Secure Contract Exchange Demo

Overview

This project is a Flask web application that demonstrates a secure contract exchange protocol using real cryptographic operations. It simulates a multi-step workflow in the browser, including certificate generation, trust establishment, key exchange, encryption, digital signatures, verification, and tamper detection.

Features

Interactive browser-based protocol walkthrough
X.509 certificate generation
ECDH shared secret derivation
AES-256-GCM authenticated encryption
ECDSA digital signatures and verification
Tamper detection through hash/signature mismatch
Live display of cryptographic values during the simulation

Technologies Used

Python
Flask
cryptography
HTML / CSS / JavaScript

How to Run

Clone the repository
Install dependencies:

pip install -r requirements.txt

opokuk3/secure-contract-exchange-demo

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