use md5 plus unixtime to replace sha1
use md5 plus unixtime to replace sha1

liam-lai/ptt-alertor,meifamily/ptt-alertor,liam-lai/ptt-alertor,meifamily/ptt-alertor,meifamily/ptt-alertor,meifamily/ptt-alertor,liam-lai/ptt-alertor,liam-lai/ptt-alertor