keep sign_type in verify? method, let generate method know it
keep sign_type in verify? method, let generate method know it

jasl/alipay,liupeng/alipay,lostpupil/alipay,chloerei/alipay,denny2trasy/alipay,greatbody/alipay,yumikohey/alipay,hotvulcan/alipay,logchi/alipay,yijiasu/alipay,FX-HAO/alipay,serco-chen/alipay