diff --git a/pkg/provider/crypto/file.go b/pkg/provider/crypto/file.go
index 0ccdd89..d37ce51 100644
--- a/pkg/provider/crypto/file.go
+++ b/pkg/provider/crypto/file.go
@@ -155,11 +155,7 @@ func (f *file) Readdir(n int) ([]fs.FileInfo, error) {
 	}
 	fio := make([]fs.FileInfo, len(fis))
 	for i, fi := range fis {
-		p, err := f.fs.decPath(fi.Name())
-		if err != nil {
-			continue
-		}
-		fio[i] = dir{FileInfo: fi, name: p}
+		fio[i] = dir{FileInfo: fi, name: f.fs.decPath(fi.Name())}
 	}
 	return fio, nil
 }
diff --git a/pkg/provider/crypto/fs.go b/pkg/provider/crypto/fs.go
index 05ff8ac..f11839f 100644
--- a/pkg/provider/crypto/fs.go
+++ b/pkg/provider/crypto/fs.go
@@ -7,7 +7,6 @@ import (
 	"io/fs"
 	"os"
 	"path/filepath"
-	"runtime"
 	"strings"
 )
 
@@ -34,7 +33,7 @@ func NewFS(fs provider.FS, key []byte) (*FS, error) {
 	}, nil
 }
 
-func (fs *FS) encPath(path string) (n string, err error) {
+func (fs *FS) encPath(path string) string {
 	parts := strings.Split(path, "/")
 	cparts := make([]string, len(parts))
 	for i, p := range parts {
@@ -45,11 +44,10 @@ func (fs *FS) encPath(path string) (n string, err error) {
 			fs.cbc.encrypt([]byte(p)),
 		)
 	}
-	n = filepath.Join(cparts...)
-	return
+	return filepath.Join(cparts...)
 }
 
-func (fs *FS) decPath(path string) (n string, err error) {
+func (fs *FS) decPath(path string) string {
 	parts := strings.Split(path, "/")
 	pparts := make([]string, len(parts))
 	for i, p := range parts {
@@ -57,8 +55,7 @@ func (fs *FS) decPath(path string) (n string, err error) {
 			fs.cbc.decrypt([]byte(p)),
 		)
 	}
-	n = filepath.Join(pparts...)
-	return
+	return filepath.Join(pparts...)
 }
 
 func (fs *FS) name(p string) string {
@@ -66,28 +63,16 @@ func (fs *FS) name(p string) string {
 }
 
 func (fs *FS) Stat(p string) (fs.FileInfo, error) {
-	c, err := fs.encPath(p)
-	if err != nil {
-		return nil, err
-	}
-	fi, err := fs.fs.Stat(c)
+	fi, err := fs.fs.Stat(fs.encPath(p))
 	return stat{FileInfo: fi, name: fs.name(p)}, err
 }
 
 func (fs *FS) Remove(p string) error {
-	c, err := fs.encPath(p)
-	if err != nil {
-		return err
-	}
-	return fs.fs.Remove(c)
+	return fs.fs.Remove(fs.encPath(p))
 }
 
 func (fs *FS) Open(p string) (provider.File, error) {
-	c, err := fs.encPath(p)
-	if err != nil {
-		return nil, err
-	}
-	f, err := fs.fs.Open(c)
+	f, err := fs.fs.Open(fs.encPath(p))
 	if err != nil {
 		return nil, err
 	}
@@ -95,11 +80,7 @@ func (fs *FS) Open(p string) (provider.File, error) {
 }
 
 func (fs *FS) OpenFile(p string, flags int, mode os.FileMode) (provider.File, error) {
-	c, err := fs.encPath(p)
-	if err != nil {
-		return nil, err
-	}
-	f, err := fs.fs.OpenFile(c, flags, mode)
+	f, err := fs.fs.OpenFile(fs.encPath(p), flags, mode)
 	if err != nil {
 		return nil, err
 	}
@@ -107,11 +88,7 @@ func (fs *FS) OpenFile(p string, flags int, mode os.FileMode) (provider.File, er
 }
 
 func (fs *FS) MkdirAll(p string, mode os.FileMode) error {
-	c, err := fs.encPath(p)
-	if err != nil {
-		return err
-	}
-	return fs.fs.MkdirAll(c, mode)
+	return fs.fs.MkdirAll(fs.encPath(p), mode)
 }
 
 func (fs *FS) Root() string {
@@ -123,7 +100,5 @@ func (fs *FS) Fstat(_ uintptr) (int64, error) {
 }
 
 func (fs *FS) Close() error {
-	fs.key = nil
-	runtime.GC()
 	return nil
 }