openu-cyber-101-course

OpenU course 20940 final project, kerberos

Architecture:

run commands

Configure local Environment

python3 -m venv venv

source venv/bin/activate

pip install -r requirements.txt

Setup Pytest

pip install -U pytest

then to run tests:

cd ./tests
pytest

Components

• Auth Server
• Client
• Messaging Server

Overview

• Client --> Auth Server: IDs, Nonce
• Auth Server --> Client: EKc(Kc,s, Nonce), Ticket
• Client -->Msg Server: Ticket, Authenticator
• Msg Server -->Client: KeyAck
• Client --> Msg Server: EKc,s(Message)
• Msg Server -->Client: MsgAck

Files explained

1. port.info -> saves the port number (example: 1234)
2. clients.info -> clients data file with structure: ID:Name:PasswordHash:LastSeen:
3. servers.info -> servers data file with structure: ID:Name:AESKey:
4. me.info -> client data, see below for more details
5. msg.info -> messaging server data, see below
6. srv.info -> servers addresses and ports

client data

IP:PORT
NAME
UUID (HASH) 

messaging data

PORT
NAME
UUID (HASH)
Key (base64)