make ‘extract’ cmd stream its data directly to stdout

gzip

wbStego: 4bpp/8bpp BMP

openstego

tmp/steg*/*.bmp

4bpp/8bpp BMP

search.cpan.org/~nwclark/Acme-Steganography-Image-Png-0.06/Png.pm

registry.gimp.org/node/25988 - GIMP stego plugin

zsteg-mask: normalize all to white

stego by pixels of single color (hackquest on wiki)

advices on what tool to use

SilentEye

chunks length check, as in pngcheck

CLI: self-describe

+

auto pixel order for BMP

+

BMP

+

zlib

detect AES from punkroy.drque.net/PNG_Steganography/Steganography5.php

?

tobyinkster.co.uk/article/steg-encode/

+

Sieve of Eratosthenes: wiki.cedricbonhomme.org/security:steganography