path: root/ssh-keyscan.1
diff options
authorDamien Miller <>2010-08-31 22:41:14 +1000
committerDamien Miller <>2010-08-31 22:41:14 +1000
commiteb8b60e320cdade9f4c07e2abacfb92c52e01348 (patch)
tree4e5bc25790566402e5b7ae00cefd2c57e867ef09 /ssh-keyscan.1
parentda108ece6843f1268aa36d7c8ed0030dc53acd15 (diff)
- 2010/08/31 11:54:45
[PROTOCOL PROTOCOL.agent PROTOCOL.certkeys auth2-jpake.c authfd.c] [authfile.c buffer.h dns.c kex.c kex.h key.c key.h monitor.c] [monitor_wrap.c myproposal.h packet.c packet.h pathnames.h readconf.c] [ssh-add.1 ssh-add.c ssh-agent.1 ssh-agent.c ssh-keygen.1 ssh-keygen.c] [ssh-keyscan.1 ssh-keyscan.c ssh-keysign.8 ssh.1 ssh.c ssh2.h] [ssh_config.5 sshconnect.c sshconnect2.c sshd.8 sshd.c sshd_config.5] [uuencode.c uuencode.h bufec.c kexecdh.c kexecdhc.c kexecdhs.c ssh-ecdsa.c] Implement Elliptic Curve Cryptography modes for key exchange (ECDH) and host/user keys (ECDSA) as specified by RFC5656. ECDH and ECDSA offer better performance than plain DH and DSA at the same equivalent symmetric key length, as well as much shorter keys. Only the mandatory sections of RFC5656 are implemented, specifically the three REQUIRED curves nistp256, nistp384 and nistp521 and only ECDH and ECDSA. Point compression (optional in RFC5656 is NOT implemented). Certificate host and user keys using the new ECDSA key types are supported. Note that this code has not been tested for interoperability and may be subject to change. feedback and ok markus@
Diffstat (limited to 'ssh-keyscan.1')
1 files changed, 12 insertions, 8 deletions
diff --git a/ssh-keyscan.1 b/ssh-keyscan.1
index 78255ff7..fe9bb6e0 100644
--- a/ssh-keyscan.1
+++ b/ssh-keyscan.1
@@ -1,4 +1,4 @@
-.\" $OpenBSD: ssh-keyscan.1,v 1.28 2010/01/09 23:04:13 dtucker Exp $
+.\" $OpenBSD: ssh-keyscan.1,v 1.29 2010/08/31 11:54:45 djm Exp $
.\" Copyright 1995, 1996 by David Mazieres <>.
@@ -6,7 +6,7 @@
.\" permitted provided that due credit is given to the author and the
.\" OpenBSD project by leaving this copyright notice intact.
-.Dd $Mdocdate: January 9 2010 $
+.Dd $Mdocdate: August 31 2010 $
@@ -88,9 +88,10 @@ Specifies the type of the key to fetch from the scanned hosts.
The possible values are
.Dq rsa1
for protocol version 1 and
-.Dq rsa
+.Dq dsa ,
+.Dq ecdsa
-.Dq dsa
+.Dq rsa
for protocol version 2.
Multiple values may be specified by separating them with commas.
The default is
@@ -122,7 +123,7 @@ attacks which have begun after the ssh_known_hosts file was created.
host-or-namelist bits exponent modulus
-.Pa Output format for rsa and dsa keys:
+.Pa Output format for rsa, dsa and ecdsa keys:
.Bd -literal
host-or-namelist keytype base64-encoded-key
@@ -130,9 +131,12 @@ host-or-namelist keytype base64-encoded-key
.Pa keytype
is either
-.Dq ssh-rsa
+.Dq ecdsa-sha2-nistp256 ,
+.Dq ecdsa-sha2-nistp384 ,
+.Dq ecdsa-sha2-nistp521 ,
+.Dq ssh-dss
-.Dq ssh-dss .
+.Dq ssh-rsa .
.Pa /etc/ssh/ssh_known_hosts
@@ -149,7 +153,7 @@ Find all hosts from the file
which have new or different keys from those in the sorted file
.Pa ssh_known_hosts :
.Bd -literal
-$ ssh-keyscan -t rsa,dsa -f ssh_hosts | \e
+$ ssh-keyscan -t rsa,dsa,ecdsa -f ssh_hosts | \e
sort -u - ssh_known_hosts | diff ssh_known_hosts -