Multi‑Factor Authentication System - Technical & Engineering Guide
1. Introduction
1.1 Purpose
Explain objectives: enhance system security by requiring
multiple authentication factors:
- Something you know (password/PIN)
- Something you have (smartphone, hardware token)
- Something you are (biometrics)
1.2 Scope
Define boundaries: MFA for user logins—web, mobile, admin—and integration with existing identity systems, such as Active Directory, OAuth2/SAML, or internal user databases.
1.3 Definitions & Acronyms
Acronym |
Definition |
MFA |
Multi-Factor Authentication |
TOTP |
Time-based One-Time Password |
OTP |
One-Time Password |
SMS |
Short Message Service |
SAML |
Security Assertion Markup Language |
PKI |
Public Key Infrastructure |
HSM |
Hardware Security Module |
2. Architecture Overview
Detailed sections covering system components, data flow, security, and fallback strategies.