alexturner2000 / cryptography-client-server

cryptography-client-server

program to establish a connection that sends secure application messages from a client to a server using the Python

packages

pip install rsa
pip install socket

Order of opperation:

1. Keys must be generated a) run Client Side/client-rsa-gen.py b) run Server Side/server-rsa-gen.py NOTE:

   • Private keys are stored in each directory corresponding to the client and server.
   • All public keys generated are in the Public Keys/ directory
   • Every key file will be stored as a .PEM file, and will NOT need to be regenerated after every file exchange

2. File transfer scripts must be run in order a) run server.py b) run client.py

3. The message transmission works both ways, but in sequence i.e client -> server -> client -> server ...

   SENDING

   • signes the digest with the clients private key
   • uses the servers public key to encrypt the clients secret key

   RECEIVING

   • decrypts both the message and digital signature with the servers private key
   • verifies the digital signature with the clients public key
   • prints the message in terminal