#!/usr/bin/env bash

site=$1
limit=$2
if [ $# -lt 1 ]; then
    read  -ep "Site: " site
fi
if [ $# -lt 2 ]; then
	limit=20
fi
read -sep "Salt: " salt

saltresult=`echo $salt | shasum -a 512`
if [ "${saltresult:0:128}" == "8309357f48bd4cf5563dce72d4c0791067f9c4e8c7f3b85c800520c419f0525f4d5a080bed5941d267b3cfdb06250ae236f9ff44f6c12e3c9713e2e0a662ed7e" ]
then
    result=`echo "$site$salt" | shasum`
    echo
    echo ${result:0:$limit}
else
    echo "invalid salt!"
fi