Secure-FTP

Designed and built a basic TCP-oriented Secure File Transfer Protocol (SFTP) with Diffie-Hellmann key exchange protocol, modified Caesar Cipher for encryption, DSS signature scheme, and SHA1 for password hashing.

Requirements

• Python3

Usage

Run server :- python server.py 
Run client :- python client.py    

Project Scope

• Multiple client support with threading
• Command-line interface with options: signup, login, chat, download
• Implemented authentic, secure file transfer system with Diffie-Hellmann key exchange protocol, modified Caesar Cipher and Digital Signature Algorithm
• Implemented password hashing using SHA-1 secure hash function
• Implemented Miller-Rabin primality test and prime factorization algorithms like Pollard rho and Quadratic sieve

TODO

• MD5 checksum to handle file transfer errors.
• Directory Download
• Upload feature to upload any kind of file and folders
• Data compression and archiving
• Experiment with other better encryption standards