Authentication.DeviceNonce, out devNonce);
byte[] cmd = new byte[Apdu.challengeCmdApdu.Length + svcHmac.Length + sessNonce.Length + devNonce.Length];
System.Buffer.BlockCopy(Apdu.challengeCmdApdu, 0, cmd, 0, Apdu.challengeCmdApdu.Length);
System.Buffer.BlockCopy(svcHmac, 0, cmd, Apdu.challengeCmdApdu.Length, svcHmac.Length);
System.Buffer.BlockCopy(sessNonce, 0, cmd, Apdu.challengeCmdApdu.Length + svcHmac.Length, sessNonce.Length);
System.Buffer.BlockCopy(devNonce, 0, cmd, Apdu.challengeCmdApdu.Length + svcHmac.Length + sessNonce.Length, devNonce.Length);
System.Diagnostics.Debug.WriteLine("[AuthenticateWithSmartCardAsync] Send Challenge");
string str = "\"" + m_selectedDeviceFriendlyName + "\"";
await SecondaryAuthenticationFactorAuthentication.ShowNotificationMessageAsync(
str,
SecondaryAuthenticationFactorAuthenticationMessage.DeviceNeedsAttention);
response = await Apdu.TransmitApduAsync(connection, cmd);
sw1sw2 = Apdu.ApduResponseParser(response, out response);
if (sw1sw2 == "6985")
{
throw new UnauthorizedUserException();
}
else if (sw1sw2 == "6984")
{
//ShowToastNotification("Log-in denied by user");
throw new LogInDeniedByUserException();
}
System.Diagnostics.Debug.WriteLine("[AuthenticateWithSmartCardAsync] Response recieved");
byte[] HMACdk = new byte[32];
byte[] HMACsk = new byte[32];
System.Buffer.BlockCopy(response, 0, HMACdk, 0, 32);
System.Buffer.BlockCopy(response, 32, HMACsk, 0, 32);
IBuffer deviceHmac = CryptographicBuffer.CreateFromByteArray(HMACdk);
IBuffer sessionHmac = CryptographicBuffer.CreateFromByteArray(HMACsk);
SecondaryAuthenticationFactorFinishAuthenticationStatus authStatus = await authResult.Authentication.FinishAuthenticationAsync(deviceHmac,
sessionHmac);
if (authStatus != SecondaryAuthenticationFactorFinishAuthenticationStatus.Completed)
{
//ShowToastNotification("Unable to complete authentication!");
System.Diagnostics.Debug.WriteLine("[AuthenticateWithSmartCardAsync] Unable to complete authentication");
throw new Exception("Unable to complete authentication!");
}
deviceConfigString = "";
if (deviceDlockState[0] == 0)
{
deviceConfigString = deviceId + "-0-1-" + m_selectedDeviceFriendlyName + "-" + m_selectedDeviceAddDate;
}
else
{
deviceConfigString = deviceId + "-1-1-" + m_selectedDeviceFriendlyName + "-" + m_selectedDeviceAddDate;
}
deviceConfigCharArray = new char[deviceConfigString.Count()];
deviceConfigString.CopyTo(0, deviceConfigCharArray, 0, deviceConfigString.Count()); // because deviceConfigString is readonly
deviceConfigCharArray[35] = '1'; // to indicate that device was not used for last login
string deviceConfigStringNew = new string(deviceConfigCharArray);
//Debugger.Break();
deviceConfigData = CryptographicBuffer.ConvertStringToBinary(deviceConfigStringNew, 0);
await SecondaryAuthenticationFactorRegistration.UpdateDeviceConfigurationDataAsync(deviceId, deviceConfigData); //update deviceConfigData
foreach (SecondaryAuthenticationFactorInfo device in deviceList)
{
if (device.DeviceId != deviceId)
{
deviceConfigString = CryptographicBuffer.ConvertBinaryToString(0, device.DeviceConfigurationData);
deviceConfigCharArray = new char[deviceConfigString.Count()];
deviceConfigString.CopyTo(0, deviceConfigCharArray, 0, deviceConfigString.Count()); // decause deviceConfigString is readonly
deviceConfigCharArray[35] = '0'; // to indicate that device was not used for last login
deviceConfigStringNew = new string(deviceConfigCharArray);
deviceConfigData = CryptographicBuffer.ConvertStringToBinary(deviceConfigStringNew, 0);
//Debugger.Break();
await SecondaryAuthenticationFactorRegistration.UpdateDeviceConfigurationDataAsync(device.DeviceId, deviceConfigData); //update deviceConfigData
}
}
System.Diagnostics.Debug.WriteLine("[AuthenticateWithSmartCardAsync] Auth completed");
connection.Dispose();
}
private async Task writeConnectedRegisteredDevices()
{
