upstream: allow "ssh-keygen -x no-touch-required" when generating a

security key keypair to request one that does not require a touch for each
authentication attempt. The default remains to require touch.

feedback deraadt; ok markus@

OpenBSD-Commit-ID: 887e7084b2e89c0c62d1598ac378aad8e434bcbd

1 files changed, 10 insertions, 1 deletions

diff --git a/ssh-keygen.1 b/ssh-keygen.1
index 06aead348..837238e4e 100644
--- a/ssh-keygen.1
+++ b/ssh-keygen.1
@@ -1,4 +1,4 @@
-.\"     $OpenBSD: ssh-keygen.1,v 1.177 2019/11/25 00:54:23 djm Exp $
+.\"     $OpenBSD: ssh-keygen.1,v 1.178 2019/11/25 00:55:58 djm Exp $
 .\"
 .\" Author: Tatu Ylonen <ylo@cs.hut.fi>
 .\" Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
@@ -679,6 +679,15 @@ internal support for USB HID keys.
 .It Fl x Ar flags
 Specifies the security key flags to use when enrolling a security key-hosted
 key.
+Flags may be specified by name or directly as a hexadecimal value.
+Only one named flag is supported at present:
+.Cm no-touch-required ,
+which indicates that the generated private key should not require touch
+events (user presence) when making signatures.
+Note that
+.Xr sshd 8
+will refuse such signatures by default, unless overridden via
+an authorized_keys option.
 .It Fl y
 This option will read a private
 OpenSSH format file and print an OpenSSH public key to stdout.