How to organize the interaction of the browser and the electronic USB-key?

Question

Browsers

Task: it is necessary to develop a system for controlling access of users (clients) to a web service. User authorization is possible only after the user has successfully passed the authentication procedure. User authentication must use (at least) two factors, one of which is a USB dongle.
Question: how to establish interaction between the browser and the USB key (token)? Is it enough to create a plugin/extension? Is there any alternative solution?

Answer 1

There are different ways to interact. But basically - yes, it's a plugin. For example, you can see how the State Services website works.
When you first log in, you are asked to download and install a program that registers a plugin for IE and Mozilla browsers. (tested in IE, FF and Opera). This plugin allows the code from the page to perform cryptographic operations on the token.
A token is an Aladdin key (CCID device. On whist, seven, etc. does not require additional drivers) which is a USB device with some cryptographic functionality.

Answer 2

https://www.cryptopro.ru/products/cpfox
As an option?