theovasi / cryptomsg

RSA encrypted chat application.

cryptoMsg

cryptoMsg is a command line tool that allows users to exchange encrypted messages using the RSA cryptosystem.

Prerequisites

Have Java Runtime Environment (JRE) and Java Development Kit (JDK) installed.

Usage

Create a local clone of the git repository:

git clone https://github.com/theovac/cryptoMsg/edit/master/README.md

Change directory to cryptoMsg/src:

cd cryptoMsg/src

Compile the source code:

javac Node.java

Run the program:

java Node or java Node verbose for execution with additional information logging.

After the above steps you will be prompted for a port on which the server will be instanciated. Make sure it is an unused port. Then, enter a remote server's IP address and port to connect to it.

License

This project is licensed under the MIT License - see the LICENSE file for details

cryptomsg's Issues

Can't handle messages with binary representation bigger than the public key's.

One possible fix would be hashing the message using MD5 that has a 128 bit representation or another hashing algorithm with a small bit representation. There would be no need to use a secure algorithm as we only use hashing to reduce message size.