📧 CryptMail

CryptMail is a small-scale, full-stack web application that simulates a secure end-to-end encrypted email and login system. It combines modern encryption techniques — AES for fast symmetric encryption and RSA for secure asymmetric key exchange — to deliver both speed and security. Users can register, log in from multiple devices, and send/receive encrypted messages within a clean, responsive UI.

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🚀 Live Demo

[Link here]

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🛠️ Tech Stack

Frontend

• React
• HTML / CSS
• Material UI (MUI)
• Bootstrap
• Figma (UI prototyping)

Backend

• Node.js
• Express
• TypeScript
• Axios

Database

• MongoDB

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✨ Features

• 🔐 End-to-End Encryption
  Utilizes AES for fast message encryption and RSA for secure key exchange between users.

• 🔑 Secure Multi-Device Authentication
  Implements a custom handshake protocol and backend polling system to share private keys securely between devices.

• 📱 Responsive UI

• 📬 Email Functionality (CRUD)

  • Register & login
  • Compose and send messages
  • View received (inbox) and sent messages

• 🖥️ Multi-Page Interface
  Includes:

  • Login / Register pages
  • Inbox (new messages)
  • Sent messages
  • Email composition form

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🧪 Installation

Follow these steps to run the project locally:

1. Clone the Repository

git clone [repo-link]
cd backend
npm install
npm start

In another terminal:

cd frontend
npm install
npm run dev