Algorithm of Generating One-Time Passwords for Two-Factor Authentication of Users

This article explores the issue of creating one-time passwords for effective user authentication. It also offers a one-time password generation algorithm used in two-factor authentication. The recommended two-factor authentication algorithm uses static and dynamic passwords. In this case, the static password is chosen by the users themselves. A dynamic password is generated according to a certain algorithm and valid for a certain period of time. The developed two-factor algorithm includes two stages. In the first step, users are authenticated based on their login and password. In the second step, one-time passwords are generated for users and authentication is performed based on these passwords. Accordingly, this article explores methods and algorithms based on the generation of one-time passwords.