#!/bin/bash

## zOTP Bash Demo for making a 6 digit OTP using Blake2 and being valid for 10 minutes

## Usage:
##   ./demo-makeotp.sh "{string-unique-to-user}" {otp}

declare thesalt="zOTP by Ze'ev Schurmann"

source zotp.inc.sh

if [[ -z "${1}" ]] || [[ -z "${2}" ]]; then
  echo "Usage:" >&2
  echo "  $0 \"{string-unique-to-user}\" {otp}" >&2
  exit 1
fi

declare theseed="${1}"

if testOTP ${2} 10 b2 q; then
  echo "OTP is valid..."
else
  echo "OTP is invalid or expired..."
fi