Securing Data with Novel Flip-Flop Circuit Authentication Algorithm

A secure authentication system implementing a novel Flip-Flop–based password transformation algorithm combined with SHA-256 encryption and dynamic token generation. This project demonstrates advanced concepts in authentication security, state-based logic, and secure session handling using Python and Streamlit.

Live Demo:

https://final-yr-project-exhvzbn5de2ttjzoyth7av.streamlit.app/

Project Overview:

1. Traditional authentication systems rely on static password hashing, which can be vulnerable to replay attacks and pattern analysis.

2. This project introduces a Flip-Flop circuit–inspired transformation mechanism that dynamically alters password states before encryption, ensuring enhanced security.

3. Each successful login generates a unique session token, even for repeated logins with the same credentials.

Key Features:

1. Flip-Flop Password Transformation
2. SHA-256 Secure Password Encryption
3. Dynamic Token Generation (Time + Random Seed)
4. Login Timestamp Tracking
5. Login History with Token Records
6. State-based Authentication Logic
7. Web Interface using Streamlit

Tech Stack:

1. Programming Language: Python
2. Framework: Streamlit
3. Security: SHA-256 (hashlib)

Concepts Used:

1. Flip-Flop Logic
2. State Machines
3. Cryptographic Hashing
4. Token-Based Authentication

Authentication Workflow:

1️. User Registration:

• Password is transformed using a flip-flop logic algorithm
• Transformed password is encrypted using SHA-256
• Credentials stored securely in session state

2️. User Login:

• Password is re-transformed and encrypted
• Encrypted value is matched against stored hash
• A new token is generated for every successful login

3. Token Generation:

• Token is generated based on:
• Username
• Transformed password
• Current timestamp
• Random seed
• Ensures non-reusable tokens

Login History:

Tracks:

1. Login count
2. Login timestamps
3. Generated tokens

Application Screens:

1. User Registration
2. Secure Login
3. Token Generation
4. Login History Viewer
5. Registered Users Dashboard

Academic Relevance:

This project was developed as a Final Year Engineering Project and demonstrates:

1. Secure system design
2. Authentication algorithms
3. Real-world application of cryptography
4. Practical implementation of theoretical digital logic concepts

Why This Project Matters (For Recruiters):

1. Demonstrates security-focused thinking
2. Goes beyond basic CRUD authentication
3. Implements custom authentication logic
4. Shows ability to build production-like systems
5. Strong foundation for Backend / Security / Software Developer roles

Author:

Nabin Gayak H | B.E. Computer Science Engineering | Entry-level Software Developer | Java | React

Links:

GitHub: https://github.com/NABINGAYAKH

Portfolio: https://nabingayakh.github.io/MY_PORTFOLIO/

License:

This project is for educational and academic use.