+.\" $OpenBSD: ssh-keygen.1,v 1.35 2001/03/11 22:33:23 markus Exp $
+.\"
.\" -*- nroff -*-
.\"
.\" Author: Tatu Ylonen <ylo@cs.hut.fi>
.\" called by a name other than "ssh" or "Secure Shell".
.\"
.\"
-.\" Copyright (c) 1999,2000 Markus Friedl. All rights reserved.
-.\" Copyright (c) 1999 Aaron Campbell. All rights reserved.
-.\" Copyright (c) 1999 Theo de Raadt. All rights reserved.
+.\" Copyright (c) 1999,2000 Markus Friedl. All rights reserved.
+.\" Copyright (c) 1999 Aaron Campbell. All rights reserved.
+.\" Copyright (c) 1999 Theo de Raadt. All rights reserved.
.\"
.\" Redistribution and use in source and binary forms, with or without
.\" modification, are permitted provided that the following conditions
.Fl l
.Op Fl f Ar input_keyfile
.Nm ssh-keygen
-.Fl R
+.Fl B
+.Op Fl f Ar input_keyfile
.Sh DESCRIPTION
.Nm
generates and manages authentication keys for
defaults to generating an RSA key for use by protocols 1.3 and 1.5;
specifying the
.Fl t
-allows you to create a key for use by protocol 2.0.
+option allows you to create a key for use by protocol 2.0.
.Pp
Normally each user wishing to use SSH
with RSA or DSA authentication runs this once to create the authentication
appended.
The program also asks for a passphrase.
The passphrase may be empty to indicate no passphrase
-(host keys must have empty passphrase), or it may be a string of
+(host keys must have an empty passphrase), or it may be a string of
arbitrary length.
Good passphrases are 10-30 characters long and are
not simple sentences or otherwise easily guessable (English
.Dq dsa
for protocol version 2.
The default is
-.Dq rsa .
+.Dq rsa1 .
+.It Fl B
+Show the bubblebabble digest of specified private or public key file.
.It Fl C Ar comment
Provides the new comment.
.It Fl N Ar new_passphrase
Provides the new passphrase.
.It Fl P Ar passphrase
Provides the (old) passphrase.
-.It Fl R
-If RSA support is functional, immediately exits with code 0. If RSA
-support is not functional, exits with code 1. This flag will be
-removed once the RSA patent expires.
.It Fl x
This option will read a private
OpenSSH DSA format file and print a SSH2-compatible public key to stdout.
There is no need to keep the contents of this file secret.
.El
.Sh AUTHORS
-Tatu Ylonen <ylo@cs.hut.fi>
-.Pp
-OpenSSH
-is a derivative of the original (free) ssh 1.2.12 release, but with bugs
-removed and newer features re-added.
-Rapidly after the 1.2.12 release,
-newer versions bore successively more restrictive licenses.
-This version of OpenSSH
-.Bl -bullet
-.It
-has all components of a restrictive nature (i.e., patents, see
-.Xr crypto 3 )
-directly removed from the source code; any licensed or patented components
-are chosen from
-external libraries.
-.It
-has been updated to support ssh protocol 1.5.
-.It
-contains added support for
-.Xr kerberos 8
-authentication and ticket passing.
-.It
-supports one-time password authentication with
-.Xr skey 1 .
-.El
+OpenSSH is a derivative of the original and free
+ssh 1.2.12 release by Tatu Ylonen.
+Aaron Campbell, Bob Beck, Markus Friedl, Niels Provos,
+Theo de Raadt and Dug Song
+removed many bugs, re-added newer features and
+created OpenSSH.
+Markus Friedl contributed the support for SSH
+protocol versions 1.5 and 2.0.
.Sh SEE ALSO
.Xr ssh 1 ,
.Xr ssh-add 1 ,
.Xr ssh-agent 1 ,
-.Xr sshd 8 ,
-.Xr crypto 3
+.Xr sshd 8