what is yubico_otp_rs fr?

This project is a toolkit for verifying YubiKey one-time passwords in apps written in Rust. A YubiKey is a small hardware device that generates a unique, single-use code each time you press the button (or tap it). If you're building a login system that requires these hardware keys, this library handles the behind-the-scenes work of checking whether a given code is valid. When a user taps their YubiKey, the code it produces needs to be checked against Yubico's validation servers to confirm it's genuine. This library packages up that request and response cycle. You provide your account credentials and the one-time password the user entered, and the library contacts the validation service to check it. It then hands you back a simple answer: whether the code was accepted or rejected, along with the server's full response details. This is aimed at developers building authentication systems who want to add hardware key support to their Rust applications. For example, if you're creating a login portal for a company that requires employees to use YubiKeys for two-factor authentication, you'd use this library to validate each key press against Yubico's servers. It handles the protocol details so you can focus on the rest of your login flow. The project implements version 2.0 of Yubico's official validation protocol. Beyond the example code showing how to configure credentials and check a password, the README doesn't go into much further detail about additional configuration options or setup requirements.