Otp.NET
A .NET library for generating and validating TOTP and HOTP codes, commonly used for two-factor authentication.
What is Otp.NET?
Otp.NET is a .NET library that implements TOTP (Timed One-Time Password) and HOTP (HMAC-based One-Time Password) algorithms for generating and validating one-time codes. It solves the need for secure two-factor authentication in .NET applications by providing RFC-compliant methods to create and verify time-based or counter-based passwords.
.NET developers building applications that require two-factor authentication, such as web apps, mobile apps using Mono, or server-side systems that need to validate OTP codes.
Developers choose Otp.NET for its strict adherence to RFC standards, flexibility in configuration (hash algorithms, time steps, code length), and built-in features like time correction and verification windows, making it a reliable and easy-to-integrate solution for OTP-based security.
Overview
A .NET implementation of TOTP and HOTP for things like two-factor authentication codes.
Use Cases
Best For
- Adding two-factor authentication to .NET web applications
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