https://github.com/mingikang31/sift-v1.0
Cryptography Project
https://github.com/mingikang31/sift-v1.0
cryptography encryption-decryption python3
Last synced: about 1 year ago
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Cryptography Project
- Host: GitHub
- URL: https://github.com/mingikang31/sift-v1.0
- Owner: mingikang31
- License: mit
- Created: 2024-11-04T08:19:07.000Z (over 1 year ago)
- Default Branch: main
- Last Pushed: 2024-12-15T15:39:51.000Z (over 1 year ago)
- Last Synced: 2025-05-24T00:12:49.492Z (about 1 year ago)
- Topics: cryptography, encryption-decryption, python3
- Language: Python
- Homepage:
- Size: 158 KB
- Stars: 1
- Watchers: 1
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- License: LICENSE
Awesome Lists containing this project
README
# Simple File Transfer (SiFT) Protocol Version 1.0
## Table of Contents
- [Overview](#overview)
- [Features](#features)
- [Project Structure](#project-structure)
- [Getting Started](#getting-started)
- [Prerequisites](#prerequisites)
- [Installation](#installation)
- [Generating RSA Keys](#generating-rsa-keys)
- [Usage](#usage)
- [Running the Server](#running-the-server)
- [Running the Client](#running-the-client)
- [Logging In](#logging-in)
- [Available Commands](#available-commands)
- [Example](#example)
- [Uploading a File](#uploading-a-file)
- [Authors](#authors)
- [License](#license)
## Overview
The **Simple File Transfer (SiFT)** project is a secure file transfer system designed to allow clients to perform file operations on a server remotely. This implementation covers version **0.5** of the SiFT protocol, which includes non-cryptographic features such as sending commands for file manipulation and uploading/downloading files in smaller pieces. Additionally, the project extends to version **1.0**, incorporating cryptographic protections to ensure secure communication between the client and server.
## Features
- **User Authentication:** Secure login with session key establishment using RSA and AES encryption.
- **File Operations:** Execute commands like `pwd`, `lst`, `chd`, `mkd`, `del`, `upl`, and `dnl` to manage files and directories on the server.
- **Secure Communication:** Implements AES-GCM for encrypted message transfer and protects against replay attacks.
- **File Transfer:** Supports uploading and downloading files in 1024-byte fragments with integrity verification using SHA-256 hashes.
- **Extensible Protocols:** Designed to easily extend or modify protocol features as needed.
## Project Structure
```plaintext
SiFT/
├── specification/
│ ├── SiFT v1.0 specification.md
│ └── Cryptography Project Instructions.txt
├── server/
│ ├── keys/
│ │ └── keypair.pem
│ ├── rsa.py
│ ├── server.py
│ ├── siftprotocols/
│ │ ├── siftcmd.py
│ │ ├── siftdnl.py
│ │ ├── siftlogin.py
│ │ ├── siftmtp.py
│ │ └── siftupl.py
│ ├── users.txt
│ └── users/
│ ├── alice/
│ ├── bob/
│ └── charlie/
├── client/
│ ├── client.py
│ ├── keys/
│ │ └── public_key.pem
│ ├── siftprotocols/
│ │ ├── siftcmd.py
│ │ ├── siftdnl.py
│ │ ├── siftlogin.py
│ │ ├── siftmtp.py
│ │ └── siftupl.py
│ ├── test_1.txt
│ └── test_2.txt
├── README.md
├── requirements.txt
└── LICENSE
```
## Getting Started
### Prerequisites
- **Python 3.8 or higher**
- **pip** (Python package installer)
- **OpenSSL** (for RSA key generation)
### Installation
1. **Clone the Repository:**
```bash
git clone https://github.com/mkang817415/SiFT-v1.0.git
cd SiFT-v1.0
```
### Installation
2. **Install Required Python Packages:**
It's recommended to use a virtual environment.
```bash
python3 -m venv venv
source venv/bin/activate # On Windows: venv\Scripts\activate
pip install -r requirements.txt
```
### Generating RSA Keys
To secure the communication between the client and server, generate an RSA key-pair for the server.
```bash
cd server
python3 rsa.py
```
## Usage
### Running the Server
1. **Navigate to Server Directory and Start the Server:**
```bash
cd server
python3 server.py
```
### Running the Client
1. **Open a New Terminal Window**
2. **Navigate to Client Directory and Start the Client:**
```bash
cd client
python3 client.py
```
### Logging In:
Upon starting the client, you will be prompted to log in. Use one of the predefined test users:
- alice/aaa
- bob/bbb
- charlie/ccc
#### Example:
```plaintext
Username: alice
Password: aaa
```
### Available Commands
After a successful login, type help to view available commands:
- **pwd**: Print current working directory.
- **lst**: List contents of the current directory.
- **chd [directory]**: Change directory.
- **mkd [directory]**: Make a new directory.
- **del [file/directory]**: Delete a file or directory.
- **upl [filename]**: Upload a file to the server.
- **dnl [filename]**: Download a file from the server.
- **exit**: Close the client.
## Example
### Uploading A File:
1. **Command:**
```bash
upl example.txt
```
2. **Response:**
```bash
upl
accept
```
## Authors
- **Mingi Kang** - *Collaborator* - [mkang817415](https://github.com/mkang817415)
- **David Rhoades** - *Collaborator* - [David-Rhoadess](https://github.com/David-Rhoadess)
- **Vagmin Viswanathan** - *Collaborator* - [vagminv](https://github.com/vagminv)
- **Dr. Levente Buttyán** - *Instructor*
## License
This project is licensed under the MIT License - see the [LICENSE](LICENSE) file for details.