PNG::re

PNG::re is a command-line utility for encoding and decoding hidden messages within PNG files.

Features

• Encode secret messages into PNG files
• Decode hidden messages from PNG files
• Remove encoded messages
• Print chunk information from PNG files
• Preserves original image quality and appearance

Installation

Clone the repository and navigate to the project directory

git clone https://github.com/RamiE965/pngre
cd pngre

Build using Make

Make

Usage

./pngre encode <image.png> <chunk-type> <message>    # Encode a message
./pngre decode <image.png> <chunk-type>              # Decode a message
./pngre remove <image.png> <chunk-type>              # Remove a message
./pngre print <image.png>                            # Print all "chunks"

Examples

# Encode message "Hello World!" with the chunktype "TEST"
./pngre encode image.png TEST "Hello World!"

# Decode the first message associated with the chunktype "TEST"
./pngre decode image.png TEST

# Remove the first message associated with the chunktype "TEST"
./pngre remove image.png TEST

# View all image Chunk information
./pngre print image.png

Testing

Run the test suite

./run_tests