#!/bin/bash

# Script requires Java8, ImageMagic and FinalCrypt

export basename="testimage"

export finalcrypt="/home/ron/finalcrypt.jar"
export imagekey="${basename}key"
export password="abc123"
export image1="${basename}1.bmp"
export image2="${basename}2.bmp"
export imagesize="128x128"
export bgcolor="white"

rm -v ${basename}* # Never add a space in between the var and the "*" or loose all files in the current dir

export font="helvetica"
export pointsize=96

export text1="A"; export text1x=10; export text1y=90
export text2="B"; export text2x=50; export text2y=110

# Creating the images
convert -size "${imagesize}" "xc:${bgcolor}" "${image1}"
convert -size "${imagesize}" "xc:${bgcolor}" "${image2}"

# Drawing the images
convert "${image1}" -font "${font}" -pointsize ${pointsize} -draw "text ${text1x},${text1y} 'A'" "${image1}"
convert "${image2}" -font "${font}" -pointsize ${pointsize} -draw "text ${text2x},${text2y} 'B'" "${image2}"

# Make copies
cp "${image1}" "${image1%.bmp}.orig.bmp"
cp "${image2}" "${image2%.bmp}.orig.bmp"

# Create Key
java -cp ${finalcrypt} rdj.CLUI --create-keyfile -K "${imagekey}" -S "$(stat -c "%s" "${image1}")"; # Key Size equal to target file

# Encrypting images with single key
java -cp ${finalcrypt} rdj/CLUI --disable-MAC --encrypt --password "${password}" -k "${imagekey}" -t "${image1}"
java -cp ${finalcrypt} rdj/CLUI --disable-MAC --encrypt --password "${password}" -k "${imagekey}" -t "${image2}"

# Make copies of the encrypted files
cp "${image1}.bit" "${image1}.orig.bit"
cp "${image2}.bit" "${image2}.orig.bit"

# Cross Encrypting one with the other
java -cp ${finalcrypt} rdj/CLUI --disable-MAC --encrypt --password "${password}" -k "${image1}.bit" -t "${image2}.bit"
java -cp ${finalcrypt} rdj/CLUI --disable-MAC --encrypt --password "${password}" -k "${image2}" -t "${image1}.bit"

# Make copies of the cross encrypted files
cp "${image1}" "${image1%.bmp}.cross.enc.orig.bmp"
cp "${image2}" "${image2%.bmp}.cross.enc.orig.bmp"

# Cross Encrypting one with the other
# java -cp ${finalcrypt} rdj/CLUI --disable-MAC --encrypt --password "${password}" -k "${image2}" -t "${image1}"
# java -cp ${finalcrypt} rdj/CLUI --disable-MAC --encrypt -k "${image1}.bit" -t "${image2}"

# Recover bmp header (only when viewing with bmp viewer. Do not recover bmp headers when viewing with veles!)
# Get the header imagesize
# export headerversion=`exiftool image1.orig.bmp | grep -i "BMP Version" | awk '{ print $5 }'`
# export headersize=`wget -qO- 'https://en.wikipedia.org/wiki/BMP_file_format#Bitmap_file_header' | html2text  | grep -E "${headerversion}" | head -1 | awk '{ print $1 }'`
#echo "Restoring headerversion: ${headerversion} with headersize: ${headersize}"
# dd if="${image1%.bmp}.orig.bmp" of="${image1}" bs=${headersize} count=1 conv=notrunc
# dd if="${image2%.bmp}.orig.bmp" of="${image2}" bs=${headersize} count=1 conv=notrunc

#gwenview "${image1%.bmp}.orig.bmp" "${image2%.bmp}.orig.bmp" "${image1}" "${image2}" &
#veles "${imagekey}" "${image1}" "${image2}" &