.NET library for TOTP/HOTP implementation on server (ASP.NET) or client (Xamarin) side

## Features
- Generate and validate OTP codes
- Support of [TOTP](https://en.wikipedia.org/wiki/Time-based_One-time_password) (RFC 6238) and [HOTP](https://en.wikipedia.org/wiki/HMAC-based_one-time_password) (RFC 4226) algorithms
- Support of HMAC-SHA1, HMAC-SHA256 and HMAC-SHA512 hashing algorithms
- Setup URI parser
- Database-ready configuration models
- Configuration generator for server-side implementation
- QR code generator
- No dependencies