steganograph 0.0.14

Head a file in img and extracted without chnaging the image size and you can protect your file with a password

Introduction

I created this package to embed a data file into a image file by steganography technique.
The package use sha512(key) to encrypt data before embedded it in the image.
This package same the data file in the LSB of the color bytes, so the average modification of the pixel is around 1/128=0.78%, so is hard to detect this modification by necked eye.
The size of the image before and after data embedding is almost the same. and this package embed the data, the file name and its extension to be extracted correctly

The package use the below libraries:
hashlib, imageio, numpy, os, re

Installation

You can install the package by the pip command below

pip install steganograph==0.0.12

How to use the package

Import libraries

import imageio.v3 as iio
import numpy as np

from steganograph import *

Test embedding and extract a text file into an image.

Path of the files and the key of cryptography

img_path = r'in/image_in.png'
img_path_out = r'out/image_out_txt.png'
file_path = r'in/Test_txt_file.txt'
file_folder_out = 'out/'
key = 'Test*123'

Embed data in the image

img_path_out = Embed_data_in_img(
    img_path=img_path,
    img_path_out=img_path_out,
    file_path=file_path,
    key=key)

out/image_out_txt.png is saved successfully

Extract data from the image and save to a file

extract_data_img_save_file(
    img_path_out=img_path_out, 
    file_folder=file_folder_out, 
    key=key)

out/Test_txt_file_out.txt is written successfully





'out/Test_txt_file_out.txt'

Compare the original and extracted text files

with open(r'in/Test_txt_file.txt', 'r') as f:
    file_txt_in = f.read()
    f.close()
with open(r'out/Test_txt_file_out.txt', 'r') as f:
    file_txt_out = f.read()
    f.close()
file_txt_in == file_txt_out

True

The original and the extracted text files are the same

Compare the text content by print of the original and the extracted text

print(file_txt_in)

Below an example of text file that we can head in the image file

Bitcoin Address
13daa8SYB8L5b8hcrkBfABskDzju53A3PR
Private Key
L58FrKEB6p9EMdBWsG5njdLVRnafUJHff3Xz3uy2VMo2GLJU4PAG

My PW: JQSqju*/66587sa

print(file_txt_out)

Below an example of text file that we can head in the image file

Bitcoin Address
13daa8SYB8L5b8hcrkBfABskDzju53A3PR
Private Key
L58FrKEB6p9EMdBWsG5njdLVRnafUJHff3Xz3uy2VMo2GLJU4PAG

My PW: JQSqju*/66587sa

---

The original text and the extracted are the same

The original image vs the modified one

Original image

Image Image with data embedded

Test embedding and extract a img file into an image.

Path of the files and the key of cryptography

img_path = r'in/image_in.png'
img_path_out = r'out/image_out_img.png'
file_path = r'in/VeKings_NFT.png'
file_folder_out = 'out/'
key = 'Test*123'

Embed data in the image

img_path_out = Embed_data_in_img(
    img_path=img_path,
    img_path_out=img_path_out,
    file_path=file_path,
    key=key)

out/image_out_img.png is saved successfully

Extract data from the image and save to a file

extract_data_img_save_file(
    img_path_out=img_path_out, 
    file_folder=file_folder_out, 
    key=key)

out/VeKings_NFT_out.png is written successfully





'out/VeKings_NFT_out.png'

Compare the original and extracted images

file_img_in = iio.imread(r'in/VeKings_NFT.png')
file_img_out = iio.imread(r'out/VeKings_NFT_out.png')
result = np.array_equal(file_img_in, file_img_out)

Original image

Image Image with data embedded

The original image vs the modified one

Original image

Image Image with data embedded