diff --git a/sign.go b/sign.go
index f729b5b..1805e2a 100644
--- a/sign.go
+++ b/sign.go
@@ -40,38 +40,3 @@ func CheckSign(sign_str, data, salt string) bool {
 	}
 	return false
 }
-
-/**
- * 解密
- */
-func GetOrgData(res *Response) (string, error) {
-
-	res_data := res.GetData()
-
-	if res_data == "" {
-
-		return "", errors.New("未收到收据")
-	}
-
-	time_int64, err := strconv.ParseInt(res.GetTime(), 10, 64)
-	if err != nil {
-		return "", err
-	}
-
-	now_int64 := time.Now().Unix()
-
-	if now_int64-time_int64 > 10 || time_int64-now_int64 > 10 {
-		//时间误差前后10秒，返回
-		return "", errors.New("返回时间错误")
-	}
-
-	check_sign := CheckSign(res.GetSign(), res_data, res.GetTime())
-	if !check_sign {
-		return "", errors.New("返回数据签名错误")
-	}
-
-	//解密
-	res_data_de := crypter.DesDe(res_data, DES_KEY)
-
-	return res_data_de, nil
-}