OTP

Topic 2 Posts

An OTP (One-Time Password) code is a temporary and unique authentication code used to verify a user's identity for a single login session or transaction. Unlike traditional static passwords, which remain the same until changed by the user, OTP codes are generated dynamically and expire after a short period or upon their usage.

Implementing RFC 4226: Creating a HOTP Generator in Node.js

By Seth in Node.js on 12 Mar 2024

RFC 4226 is the HMAC--Based One-Time Password (HOTP) algorithm, which, stands as a fundamental method for generating one-time passwords used in two-factor authentication systems.…

Implementing RFC 6238 in Node.js

By Seth in Node.js on 09 Jan 2024

RFC 6238 describes how to implement the Time-Based One-Time Password algorithm, This is a guide on how to implement it in Node.js.…