upstream: in order to be able to figure out the number of

signatures left on a shielded key, we need to transfer the number of
signatures left from the private to the public key. ok djm@

OpenBSD-Commit-ID: 8a5d0d260aeace47d372695fdae383ce9b962574

1 files changed, 6 insertions, 1 deletions

diff --git a/sshkey.c b/sshkey.c
index 190426e28..8db947436 100644
--- a/sshkey.c
+++ b/sshkey.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: sshkey.c,v 1.91 2019/11/13 07:53:10 markus Exp $ */
+/* $OpenBSD: sshkey.c,v 1.92 2019/11/13 22:00:21 markus Exp $ */
 /*
  * Copyright (c) 2000, 2001 Markus Friedl.  All rights reserved.
  * Copyright (c) 2008 Alexander von Gernler.  All rights reserved.
@@ -1951,6 +1951,7 @@ sshkey_from_private(const struct sshkey *k, struct sshkey **pkp)
                 if ((r = sshkey_xmss_init(n, k->xmss_name)) != 0)
                         goto out;
                 if (k->xmss_pk != NULL) {
+                        u_int32_t left;
                         size_t pklen = sshkey_xmss_pklen(k);
                         if (pklen == 0 || sshkey_xmss_pklen(n) != pklen) {
                                 r = SSH_ERR_INTERNAL_ERROR;
@@ -1961,6 +1962,10 @@ sshkey_from_private(const struct sshkey *k, struct sshkey **pkp)
                                 goto out;
                         }
                         memcpy(n->xmss_pk, k->xmss_pk, pklen);
+                        /* simulate number of signatures left on pubkey */
+                        left = sshkey_xmss_signatures_left(k);
+                        if (left)
+                                sshkey_xmss_enable_maxsign(n, left);
                 }
                 break;
 #endif /* WITH_XMSS */