feat: export generate key

License: MIT
Signed-off-by: Henrique Dias <hacdias@gmail.com>

settings/settings.go

@@ -1,6 +1,7 @@
 package settings
 
 import (
+	"crypto/rand"
 	"strings"
 
 	"github.com/filebrowser/filebrowser/v2/rules"
@@ -41,3 +42,15 @@ type Server struct {
 func (s *Server) Clean() {
 	s.BaseURL = strings.TrimSuffix(s.BaseURL, "/")
 }
+
+// GenerateKey generates a key of 256 bits.
+func GenerateKey() ([]byte, error) {
+	b := make([]byte, 64)
+	_, err := rand.Read(b)
+	// Note that err == nil only if we read len(b) bytes.
+	if err != nil {
+		return nil, err
+	}
+
+	return b, nil
+}