From 801c9f095e6d8b7b91aefd98f5001c652ea13488 Mon Sep 17 00:00:00 2001 From: "djm@openbsd.org" Date: Thu, 27 Aug 2020 01:07:09 +0000 Subject: upstream: support for requiring user verified FIDO keys in sshd This adds a "verify-required" authorized_keys flag and a corresponding sshd_config option that tells sshd to require that FIDO keys verify the user identity before completing the signing/authentication attempt. Whether or not user verification was performed is already baked into the signature made on the FIDO token, so this is just plumbing that flag through and adding ways to require it. feedback and ok markus@ OpenBSD-Commit-ID: 3a2313aae153e043d57763d766bb6d55c4e276e6 --- sshd.8 | 11 +++++++++-- 1 file changed, 9 insertions(+), 2 deletions(-) (limited to 'sshd.8') diff --git a/sshd.8 b/sshd.8 index c5f8987d..b2fad56d 100644 --- a/sshd.8 +++ b/sshd.8 @@ -33,8 +33,8 @@ .\" (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: sshd.8,v 1.312 2020/01/25 06:03:10 djm Exp $ -.Dd $Mdocdate: January 25 2020 $ +.\" $OpenBSD: sshd.8,v 1.313 2020/08/27 01:07:10 djm Exp $ +.Dd $Mdocdate: August 27 2020 $ .Dt SSHD 8 .Os .Sh NAME @@ -631,6 +631,13 @@ This option only makes sense for the FIDO authenticator algorithms .Cm ecdsa-sk and .Cm ed25519-sk . +.It Cm verify-required +Require that signatures made using this key attest that they verified +the user, e.g. via a PIN. +This option only makes sense for the FIDO authenticator algorithms +.Cm ecdsa-sk +and +.Cm ed25519-sk . .It Cm restrict Enable all restrictions, i.e. disable port, agent and X11 forwarding, as well as disabling PTY allocation -- cgit v1.2.1