===================================================================
RCS file: /cvsrepo/anoncvs/cvs/src/usr.bin/ssh/ssh-keysign.c,v
retrieving revision 1.67
retrieving revision 1.68
diff -u -r1.67 -r1.68
--- src/usr.bin/ssh/ssh-keysign.c	2021/07/05 01:16:46	1.67
+++ src/usr.bin/ssh/ssh-keysign.c	2021/11/10 06:25:08	1.68
@@ -1,4 +1,4 @@
-/* $OpenBSD: ssh-keysign.c,v 1.67 2021/07/05 01:16:46 dtucker Exp $ */
+/* $OpenBSD: ssh-keysign.c,v 1.68 2021/11/10 06:25:08 djm Exp $ */
 /*
  * Copyright (c) 2002 Markus Friedl.  All rights reserved.
  *
@@ -75,10 +75,13 @@
 	if ((b = sshbuf_from(data, datalen)) == NULL)
 		fatal_f("sshbuf_from failed");
 
-	/* session id, currently limited to SHA1 (20 bytes) or SHA256 (32) */
+	/* session id */
 	if ((r = sshbuf_get_string(b, NULL, &len)) != 0)
 		fatal_fr(r, "parse session ID");
-	if (len != 20 && len != 32)
+	if (len != 20 && /* SHA1 */
+	    len != 32 && /* SHA256 */
+	    len != 48 && /* SHA384 */
+	    len != 64)   /* SHA512 */
 		fail++;
 
 	if ((r = sshbuf_get_u8(b, &type)) != 0)