https://github.com/zoraizmohammad/cipher-shield

Making Discrimination Mathematically Impossible (TreeHacks 2025)
https://github.com/zoraizmohammad/cipher-shield

algorithms blockchain cipher-algorithms data encryption fhe front-end-development hackathon homomorphic-encryption treehacks

Last synced: 2 months ago
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Making Discrimination Mathematically Impossible (TreeHacks 2025)

• Host: GitHub
• URL: https://github.com/zoraizmohammad/cipher-shield
• Owner: zoraizmohammad
• License: mit
• Created: 2025-02-15T05:03:58.000Z (about 1 year ago)
• Default Branch: main
• Last Pushed: 2025-02-16T13:42:04.000Z (about 1 year ago)
• Last Synced: 2025-03-06T13:41:38.787Z (about 1 year ago)
• Topics: algorithms, blockchain, cipher-algorithms, data, encryption, fhe, front-end-development, hackathon, homomorphic-encryption, treehacks
• Language: Makefile
• Homepage: https://devpost.com/software/cipher-shield
• Size: 107 MB
• Stars: 0
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

          
# CipherShield

**Cipher Shield** is a decentralized data aggregation platform that leverages advanced **homomorphic encryption** and **blockchain** technology to provide secure, privacy-preserving insights. This document outlines the inspiration behind our project, how it works, our architecture, the challenges we faced, our learnings, and our future roadmap.

## Table of Contents

- [Inspiration](#inspiration)

- [What It Does](#what-it-does)

- [How We Built It](#how-we-built-it)

- [Challenges We Ran Into](#challenges-we-ran-into)

- [Accomplishments That We’re Proud Of](#accomplishments-that-were-proud-of)

- [What We Learned](#what-we-learned)

- [What’s Next for Cipher Shield](#whats-next-for-cipher-shield)

## Inspiration

The inspiration for our project came from a **problem-based approach** to ideation. As students, we frequently fill out job applications that require demographic data. Most applicants simply opt out, as there appears to be no tangible benefit—only a potential downside if the information is **illegally misused** to negatively affect applications.

> **Note:** Despite these concerns, demographic collection is crucial for detecting trends that may expose discrimination. In fields like **employment**, **healthcare**, **loans**, and **credit cards**, collecting this data is often mandated by the federal government.  

>  

> In an era defined by **decentralization** and advanced **encryption schemes**, we believe there is no reason for such sensitive information to be misused, rendering harmful practices **mathematically impossible**.

## What It Does

**Cipher Shield** serves as a trusted third party that provides secure data aggregation services via the **blockchain**. It empowers companies to extract aggregate statistical insights from **homomorphically encrypted data**, ensuring that individual profiles remain completely private.

## How We Built It

### Blockchain Integration

- **Immutable Records:** Every aggregation request is stored on the blockchain, creating a transparent, permanent record.

- **On-Chain Validation:**  

  Before any homomorphic computation begins, our smart contract conducts a critical on-chain validation to ensure that there are enough records to prevent reverse engineering.  

  - If insufficient data points exist, the contract automatically **rejects the request**.

- **Audit Trail:**  

  Once validated and computed, the aggregated result is stored on-chain, ensuring every step is permanently verifiable.

### Technology Stack

- **Business Logic:** Written entirely in `C++` and `solidity` to handle complex encryption schemes and blockchain operations.

- **Encryption:** Utilizes the **OpenFHE** library for homomorphic encryption operations and key generation.

- **Demo Ecosystem:** As a B2B product, our demo features a full demo business, which necessitated a complete backend and frontend solution.

## Challenges We Ran Into

We encountered several challenges during the development process:

- **Homomorphic Encryption Implementation:**  

  Implementing our custom design in the **OpenFHE** library, particularly with the dual private key setup that wasn’t available out of the box.

- **Backend Development:**  

  Developing the backend in `C++` to manage data aggregation and ensuring the proper serialization/deserialization for key exchange.

- **Ciphertext Management:**  

  Handling large payloads of ciphertext in communications between the company and server, as well as storing this data securely.

## Accomplishments That We’re Proud Of

- **Pioneering Implementation:**  

  Created the **first-ever implementation** of a split key homomorphic encryption scheme that is also verified through blockchain technology.

- **Deep Technical Insights:**  

  Gained extensive knowledge about **homomorphic encryption** and **blockchain** technologies.

- **Full-Stack Integration:**  

  Successfully integrated the complete stack of the application, ensuring that all components—including Customer Data, Company/Organization interfaces, and the Authority layer—worked seamlessly together in a local environment.

## What We Learned

During the project, we expanded our knowledge in several key areas:

- **Advanced Encryption Techniques:**  

  Implementing and modifying homomorphic encryption libraries to support split keys.

- **Data Security in B2B SaaS:**  

  Understanding the significance of data security and insurance in B2B solutions, and identifying market opportunities that benefit both businesses and consumers.

- **Web Integration:**  

  Integrating **Web-2** with **Web-3** technologies, including the creation of full-stack visualizations and blockchain integrations, even with limited initial experience.

- **Full-Stack Development:**  

  Building robust front-end applications and learning to balance creativity with technical feasibility.

- **Web-3 Security:**  

  Recognizing the crucial role of Web-3 in enhancing web application security.

## What’s Next for Cipher Shield

We envision Cipher Shield as the standard for mediating demographic and protected data collection across American companies—driving transformative societal outcomes in mitigating discrimination.

### Future Plans:

- **Scalable Data Aggregation:**  

  Extending our capabilities to securely combine datasets from multiple sources (e.g., hospital records).

- **Developer SDK:**  

  Creating an easy-to-use SDK for organizations and industries that are less familiar with blockchain and encryption.

- **Seamless Integration:**  

  Developing a web embedding feature to allow companies to directly integrate a Cipher Shield form or application into their websites.

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