OneTimePassword 1.0.0-alpha1

This is a prerelease version of OneTimePassword.
Install-Package OneTimePassword -Version 1.0.0-alpha1
dotnet add package OneTimePassword --version 1.0.0-alpha1
<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
The NuGet Team does not provide support for this client. Please contact its maintainers for support.
#r "nuget: OneTimePassword, 1.0.0-alpha1"
#r directive can be used in F# Interactive, C# scripting and .NET Interactive. 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
The NuGet Team does not provide support for this client. Please contact its maintainers for support.


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.

  • .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 215 9/22/2019