Class EchoCommand

Namespace

Yubico.YubiKey.U2f.Commands

Assembly

Yubico.YubiKey.dll

Sends data to the YubiKey which immediately echoes the same data back.

public sealed class EchoCommand : IYubiKeyCommand<EchoResponse>

Inheritance

object

EchoCommand

Implements

IYubiKeyCommand<EchoResponse>

Remarks

This command is defined to be a uniform function for debugging, latency, and performance measurements.

Behavior for Data larger than 1024 bytes is undefined.

Constructors

EchoCommand()

Constructs an instance of the EchoCommand class.

public EchoCommand()

EchoCommand(ReadOnlyMemory<byte>)

Constructs an instance of the EchoCommand class with the data to send to the YubiKey.

public EchoCommand(ReadOnlyMemory<byte> data)

Parameters

data ReadOnlyMemory<byte>

The data to send to the YubiKey. See Data.

Properties

Application

The YubiKeyApplication to which this command belongs.

public YubiKeyApplication Application { get; }

Property Value

YubiKeyApplication

FidoU2f

Data

The data to send to the YubiKey.

public ReadOnlyMemory<byte> Data { get; set; }

Property Value

ReadOnlyMemory<byte>

Remarks

Behavior for Data larger than 1024 bytes is undefined.

Methods

CreateCommandApdu()

Creates a well-formed CommandApdu to send to the YubiKey.

public CommandApdu CreateCommandApdu()

Returns

CommandApdu

A valid CommandApdu that is ready to be sent to the YubiKey, or passed along to additional encoders for further processing.

Remarks

This method will first perform validation on all of the parameters and data provided to it. The CommandAPDU it creates should contain all of the data payload for the command, even if it exceeds 65,535 bytes as specified by the ISO 7816-4 specification. The APDU will be properly chained by the device connection prior to being sent to the YubiKey, and the responses will collapsed into a single result.

CreateResponseForApdu(ResponseApdu)

Creates the corresponding IYubiKeyResponse implementation for the current command.

public EchoResponse CreateResponseForApdu(ResponseApdu responseApdu)

Parameters

responseApdu ResponseApdu

The ResponseApdu returned by the YubiKey.

Returns

EchoResponse

The implementation of IYubiKeyResponse that parses and presents ths response APDU.