string NanosATR = "3b00";
string selector = SmartCardReader.GetDeviceSelector();
selector += " AND System.Devices.DeviceInstanceId:~~\"Ledger\"";
byte[] response = { 0 };
string sw1sw2 = null;
byte[] deviceDlockState = new byte[1];
byte[] deviceIdArray = new byte[16];
string txt = "";
DeviceInformationCollection readers = await DeviceInformation.FindAllAsync(selector);
IReadOnlyList <SecondaryAuthenticationFactorInfo> RegisteredDeviceList_addEvent = await SecondaryAuthenticationFactorRegistration.FindAllRegisteredDeviceInfoAsync(
SecondaryAuthenticationFactorDeviceFindScope.User);
List <SecondaryAuthenticationFactorInfo> ConnectedRegisteredDeviceList = await getConnectedRegisteredDeviceList(RegisteredDeviceList_addEvent);
foreach (SecondaryAuthenticationFactorInfo device in ConnectedRegisteredDeviceList)
{
foreach (DeviceInformation smartcardreader in readers)
{
SmartCardReader reader = await SmartCardReader.FromIdAsync(smartcardreader.Id);
SmartCardReaderStatus readerstatus = await reader.GetStatusAsync();
IReadOnlyList <SmartCard> cards = await reader.FindAllCardsAsync();
foreach (SmartCard card in cards)
{
try
{
IBuffer ATR = await card.GetAnswerToResetAsync();
string ATR_str = CryptographicBuffer.EncodeToHexString(ATR);
if (ATR_str.Equals(NanosATR))
{
SmartCardConnection connection = await card.ConnectAsync();
response = await Apdu.TransmitApduAsync(connection, Apdu.getDeviceGuidCmdApdu);
sw1sw2 = Apdu.ApduResponseParser(response, out response);
deviceIdArray = response;
string deviceId = BitConverter.ToString(response).Replace("-", "");
if (deviceId == device.DeviceId) //update config data with dLockState
{
if (device.PresenceMonitoringMode != SecondaryAuthenticationFactorDevicePresenceMonitoringMode.AppManaged)
{
// Skip the device which doesn't need to be monitored in the background task
continue;
}
await device.UpdateDevicePresenceAsync(SecondaryAuthenticationFactorDevicePresence.Present);
response = await Apdu.TransmitApduAsync(connection, Apdu.getDlockStateCmdApdu);
sw1sw2 = Apdu.ApduResponseParser(response, out response);
deviceDlockState = response;
string deviceConfigString = CryptographicBuffer.ConvertBinaryToString(0, device.DeviceConfigurationData);
char[] deviceConfigCharArray = new char[deviceConfigString.Count()];
deviceConfigCharArray = deviceConfigString.ToCharArray();
string deviceConfigStringNew = "";
int count = device.DeviceFriendlyName.Count();
if (deviceDlockState[0] == 0)
{
if (deviceConfigCharArray[35] == '0') // Indicates if device was used for last login
{
deviceConfigStringNew = device.DeviceId + "-0-0-" + device.DeviceFriendlyName + "-" + deviceConfigString.Substring(35 + 1 + count + 1 + 1);
}
else
{
deviceConfigStringNew = device.DeviceId + "-0-1-" + device.DeviceFriendlyName + "-" + deviceConfigString.Substring(35 + 1 + count + 1 + 1);
}
}
else
{
if (deviceConfigCharArray[35] == '0')
{
deviceConfigStringNew = device.DeviceId + "-1-0-" + device.DeviceFriendlyName + "-" + deviceConfigString.Substring(35 + 1 + count + 1 + 1);
}
else
{
deviceConfigStringNew = device.DeviceId + "-1-1-" + device.DeviceFriendlyName + "-" + deviceConfigString.Substring(35 + 1 + count + 1 + 1);
}
}
// Get a Ibuffer from combinedDataArray
IBuffer deviceConfigData = CryptographicBuffer.ConvertStringToBinary(deviceConfigString, 0);
await SecondaryAuthenticationFactorRegistration.UpdateDeviceConfigurationDataAsync(device.DeviceId, deviceConfigData);
}
connection.Dispose();
}
}
catch (Exception e)
{
}
}
}
txt += CryptographicBuffer.ConvertBinaryToString(0, device.DeviceConfigurationData) + Environment.NewLine;
}
StorageFolder folder = ApplicationData.Current.LocalFolder;
StorageFile ConnectedRegisteredDeviceListFile = await folder.CreateFileAsync("connectedRegisteredDeviceList.txt", CreationCollisionOption.ReplaceExisting);
await FileIO.WriteTextAsync(ConnectedRegisteredDeviceListFile, txt);
}
