Secure UPI-Based Digital Payment System with Multi-Factor Authentication

This project aims to design a secure UPI-style digital payment system integrating multi-factor authentication mechanisms. The system ensures safe and fast transactions while protecting users against unauthorized access and payment fraud.

Study Unified Payment Interface (UPI) transaction flow and architecture.

Analyze security risks such as phishing, SIM swap fraud, and OTP interception.

Design system modules for user registration, linking bank accounts, and transaction initiation.

Implement secure login using password and OTP verification.

Add device binding or PIN-based transaction authorization.

Encrypt transaction data during transmission.

Log transaction activities for monitoring suspicious patterns.

Simulate peer-to-peer and merchant payment scenarios.

Test authentication reliability and fraud resistance.

Evaluate system usability and response time.

Document security enhancements and scalability aspects.