Binary file to multiple QR code image generation and validation (dependencies: qrencode & zbarimg). It takes one file name as the first command-line argument. Second argument is optional which sets how many characters you need to embed in each QR image (default: 1000).

make_qr.sh

#!/bin/bash

input_file_name="$1"
base64_file_name="__out.b64"
dir="_qr"

mkdir -p $dir

max_length=${2:-1000}

echo QR Code generation is in process...
echo

base64 -w0 $input_file_name > $base64_file_name

char_count=$(($(wc -c $base64_file_name | cut -d' ' -f1)+2400))

i=0
k=0

while (( $i < $char_count+1 )); do

	k=$(($k+1))

	content=$(dd skip=$i count=$max_length bs=1 if=$base64_file_name 2>&-)

	qrencode "$(echo -n $content)" -o ./$dir/qr_$k.png

	if (( ${#content} < $max_length )); then
		break
	fi

	i=$(($i+$max_length))

done

echo $char_count characters have been embeded in $k QR code image files.
echo
echo Output directory: $(pwd)/$dir/
echo
echo Validating generated QR codes...
echo

echo -n > $input_file_name.b64

j=1

while (( $j < $k+1 )); do

	content=$(zbarimg -q --raw ./$dir/qr_$j.png)

	if [[ $max_length != $(echo -n $content | wc -c) && $j < $k ]]; then
		echo Not matching: ./$dir/qr_$j.png - truncated to $max_length characters
		echo
		content=$(echo -n $content | head -c $max_length)
	fi

	echo -n $content >> $input_file_name.b64
	
	j=$(($j+1))
done

r1=$(sha1sum $base64_file_name)
r2=$(sha1sum $input_file_name.b64)

echo $r1
echo $r2
echo
r1=$(echo -n $r1 | cut -d' ' -f1)
r2=$(echo -n $r2 | cut -d' ' -f1)

if [ "$r1" = "$r2" ]; then
	echo Validation Successful.
else
	echo Validation Failed!
	rm -r ./$dir/qr_*
	rm -r ./$dir
fi

rm $base64_file_name
rm $input_file_name.b64