VerifyUvResponse Class

Namespace: Yubico.YubiKey.Piv.Commands Assembly: Yubico.YubiKey.dll

The response to biometric verification.

C#

public sealed class VerifyUvResponse : PivResponse, IYubiKeyResponseWithData<ReadOnlyMemory<byte>>, IYubiKeyResponse

Inheritance System.Object YubiKeyResponse PivResponse VerifyUvResponse

Implements

IYubiKeyResponseWithData<System.ReadOnlyMemory<System.Byte>>

IYubiKeyResponse

Remarks

This is the partner Response class to VerifyUvCommand.

To determine the result of the command, first look at the Status. If Status is not one of the following values then an error has occurred and GetData() will throw an exception.

Status	Description
Success	The biometric authentication succeeded. GetData returns the temporary pin if requested.
AuthenticationRequired	The biometric authentication failed. GetData returns null. AttemptsRemaining returns the number of retries remaining. If the number of retries is 0, the biometric authentication is blocked and the client should authenticate with the PIV PIN via VerifyPinCommand.

Example:

  IYubiKeyConnection connection = key.Connect(YubiKeyApplication.Piv);

  var command = new VerifyUvCommand(false, false);
  VerifyUvResponse response = connection.SendCommand(command);

  if (response.Status == ResponseStatus.AuthenticationRequired)
  {
    int retryCount = response.AttemptsRemaining;
    /* report the retry count */
  }
  else if (response.Status != ResponseStatus.Success)
  {
    /* handle error */
  }

Constructors

Name	Description
VerifyUvResponse(ResponseApdu, Boolean)	Constructs a VerifyUvResponse based on a ResponseApdu received from the YubiKey.

Properties

Name	Description
AttemptsRemaining	Indicates how many biometric match retries are left (biometric match retry counter) until a biometric verification is blocked.
StatusCodeMap

Methods

Name	Description
GetData()	Gets the temporary PIN if requested.