diff --git a/db.go b/db.go
index d81aaf7..5ae4bd1 100644
--- a/db.go
+++ b/db.go
@@ -37,7 +37,7 @@ func (m *TransactionDB) close() {
 	m.h = nil //clear it, very important to prevent multiple opening
 }
 
-func (m *TransactionDB) addRequest(r *http.Request) (row LeanworkIn, err error) {
+func (m *TransactionDB) addRequest(r *http.Request, md5key string) (row LeanworkIn, err error) {
 	if err = m.conn(Config); err != nil {
 		return row, err
 	}
@@ -54,16 +54,16 @@ func (m *TransactionDB) addRequest(r *http.Request) (row LeanworkIn, err error)
 	orderCurrency := r.FormValue("orderCurrency")
 	customerId := r.FormValue("customerId")
 	sign := r.FormValue("sign")
-	valid := isLeanworkFormValid(r.Form)
+	valid := isLeanworkFormValid(r.Form, md5key)
 	ip4 := getClientIPLong(r)
 
-	insForm, err := m.h.Prepare("INSERT INTO leanworkIn (pickupUrl, receiveUrl, signType, orderNo, orderAmount, orderCurrency, customerId, sign, valid, ip4) VALUES(?,?,?,?,?,?,?,?,?,?)")
+	insForm, err := m.h.Prepare("INSERT INTO leanworkIn (pickupUrl, receiveUrl, signType, orderNo, orderAmount, orderCurrency, customerId, sign, valid, ip4, md5key) VALUES(?,?,?,?,?,?,?,?,?,?,?)")
 	if err != nil {
 		log.Printf("Failed to prepare SQL statment for insert")
 		return
 	}
 
-	res, err := insForm.Exec(pickupUrl, receiveUrl, signType, orderNo, orderAmount, orderCurrency, customerId, sign, valid, ip4)
+	res, err := insForm.Exec(pickupUrl, receiveUrl, signType, orderNo, orderAmount, orderCurrency, customerId, sign, valid, ip4, md5key)
 	if err != nil {
 		log.Printf("Error inserting leanworkIn with orderNo =%s \n", orderNo)
 		return
@@ -85,6 +85,7 @@ func (m *TransactionDB) addRequest(r *http.Request) (row LeanworkIn, err error)
 	row.Sign = sign
 	row.Valid = valid
 	row.Ip4 = ip4
+	row.MD5Key = md5key
 	log.Println("INSERT[" + strconv.FormatInt(row.Id, 10) + "]: customerId: " + customerId + " | orderAmount: " + orderCurrency + " " + orderAmount)
 
 	return row, err