Δικαίωμα στην σιωπή... 🤫

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A tool that embeds arbitrary files into a PNG image with optional password protection, preserves the image as a valid PNG, supports full reversible extraction, and can safely transport the result through text-only channels via Base64 encoding.

Required:

• Debian/Ubuntu:

apt install libssl-dev

• Fedora/RHEL/CentOS:

dnf install openssl-devel

• Arch/Manjaro:

pacman -S openssl

• Slackware:

The King already has it in the installation, but just in case: slackpkg install openssl

• openSUSE:

zypper install libopenssl-devel

• Alpine:

apk add openssl-dev

• Gentoo:

emerge dev-libs/openssl

• Void:

xbps-install openssl-devel

Compile:

gcc -O2 -s -o Shh shh.c -lssl -lcrypto

Usage:

Example to hide the secret.html file in the sbodog.png file:
./Shh hide sbodog.png secret.html output

Create: output.png + (base64) output.txt

To revert back:
./Shh decode output.txt extracted.html

or

./Shh decode output.png extracted.html

Password is optional else just hit enter.

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You can hide everything in your .png:

1. PDF
2. ZIP/TAR
3. MP3/MP4
4. EXE
5. Other PNG/JPG
6. Python scripts
7. bitcoin_wallet.dat
8. etc...

But you can not upload the modified output.png on web-hosts that re-encoding images, because your hidden data will be lost.
You can upload the base64 output.txt in a pastebin or in file sever or send it via email etc...