Steganography - PNGidden

Hide text messages in PNG files using the LSB – least significant bit.

In this way, we change the lowest bits in the image to be our message – and we’ll have an almost imperceptible change on the actual way the image looks.

PNG file structure

First 8 bytes:

89 50 4E 47 0D 0A 1A 0A               |   PNG File Signature

Last 12 bytes:

00 00 00 00 49 45 4e 44 ae 42 60 82   |   ....IEND.B`.|

File Chunks

IHDR = Header

PLTE = Palette Table

IDAT = Image Data (Pixels)

IEND = End of file

Setup & Requirements

• Install python 3.10.0 or upper from here

• Make sure your version is 3.10.0 or upper

python --version

• Install pip prerequisites

pip install -r requirements.txt

• You can also run my setup file to verify everything works:

python setup.py

Usage

• Windows 10/11:

python PNGidden.py

• Linux or Mac OS:

python3 PNGidden.py

© 2022 Daniel Kirshner. All rights reserved.