===================================================================
RCS file: /cvsrepo/anoncvs/cvs/src/usr.bin/ssh/ssh-sk.h,v
retrieving revision 1.1
retrieving revision 1.2
diff -u -r1.1 -r1.2
--- src/usr.bin/ssh/ssh-sk.h	2019/10/31 21:16:20	1.1
+++ src/usr.bin/ssh/ssh-sk.h	2019/10/31 21:22:01	1.2
@@ -1,4 +1,4 @@
-/* $OpenBSD: ssh-sk.h,v 1.1 2019/10/31 21:16:20 djm Exp $ */
+/* $OpenBSD: ssh-sk.h,v 1.2 2019/10/31 21:22:01 djm Exp $ */
 /*
  * Copyright (c) 2019 Google LLC
  *
@@ -20,6 +20,9 @@
 
 struct sshbuf;
 struct sshkey;
+
+/* Version of protocol between ssh-agent and ssh-sk-helper */
+#define SSH_SK_HELPER_VERSION	1
 
 /*
  * Enroll (generate) a new security-key hosted private key via the specified