added rand function

app/utilities/utilities.go

@@ -2,8 +2,11 @@ package utilities
 
 import (
 	"fmt"
+	"math/rand"
 	"net"
 	. "node/types"
+	"strconv"
+	"time"
 )
 
 func PrintTransaction(trans Transaction) {
@@ -115,4 +118,10 @@ func TranslateMessageToTransaction(mess Message) Transaction {
 	newTrans.Amount = body["amount"].(string)
 
 	return newTrans
+
+}
+
+func RandomString() string {
+	r := rand.New(rand.NewSource(time.Now().UnixNano()))
+	return strconv.Itoa(r.Int())
 }