#!/bin/sh

decrypt=0

case "$0" in
   *encrypt*)
      decrypt=0
      ;;
   *decrypt*)
      decrypt=1
      ;;
   *)
      printf "Who am I? I Don't understand my purpose.\n"
      exit 1
      ;;
esac

if [ $# -lt 1 ]; then
   printf "usage: $0 CRYPTKEY\n"
   exit 1
fi

if [ "$decrypt" = "1" ]; then
   exec openssl enc -aes-256-cbc -d -k $1
else
   exec openssl enc -aes-256-cbc -k $1
fi