diff --git a/main.go b/main.go
index edfebc2..ae8785b 100644
--- a/main.go
+++ b/main.go
@@ -25,11 +25,12 @@ func main() {
 <Event><![CDATA[CLICK]]></Event>
 <EventKey><![CDATA[V1001_TODAY_MUSIC]]></EventKey>
 </xml>`
-	m := Decode(txt)
 	t := Encode(msg)
+	m := Decode(t)
+
 	fmt.Println(t)
 	fmt.Println(m)
-	fmt.Println(t == txt)
+
 	fmt.Println(m == msg)
 
 	return
diff --git a/messageEncrypt.go b/messageEncrypt.go
index 0a6b932..b792969 100644
--- a/messageEncrypt.go
+++ b/messageEncrypt.go
@@ -8,12 +8,10 @@ import (
 	"fmt"
 )
 
-var random16 []byte
-
 //Encode convert a xml sequence into encrypted message
 func Encode(s string) string {
 
-	d := aesEncryptMsg(random16, []byte(s), APIConfig.Appid, getAesEncryptKey())
+	d := aesEncryptMsg(random16Byte(), []byte(s), APIConfig.Appid, getAesEncryptKey())
 	r := base64.StdEncoding.EncodeToString(d)
 	fmt.Println(r)
 	return r
@@ -24,11 +22,8 @@ func Decode(s string) string {
 
 	r, _ := base64.StdEncoding.DecodeString(s)
 
-	r16, raw, err := aesDecryptMsg([]byte(r), APIConfig.Appid, getAesEncryptKey())
-	random16 = make([]byte, 16)
-	copy(random16, r16)
+	_, raw, err := aesDecryptMsg([]byte(r), APIConfig.Appid, getAesEncryptKey())
 	if err == nil {
-		fmt.Println(string(raw))
 		return string(raw)
 	}
 	return ""