- djm@cvs.openbsd.org 2010/03/04 10:36:03

     [auth-rh-rsa.c auth-rsa.c auth.c auth.h auth2-hostbased.c auth2-pubkey.c]
     [authfile.c authfile.h hostfile.c hostfile.h servconf.c servconf.h]
     [ssh-keygen.c ssh.1 sshconnect.c sshd_config.5]
     Add a TrustedUserCAKeys option to sshd_config to specify CA keys that
     are trusted to authenticate users (in addition than doing it per-user
     in authorized_keys).

     Add a RevokedKeys option to sshd_config and a @revoked marker to
     known_hosts to allow keys to me revoked and banned for user or host
     authentication.

     feedback and ok markus@

1 files changed, 18 insertions, 2 deletions

diff --git a/ssh.1 b/ssh.1
index 183dc277f..e8a4e5953 100644
--- a/ssh.1
+++ b/ssh.1
@@ -34,8 +34,8 @@
 .\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 .\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 .\"
-.\" $OpenBSD: ssh.1,v 1.296 2010/02/26 22:09:28 jmc Exp $
-.Dd $Mdocdate: February 26 2010 $
+.\" $OpenBSD: ssh.1,v 1.297 2010/03/04 10:36:03 djm Exp $
+.Dd $Mdocdate: March 4 2010 $
 .Dt SSH 1
 .Os
 .Sh NAME
@@ -1121,6 +1121,22 @@ See the
 section of
 .Xr ssh-keygen 1
 for more details.
+.Pp
+Keys may be also be marked as revoked using the
+.Dq @revoked
+marker.
+Revoked keys will always trigger a warning when encountered and the host
+that presented them will be treated as untrusted.
+For example:
+.Pp
+.Dl @revoked * ssh-rsa AAAAB5W...
+.Pp
+Revoking a key revokes it for direct use and as a certification authority.
+Do not use both the
+.Dq @cert-authority and
+.Dq @revoked
+markers on the same line.
+.Pp
 .Sh SSH-BASED VIRTUAL PRIVATE NETWORKS
 .Nm
 contains support for Virtual Private Network (VPN) tunnelling