Implementation of Privacy-Preserving Computation techniques

This project is an implementation of privacy-preserving computation techniques using Python and Flask. The project consists of two servers, the Bank Server and the Computation Server. The following techniques are implemented in the project:

• Homomorphic Encryption
• Secure Multi-Party Computation
• Zero-Knowledge Proof

Installation

To install the project, you need to have Python 3.19 installed on your machine.

• clone the repository
• install the requirements

Bank Server

The Bank Server is a server that contains a database of users and transactions and provides and interactive Gui.

Running the Bank Server

To run the Bank Server, you need to have Python 3.19 installed on your machine. Then run the following commands.

cd Bank_Server 
python run.py

Folder Structure

The app folder contains all the source code for the Bank Server. The database folder contains the database schema and the database connection file and also a controller file for the database connection.

The run.py file is the entry point for the Bank Server. The database folder contains the database schema and the database controller and a file to generate random data for the database.

The app folder contains the following :

• __init__.py:

  • This file initializes the app and contains all the routes for the app.

• data:

  • This folder contains the simple api to access the database.

• homomorphic_encryption:

  • This folder contains the homomorphic encryption implementation.
  • The file "homomorphic_encryption.py" contains the implementation of the homomorphic encryption.
  • The file "routes.py" contains the routes for the homomorphic encryption.

• main:

  • the "/users_page" route renders the user database table
  • the "/transactions_page" route renders the transactions database table

• smpc:

  • This folder contains the secure multi-party computation implementation.
  • The file "shamir_secret_sharing.py" contains the implementation of the secure multi-party computation.
  • The file "routes.py" contains the routes for the secure multi-party computation.

• zero_knowledge_proof:

  • This folder contains the zero-knowledge proof implementation.
  • To be implemented in the future for something
  • I thought about implementing it to authenticate at the computation server

• templates:

  • This folder contains the html files for the routes.

Computation Server

• Server to perform the homomorphic encryption.
• has some routes to perform the homomorphic encryption.

Running the Computation Server

To run the Computation Server, you need to run the following commands.

cd Computation_Server 
python app.py