Yubico.Core 1.12.1

.NET Standard 2.0 This package targets .NET Standard 2.0. The package is compatible with this framework or higher. .NET Framework 4.7 This package targets .NET Framework 4.7. The package is compatible with this framework or higher.
There is a newer version of this package available.
See the version list below for details. 
dotnet add package Yubico.Core --version 1.12.1
                    


                    

                
NuGet\Install-Package Yubico.Core -Version 1.12.1
This command is intended to be used within the Package Manager Console in Visual Studio, as it uses the NuGet module's version of Install-Package. 
<PackageReference Include="Yubico.Core" Version="1.12.1" />
For projects that support PackageReference, copy this XML node into the project file to reference the package. 
<PackageVersion Include="Yubico.Core" Version="1.12.1" />
                    


                            Directory.Packages.props
                        

                    

                
<PackageReference Include="Yubico.Core" />
                    


                            Project file
For projects that support Central Package Management (CPM), copy this XML node into the solution Directory.Packages.props file to version the package. 
paket add Yubico.Core --version 1.12.1
                    


                    

                
#r "nuget: Yubico.Core, 1.12.1"
#r directive can be used in F# Interactive and Polyglot Notebooks. Copy this into the interactive tool or source code of the script to reference the package. 
#:package Yubico.Core@1.12.1
#:package directive can be used in C# file-based apps starting in .NET 10 preview 4. Copy this into a .cs file before any lines of code to reference the package. 
#addin nuget:?package=Yubico.Core&version=1.12.1
                    


                            Install as a Cake Addin
                        

                    

                
#tool nuget:?package=Yubico.Core&version=1.12.1
                    


                            Install as a Cake Tool

build-action-status tests-action-status tests-windows-action-status tests-ubuntu-action-status tests-macos-action-status codeql-analysis-action-status

.NET YubiKey SDK

Enterprise-grade cross-platform SDK for YubiKey integration, built on .NET.

Table of Contents

Quick Start

Installation

dotnet add package Yubico.YubiKey

Basic Usage

using Yubico.YubiKey;

// Chooses the first YubiKey found on the computer.
IYubiKeyDevice? SampleChooseYubiKey()
{
    IEnumerable<IYubiKeyDevice> list = YubiKeyDevice.FindAll();
    return list.First();
}

Documentation

📚 Official documentation: docs.yubico.com/yesdk

  • User Manual
  • API Reference

SDK Support

Supported Target Frameworks:

  • .NET Framework 4.7
  • .NET Standard 2.1
  • .NET 6 and above

SDK Packages

Public Assemblies

Yubico.YubiKey

Primary assembly containing all classes and types needed for YubiKey interaction.

Yubico.Core

Platform abstraction layer (PAL) providing:

  • OS-specific functionality abstraction
  • Device enumeration
  • Utility classes for various encoding/decoding operations:
    • Base16
    • Base32
    • Tag-Length-Value (BER Encoded TLV)
    • ModHex

Internal Assemblies

Yubico.DotNetPolyfills

⚠️ Not for public use
Backports BCL features needed by the SDK.

Yubico.NativeShims

⚠️ Not for public use
🔧 Unmanaged Library
Provides stable ABI for P/Invoke operations in Yubico.Core.

Project Structure

Repository organization:

  • 📁 docs/ - API documentation and supplementary content
  • 📁 examples/ - Sample code and demonstrations
  • 📁 src/ - Source code for all projects
  • 📁 tests/ - Unit and integration tests

Contributing

  1. Read the Contributor's Guide
  2. Review Getting Started
  3. Submit your Pull Request

Building the Project

Prerequisites:

  1. Install required tools (see Getting Started)
  2. Load Yubico.NET.SDK.sln into your IDE.
  3. Build solution

Connect with us

📫 Need help? Create an issue
📖 Read our blog for the latest Yubico updates here

Product Compatible and additional computed target framework versions.
.NET net5.0 was computed.  net5.0-windows was computed.  net6.0 was computed.  net6.0-android was computed.  net6.0-ios was computed.  net6.0-maccatalyst was computed.  net6.0-macos was computed.  net6.0-tvos was computed.  net6.0-windows was computed.  net7.0 was computed.  net7.0-android was computed.  net7.0-ios was computed.  net7.0-maccatalyst was computed.  net7.0-macos was computed.  net7.0-tvos was computed.  net7.0-windows was computed.  net8.0 was computed.  net8.0-android was computed.  net8.0-browser was computed.  net8.0-ios was computed.  net8.0-maccatalyst was computed.  net8.0-macos was computed.  net8.0-tvos was computed.  net8.0-windows was computed.  net9.0 was computed.  net9.0-android was computed.  net9.0-browser was computed.  net9.0-ios was computed.  net9.0-maccatalyst was computed.  net9.0-macos was computed.  net9.0-tvos was computed.  net9.0-windows was computed.  net10.0 was computed.  net10.0-android was computed.  net10.0-browser was computed.  net10.0-ios was computed.  net10.0-maccatalyst was computed.  net10.0-macos was computed.  net10.0-tvos was computed.  net10.0-windows was computed. 
.NET Core netcoreapp2.0 was computed.  netcoreapp2.1 was computed.  netcoreapp2.2 was computed.  netcoreapp3.0 was computed.  netcoreapp3.1 was computed. 
.NET Standard netstandard2.0 is compatible.  netstandard2.1 is compatible. 
.NET Framework net461 was computed.  net462 was computed.  net463 was computed.  net47 is compatible.  net471 was computed.  net472 was computed.  net48 was computed.  net481 was computed. 
MonoAndroid monoandroid was computed. 
MonoMac monomac was computed. 
MonoTouch monotouch was computed. 
Tizen tizen40 was computed.  tizen60 was computed. 
Xamarin.iOS xamarinios was computed. 
Xamarin.Mac xamarinmac was computed. 
Xamarin.TVOS xamarintvos was computed. 
Xamarin.WatchOS xamarinwatchos was computed. 
Compatible target framework(s)
Included target framework(s) (in package)
Learn more about Target Frameworks and .NET Standard.

NuGet packages (1)

Showing the top 1 NuGet packages that depend on Yubico.Core:

Package Downloads
Yubico.YubiKey

Yubico.YubiKey is the official .NET library for integrating with the YubiKey hardware authenticator. This library supports both macOS and Windows operating systems.

GitHub repositories

This package is not used by any popular GitHub repositories.

Version Downloads Last Updated
1.14.0 50 9/17/2025
1.13.2 974 7/3/2025
1.13.1 5,389 4/28/2025
1.13.0 836 4/9/2025
1.12.1 3,225 12/19/2024
1.12.0 360 12/17/2024 1.12.0 is deprecated because it has critical bugs.
1.11.0 57,455 6/29/2024
1.10.0 14,911 4/11/2024
1.9.1 19,419 11/15/2023
1.9.0 2,931 10/13/2023
1.8.0 4,087 6/29/2023
1.7.0 3,344 4/3/2023
1.6.1 1,872 2/3/2023
1.6.0 599 1/16/2023
1.5.1 1,426 11/18/2022
1.5.0 658 10/28/2022
1.4.2 1,350 9/27/2022
1.4.1 873 9/12/2022
1.4.0 1,959 6/30/2022
1.3.1 1,199 4/14/2022
1.3.0 1,149 4/1/2022
1.2.0 1,112 2/8/2022
1.1.0 727 12/3/2021
1.0.2 723 10/27/2021
1.0.0 854 8/30/2021
1.0.0-Beta.20210721.1 301 7/21/2021
1.0.0-Beta.20210618.1 371 6/18/2021