pngchat

Hide messages in the PNG file.

The intent of this little project is to learn how to encode PNG file and add some messages inside it

Idea come from PNGme: An Intermediate Rust Project

Goal

Making a command line program that lets you hide secret messages in PNG files.

The main tasks of pngchat are:

• Encode a message into a PNG file
• Decode a message stored in a PNG file
• Remove a message from a PNG file
• Print a list of PNG chunks that can be searched for messages

Getting Started

Note: If you don’t have Rust yet, I recommend you use rustup to manage your Rust installation. The official rust guide has a wonderful section on getting started.

First you need to make sure your rust toolchain is up to date. For the latest run

rustup update

Then you need to git clone the repo and then cargo install local binary

git clone https://github.com/Azathoth1729/pngchat.git
cd pngchat
cargo install --path .

Now you should be able to run commands pngchat directly on your terminal like:

pngchat 1.0.1
Azathoth
Hide messages in the PNG file

USAGE:
    pngchat <SUBCOMMAND>

OPTIONS:
    -h, --help       Print help information
    -V, --version    Print version information

SUBCOMMANDS:
    decode    Decode the message in the specfic PNG file according to a certian chunk type
    encode    Encode the message in the specfic PNG file with a  certian type
    help      Print this message or the help of the given subcommand(s)
    print     Print a list of PNG chunks that can be searched for messages
    remove    Remove a message according to certian chunk type

Uasge

# Encodes a message into a PNG file and saves the result
pngchat encode ./test.png ruSt "This is a hidden message"

# Searches for a message hidden in a PNG file and prints the message if one is found
pngchat decode ./test.png ruSt

# Removes a chunk from a PNG file and saves the result
pngchat remove ./test.png ruSt

# Prints all of the chunks in a PNG file
pngchat print ./test.png

Links

See the PNG file structure spec for more details about how PNG file structured

Uninstalling

Simply run if you install the binary from cargo install

cargo uninstall pngchat

License: MIT