#!/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}"

declare thesalt="zOTP by Ze'ev Schurmann"

source zotp.inc.sh

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

declare theseed="${1}"

variablename="$(newOTP b2)"

echo "OTP is ${variablename} it will expire at $(date -d "+10 minutes")"