diff --git a/protos/message.proto b/protos/message.proto
index 2e4a84b..21bee3c 100644
--- a/protos/message.proto
+++ b/protos/message.proto
@@ -87,6 +87,7 @@ message LoginRequest {
   OSLogin os_login = 12;
   string my_platform = 13;
   bytes hwid = 14;
+  string salt = 17;
 }
 
 message Terminal {
@@ -328,6 +329,7 @@ message CursorPosition {
 message Hash {
   string salt = 1;
   string challenge = 2;
+  bool support_controlling_salt = 3;
 }
 
 enum ClipboardFormat {