OneTimePassword 1.0.0-alpha1

This is a prerelease version of OneTimePassword.
dotnet add package OneTimePassword --version 1.0.0-alpha1                
NuGet\Install-Package OneTimePassword -Version 1.0.0-alpha1                
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="OneTimePassword" Version="1.0.0-alpha1" />                
For projects that support PackageReference, copy this XML node into the project file to reference the package.
paket add OneTimePassword --version 1.0.0-alpha1                
#r "nuget: OneTimePassword, 1.0.0-alpha1"                
#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.
// Install OneTimePassword as a Cake Addin
#addin nuget:?package=OneTimePassword&version=1.0.0-alpha1&prerelease

// Install OneTimePassword as a Cake Tool
#tool nuget:?package=OneTimePassword&version=1.0.0-alpha1&prerelease                


RFC 4226 (HOTP) and RFC 6238 (TOTP) implementation for .NET, also supports parsing Key Uri Format for Google Authenticator Uris and Steam's custom TOTP implementation.

This library does not include server side validation logic, however you can implement your own logic using this library according to your security requirements.


To be published on Nuget soon

Usage examples

From Uri

AuthenticatorAccount.TryParse("otpauth://totp/", out var account); 
var password = account.GeneratePassword().Password;

From custom parameters

using (var hmac = HMAC.Create("HMACSHA1"))
    var length = 6;
    var time = DateTimeOffset.Now;
    var period = TimeSpan.FromSeconds(30);
    var secret = Encoding.ASCII.GetBytes("12345678901234567890");
    var password = new TimeBasedAuthenticator().GeneratePassword(length, hmac, secret, time, period).Password;


Copyright 2019 Prajay Basu

Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.

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. 
.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 was computed. 
.NET Framework net461 was computed.  net462 was computed.  net463 was computed.  net47 was computed.  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.
  • .NETStandard 2.0

    • No dependencies.

NuGet packages

This package is not used by any NuGet packages.

GitHub repositories

This package is not used by any popular GitHub repositories.

Version Downloads Last updated
1.0.0-alpha1 359 9/22/2019