improve print

sign.go

@@ -21,6 +21,11 @@ type tokenData struct {
 	Payload   []byte `codec:"p"`
 }
 
+type tokenPrint struct {
+	Signature string      `codec:"signature"`
+	Payload   interface{} `codec:"payload"`
+}
+
 type TokenCoder struct {
 	valid   bool
 	privKey ed25519.PrivateKey
@@ -51,7 +56,7 @@ func (tc TokenCoder) SeedHex() string {
 }
 
 func Format(token string) (txt string, err error) {
-	var payload interface{}
+	var tp tokenPrint
 	var data []byte
 	data, err = b64.DecodeString(strings.TrimFunc(token, trim))
 	if err != nil {
@@ -74,16 +79,14 @@ func Format(token string) (txt string, err error) {
 		return
 	}
 
+	tp.Signature = hex.EncodeToString(td.Signature)
 	buf.Reset()
 	buf.Write(td.Payload)
 
-	err = dec.Decode(&payload)
-
+	err = dec.Decode(&tp.Payload)
 	buf.Reset()
-	buf.Write([]byte("SIGNATURE=" + hex.EncodeToString(td.Signature) + "\n"))
-
 	enc := codec.NewEncoder(buf, &jHandle)
-	err = enc.Encode(payload)
+	err = enc.Encode(tp)
 	txt = buf.String()
 	return
 }