#! /bin/bash

USAGE="$0 SOURCE_FILE MSG_SIZE MSG_COUNT

with:
	SOURCE_FILE the file from which the random binary is read
	MSG _SIZE the size in characters of each message
	MSG _COUNT the number of messages produced in a file
"

SOURCE_FILE=$1
MSG_SIZE=$2
MSG_COUNT=$3

if [ -z $SOURCE_FILE ] || [ -z $MSG_SIZE ] || [ -z $MSG_COUNT ]
then
	echo 'ERROR: Missing argument'
	echo $USAGE
	exit 1
fi

base64 -w $MSG_SIZE $SOURCE_FILE | head -n $MSG_COUNT | {

	i=1
	while read line
	do

		sha=$(echo $line | sha512sum | cut -d ' ' -f 1)
		echo "$i|$sha|$line"
		i=$(($i + 1))

	done
}