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|
#!/bin/bash
# CryptoSteg
# Encrypt files and steg them to pictures
# Variables
ENCRYPT=$"gpg -c"
DECRYPT=$"gpg"
NOW=$(date +"%m_%d_%Y")
# Clear the terminal
tput clear
# Prevent pinentry trouble with pinentry display
echo pinentry-program /usr/bin/pinentry-curses >> ~/.gnupg/gpg-agent.conf
echo RELOADAGENT | gpg-connect-agent
# Welcome
printf "\033[1;32mWelcome to CryptoSteg\n Stegagnograph and Encrypt data\n Made Simple\033[0m%s\n"
# Request the user to install or not the needed software
while true; do
read -p "Do you need to install steghide and gpg to run CryptoSteg? Y/n " yn
case $yn in
[Yy]* ) # Install needed software for the operating system
command_exists () {
type "$1" &> /dev/null ;
}
# For Debian / Ubuntu / Trisquel / gNewSense and derivatives
if command_exists apt-get ; then
sudo apt-get install steghid gnupg ;
fi
# For Archlinux / Parabola and derivatives
if command_exists pacman ; then
sudo pacman -Sy steghide gnupg ;
fi
# For Android / Cyanogen / Replicant and derivatives
if command_exists apt ; then
sudo apt install steghide gnupg ;
fi
# For Fedora and derivatives
if command_exists dnf ; then
sudo dnf install -y steghide gnupg ;
fi
# For RedHat / CentOS and derivatives
if command_exists yum ; then
sudo yum install -y steghide gnupg ;
fi
if command_exit pkg ; then
sudo pkg install -y steghide gnupg ;
fi
break;;
[Nn]* ) break ;;
* ) echo "Please answer Yes or no. ";;
esac
done
# Request the user to create an encrypted key
while true; do
read -p "Do you need to create an encrypted key? Y/n " yn
case $yn in
[Yy]* ) # creating a key
printf "/!\ If you forget your passphrase, the key cannot be used\n and any data encrypted using that key will be lost.\n"
gpg2 --full-gen-key
break;;
[Nn]* ) break;;
* ) echo "Please answer Yes or no.";;
esac
done
# Encrypt or Decrypt?
while true; do
read -p "Do you which to encrypt or decrypt data? Encrypt/Decrypt " ed
case $ed in
[Ee]* ) # Encrypt - Request the user where and which file he wish to encrypt
printf "Which file do you wish to encrypt?\n"
printf "Please provide its place and name like /home/user/file\n"
read FILE
# Encrypt
$ENCRYPT $FILE
# Request the user which picture he want to use
printf "Which picture do you wish to use?\n"
printf "Please provide its place and name like /home/user/picture\n"
read PICTURE
# Grab and Steg the file
steghide embed -cf $PICTURE -ef $FILE.gpg
printf "Well done, $PICTURE now contain your secret safe\n"
break;;
[Dd]* ) # Decrypt - Request the user where and which file he wish to decrypt
printf "Which picture do you want to extract?\n"
printf "Please provide its place and name like /home/user/picture\n"
read PICTURE
# Encrypt
steghide extract -sf $PICTURE
$DECRYPT *.gpg
printf "Well done, your file is now human readable\n"
break;;
* ) echo "Please answer Encrypt or Decrypt.";;
esac
done
exit
|
