Accord

Secure and anonymous communication between multiple people over a network

Cryptography features implemented using Pycryptodome: https://pycryptodome.readthedocs.io/en/latest/src/signature/signature.html

Running the Program

Dependencies

• pycryptodome
• pyfiglet

Scripts

• Direct Messaging: run script scripts/run.sh with the command
  ./run.sh [hostname] [server_port] [ca_port]
• Group Messaging: run script scripts/run_group.sh with the command
  ./run_group.sh [hostname] [server_port] [ca_port]
• Reseting keys and data base: run scrip scripts/reset.sh with the command
  ./reset.sh

General Use

In the /src folder you can find each of these command line programs

• Server.py: The server that relays messages and information between clients
  python3 Server.py [server_port]
• CA.py: The Certificate Authority that will create signatures for the user's public keys
  python3 CA.py [ca_port]
• Client.py: The main user interface. Here the client can create an account and loggin, as well as send and receive messages
  python3 CA.py [host_name] [server_port] [ca_port]

CA.py and Server.py need to be running before Client.py clients are added to the network.

Client.py command line interface

• :help for a list of commands
• NOTE: the > symbol must appear before writting a command (press enter if not present)
• NOTE: Contacts must be added before sending a message

Storage

The database and keys are stored locally, so some storage must be free for these to be saved.