YubiKeyDevice.FindAll() is empty

[nikosft]

Hi, I have Security Key NFC with firmware 5.2.7. It is recognized by the Yubikey Manager and I can use it in Webauthn demo sites. Nevertheless, I cannot make it work with .net sdk. The following trivial .net 5.0 console application compiles but the FindAll() operation returns an empty set

using System;
using Yubico.YubiKey;

namespace Yubikey
{
    class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine("Hello Yubikey!");
            var keys = YubiKeyDevice.FindAll(); //keys is empty!
            foreach (var key in keys)
            {
                Console.WriteLine(key);
            }
        }
    }
}

I have installed Yubico.YubiKey v1.1.0 using the Nuget Package Manager, on Visual Studio 2019 in Windows 10.

[GregDomzalski]

Hello,

Unfortunately the .NET SDK does not yet support the FIDO protocols of the YubiKey. We plan to add support in a future release.

Would it still be useful for you if the SDK would at least enumerate these keys, even if you cannot connect to the FIDO application on the key?

[nikosft]

In the YubiKey get started page there is a link to "Developer Resources" and I thought you could do something with the SDK and the YubiKey

[GregDomzalski]

Depending on what you would like to do with your security key, the two best integration points are probably:

Windows WebAuthn library: https://github.com/Microsoft/webauthn

or Yubico's libfido2: https://github.com/yubico/libfido2

There are some unofficial .NET bindings for libfido2 here: https://github.com/borrrden/Fido2Net

Sorry for the confusion this caused. I hope you find one of the above links helpful!