png-rusty

A toy project following the PNG ME project using the PNG specification.

Manipulate your PNG file to hide your data in a chunk of your desired type.

Commands

png-rusty encode ./dice.png <USER DEFINED CHUNK TYPE> "<MSG>"
png-rusty decode ./dice.png <USER DEFINED CHUNK TYPE>
png-rusty remove ./dice.png <USER DEFINED CHUNK TYPE>

Chunk type size is limited to 4 bytes, therefore 4 UTF-8 characters.

Example :
png-rusty encode ./dice.png ruSt "This is a secret message!
png-rusty decode ./dice.png ruSt
png-rusty remove ./dice.png ruSt
png-rusty print ./dice.png