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Cross Platform KeepKey Hardware Wallet C# Library
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NuGet Release Oct 10, 2018
src Readme. Apr 28, 2019


Cross Platform C# Library for the KeepKey Cryptocurrency Hardwarewallet

Would you like to contribute?

Quick Start

  • Clone the repo and open the solution
  • There is a console sample, Xamarin Forms sample and unit tests
  • Compile one of the unit test apps, run the UWP/Android Xamarin Forms apps or,
  • Go to Test->Windows->Text Explorer in Visual Studio
  • Run one of the unit tests in the pane.

All KeepKey messages are in the KeepKey.Net.Contracts namespace. To implement them, you need to call SendMessageAsync

NuGet: Install-Package KeepKey.Net


private static async Task<string> GetAddressAsync(uint coinNumber, bool isChange, uint index, bool display, bool isPublicKey = false, bool isLegacy = true)
    var keepKeyManagerBroker = new KeepKeyManagerBroker(GetPin, GetPassphrase, 2000);
    var keepKeyManager = await keepKeyManagerBroker.WaitForFirstTrezorAsync();
    await keepKeyManager.InitializeAsync();
    var coinTable = await keepKeyManager.GetCoinTable();
    keepKeyManager.CoinUtility = new KeepKeyCoinUtility(coinTable);
    var coinInfo = KeepKeyManager.CoinUtility.GetCoinInfo(coinNumber);
    var addressPath = new BIP44AddressPath(!isLegacy && coinInfo.IsSegwit, coinNumber, 0, isChange, index);
    var address = await KeepKeyManager.GetAddressAsync(addressPath, isPublicKey, display);
    return address;



The community needs your help! Unit tests, integration tests, more app integrations and bug fixes please! Check out the Issues section.


All my libraries are open source and free. Your donations will contribute to making sure that these libraries keep up with the latest firmware, functions are implemented, and the quality is maintained.

Coin Address
Bitcoin 33LrG1p81kdzNUHoCnsYGj6EHRprTKWu3U
Ethereum 0x7ba0ea9975ac0efb5319886a287dcf5eecd3038e

Based On

Library Description
Trezor.Net Trezor Hardwarewallet Library. KeepKey's and Trezor's protocol are very similar
Hardwarewallets.Net This library is part of the Hardwarewallets.Net suite. It is aimed toward putting a set of common C# interfaces, and utilities that will work with all hardwarewallets.
Hid.Net, Usb.Net Trezor.Net communicates with the devices via the Hid.Net and Usb.Net libraries. You can see the repo for this library here.

See Also

Library Description
Trezor.Net Trezor Hardwarewallet Library
Ledger.Net Ledger Hardwarewallet Library
Ledger .NET API A similar Ledger library
Ledger Bitcoin App Bitcoin wallet application for Ledger Blue and Nano S
Ledger Ethereum App Ethereum wallet application for Ledger Blue and Nano S

Hardfolio - Store App Production Usage (Android) (UWP)

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