diff --git a/algo/kgm/pc_kugou_db/cipher_default.go b/algo/kgm/pc_kugou_db/cipher_default.go
new file mode 100644
index 0000000..2e1137d
--- /dev/null
+++ b/algo/kgm/pc_kugou_db/cipher_default.go
@@ -0,0 +1,7 @@
+//go:build !windows
+
+package pc_kugou_db
+
+func CachedDumpEKey(dbPath string) (map[string]string, error) {
+	return nil, nil
+}
diff --git a/algo/kgm/pc_kugou_db/cipher.go b/algo/kgm/pc_kugou_db/cipher_windows.go
similarity index 100%
rename from algo/kgm/pc_kugou_db/cipher.go
rename to algo/kgm/pc_kugou_db/cipher_windows.go
diff --git a/algo/kgm/pc_kugou_db/cipher_test.go b/algo/kgm/pc_kugou_db/cipher_windows_test.go
similarity index 100%
rename from algo/kgm/pc_kugou_db/cipher_test.go
rename to algo/kgm/pc_kugou_db/cipher_windows_test.go