diff --git a/drivers/local/meta.go b/drivers/local/meta.go
index efaad4c9..e15d50c5 100644
--- a/drivers/local/meta.go
+++ b/drivers/local/meta.go
@@ -8,6 +8,7 @@ import (
 type Addition struct {
 	driver.RootPath
 	Thumbnail  bool   `json:"thumbnail" required:"true" help:"enable thumbnail"`
+	Sign       bool   `json:"sign" default:"false" required:"false" help:"enable sign"`
 	ShowHidden bool   `json:"show_hidden" default:"true" required:"false" help:"show hidden directories and files"`
 	MkdirPerm  string `json:"mkdir_perm" default:"777"`
 }
diff --git a/internal/sign/storage.go b/internal/sign/storage.go
index 94e24673..8c5129e6 100644
--- a/internal/sign/storage.go
+++ b/internal/sign/storage.go
@@ -5,14 +5,18 @@ import (
 	json "github.com/json-iterator/go"
 )
 
+type signType struct {
+	Sign bool `json:"sign"`
+}
+
 func IsStorageSigned(rawPath string) bool {
+	var jsonData signType
 	storage := op.GetBalancedStorage(rawPath).GetStorage()
-	var jsonData = map[string]interface{}{}
 	err := json.Unmarshal([]byte(storage.Addition), &jsonData)
 	if err != nil {
 		return false
 	}
-	if jsonData["sign"] == "true" {
+	if jsonData.Sign == true {
 		return true
 	}
 	return false
diff --git a/public/dist/README.md b/public/dist/README.md
deleted file mode 100644
index d8709fb5..00000000
--- a/public/dist/README.md
+++ /dev/null
@@ -1 +0,0 @@
-## Put dist of frontend here.
\ No newline at end of file