🔐 E-Authentication System Using QR Code and OTP

A secure, modern web application that implements multi-factor authentication (MFA) using Flask, PostgreSQL, and QR Code–based One-Time Passwords (OTP). Built to enhance user verification, data privacy, and session security in digital environments.

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📌 Project Overview

This project demonstrates a practical implementation of an advanced authentication workflow combining:

• 📱 Traditional login with email/password
• 🧾 QR Code–based OTP verification
• 🗂️ PostgreSQL for secure data storage
• 🔐 Flask session management for state persistence

Developed as a proof-of-concept system for enterprise-level security and user access control.

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🚀 Key Features

• 🔑 User Registration and Login

  • Encrypted storage of credentials in PostgreSQL
  • Real-time input validation

• 📷 QR Code–Based OTP Authentication

  • Dynamic QR code generation using Python's qrcode library
  • OTP generation and verification logic

• 🧠 Flask-Based Web Application

  • Lightweight backend handling routes, forms, and sessions
  • HTML/CSS frontend with a clean, responsive UI

• 🔒 Session Management

  • Flask session persistence after login for profile navigation
  • Logout and session expiration handling

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🛠️ Tech Stack

• Backend: Python (Flask)
• Frontend: HTML5, CSS3
• Database: PostgreSQL
• Libraries: qrcode, psycopg2, Flask
• Tools: Git, GitHub

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📁 Project Structure

├── app.py                # Main Flask app
├── templates/            # HTML templates (login, register, profile)
├── static/               # CSS (optional)
├── requirements.txt      # Python dependencies
└── README.md             # Project overview

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🧠 What I Learned

• How to build multi-factor authentication systems
• Integrating QR code and OTP logic securely
• Database interaction with PostgreSQL from Flask
• Managing user sessions and web security flows

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👨‍💻 About Me

Hi, I’m SYED IBRAHIM A – a passionate B.Tech CSE Graduate (AI, IBM Certified) dedicated to solving real-world problems through tech. I build full-stack web apps, AI/ML projects, and secure systems.

• 💼 Open to Roles: Software Developer, Backend Engineer, QA, Security Analyst, Technical Support
• 🌍 Location: Chennai, India (Remote/Hybrid/On-site)
• 🔗 GitHub: https://github.com/ibrahimcreator/

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📜 License

This project is licensed under the MIT License.

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Feel free to fork, use, or contribute to this repository. Collaboration and feedback are always welcome!