pushkarkadam / spacecomms

A project for NASA International Space App Challenge 2020

Spacecomms

This is a concept of transmitting image as text file with unique signature of each file.

The code is developed as a part of NASA Space App challenge 2020.

Installations

Install virtual environment: pip install virtualenv

If there are some errors while installing virtualenv try: pip install virtualenv --ignore-installed

Once inside the root project directory create a virtual environment:

MAC Instructions:

virtualenv venv

Activate virtualenv: source venv/bin/activate

Windows Instructions:

Type to create a virtual environment: python -m vevn venv

Type to activate virtual environment: venv\Scripts\activate

Install dependencies

pip install -r requirements.txt

Usage

There are two images of Opportunity rover in images directory.

Call the functions in python terminal:

• Make sure you have activated virtual environment.

• Import the spacecomms python module: from spacecomms.image_comms import *

Example

The following code reads the image oppy.jpg from images directory and stores the signature and text files in image_storage/encrypted_files by default.

You can provide any path you want. Use help() with the funtion name while in the python console.

Example: help(encypt_image)

OUTPUT:

Help on function encrypt_image in module spacecomms.image_comms:

encrypt_image(image, directory='image_storage/encrypted_files')
    Creates text files out of the images and a signature using encryption.
    Every channel of the image is stored in a separate text file.
    The output will be stored in the `directory` which is default to `image_storage/encrypted_files`.
    
    :param image: Image to be encrypted.
    :param derectory: Path to store the files (DEFAULT="image_storage/encrypted_files").
(END)

Press q to exit.

Encryption:

from spacecomms.image_comms import *

encrypt_image("images/oppy.jpg")

Decryption:

decrypt_image("image_storage/encrypted_files")