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Diff for /src/usr.bin/ssh/ssh-keygen.1 between version 1.23.2.3 and 1.23.2.4

version 1.23.2.3, 2001/03/21 19:46:29 version 1.23.2.4, 2001/05/07 21:09:35
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 .Os  .Os
 .Sh NAME  .Sh NAME
 .Nm ssh-keygen  .Nm ssh-keygen
 .Nd authentication key generation  .Nd authentication key generation, management and conversion
 .Sh SYNOPSIS  .Sh SYNOPSIS
 .Nm ssh-keygen  .Nm ssh-keygen
 .Op Fl q  .Op Fl q
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 .Op Fl N Ar new_passphrase  .Op Fl N Ar new_passphrase
 .Op Fl f Ar keyfile  .Op Fl f Ar keyfile
 .Nm ssh-keygen  .Nm ssh-keygen
 .Fl x  .Fl i
 .Op Fl f Ar input_keyfile  .Op Fl f Ar input_keyfile
 .Nm ssh-keygen  .Nm ssh-keygen
 .Fl X  .Fl e
 .Op Fl f Ar input_keyfile  .Op Fl f Ar input_keyfile
 .Nm ssh-keygen  .Nm ssh-keygen
 .Fl y  .Fl y
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 .Op Fl f Ar input_keyfile  .Op Fl f Ar input_keyfile
 .Sh DESCRIPTION  .Sh DESCRIPTION
 .Nm  .Nm
 generates and manages authentication keys for  generates, manages and converts authentication keys for
 .Xr ssh 1 .  .Xr ssh 1 .
 .Nm  .Nm
 defaults to generating an RSA key for use by protocols 1.3 and 1.5;  defaults to generating a RSA1 key for use by SSH protocol version 1.
 specifying the  specifying the
 .Fl t  .Fl t
 option allows you to create a key for use by protocol 2.0.  option allows you to create a key for use by SSH protocol version 2.
 .Pp  .Pp
 Normally each user wishing to use SSH  Normally each user wishing to use SSH
 with RSA or DSA authentication runs this once to create the authentication  with RSA or DSA authentication runs this once to create the authentication
 key in  key in
 .Pa $HOME/.ssh/identity  .Pa $HOME/.ssh/identity ,
   .Pa $HOME/.ssh/id_dsa
 or  or
 .Pa $HOME/.ssh/id_dsa .  .Pa $HOME/.ssh/id_rsa .
 Additionally, the system administrator may use this to generate host keys,  Additionally, the system administrator may use this to generate host keys,
 as seen in  as seen in
 .Pa /etc/rc .  .Pa /etc/rc .
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 lost or forgotten, you will have to generate a new key and copy the  lost or forgotten, you will have to generate a new key and copy the
 corresponding public key to other machines.  corresponding public key to other machines.
 .Pp  .Pp
 For RSA, there is also a comment field in the key file that is only for  For RSA1 keys,
   there is also a comment field in the key file that is only for
 convenience to the user to help identify the key.  convenience to the user to help identify the key.
 The comment can tell what the key is for, or whatever is useful.  The comment can tell what the key is for, or whatever is useful.
 The comment is initialized to  The comment is initialized to
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 Requests changing the comment in the private and public key files.  Requests changing the comment in the private and public key files.
 The program will prompt for the file containing the private keys, for  The program will prompt for the file containing the private keys, for
 passphrase if the key has one, and for the new comment.  passphrase if the key has one, and for the new comment.
   .It Fl e
   This option will read a private or public OpenSSH key file and
   print the key in a
   .Sq SECSH Public Key File Format
   to stdout.
   This option allows exporting keys for use by several commercial
   SSH implementations.
 .It Fl f  .It Fl f
 Specifies the filename of the key file.  Specifies the filename of the key file.
   .It Fl i
   This option will read an unencrypted private (or public) key file
   in SSH2-compatible format and print an OpenSSH compatible private
   (or public) key to stdout.
   .Nm
   also reads the
   .Sq SECSH Public Key File Format .
   This option allows importing keys from several commercial
   SSH implementations.
 .It Fl l  .It Fl l
 Show fingerprint of specified private or public key file.  Show fingerprint of specified private or public key file.
 .It Fl p  .It Fl p
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 Used by  Used by
 .Pa /etc/rc  .Pa /etc/rc
 when creating a new key.  when creating a new key.
   .It Fl y
   This option will read a private
   OpenSSH format file and print an OpenSSH public key to stdout.
 .It Fl t Ar type  .It Fl t Ar type
 Specifies the type of the key to create.  Specifies the type of the key to create.
 The possible values are  The possible values are
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 Provides the new passphrase.  Provides the new passphrase.
 .It Fl P Ar passphrase  .It Fl P Ar passphrase
 Provides the (old) passphrase.  Provides the (old) passphrase.
 .It Fl x  
 This option will read a private  
 OpenSSH DSA format file and print a SSH2-compatible public key to stdout.  
 .It Fl X  
 This option will read a unencrypted  
 SSH2-compatible private (or public) key file and  
 print an OpenSSH compatible private (or public) key to stdout.  
 .It Fl y  
 This option will read a private  
 OpenSSH format file and print an OpenSSH public key to stdout.  
 .El  .El
 .Sh FILES  .Sh FILES
 .Bl -tag -width Ds  .Bl -tag -width Ds
 .It Pa $HOME/.ssh/identity  .It Pa $HOME/.ssh/identity
 Contains the RSA authentication identity of the user.  Contains the protocol version 1 RSA authentication identity of the user.
 This file should not be readable by anyone but the user.  This file should not be readable by anyone but the user.
 It is possible to  It is possible to
 specify a passphrase when generating the key; that passphrase will be  specify a passphrase when generating the key; that passphrase will be
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 .Xr sshd 8  .Xr sshd 8
 will read this file when a login attempt is made.  will read this file when a login attempt is made.
 .It Pa $HOME/.ssh/identity.pub  .It Pa $HOME/.ssh/identity.pub
 Contains the public key for authentication.  Contains the protocol version 1 RSA public key for authentication.
 The contents of this file should be added to  The contents of this file should be added to
 .Pa $HOME/.ssh/authorized_keys  .Pa $HOME/.ssh/authorized_keys
 on all machines  on all machines
 where you wish to log in using RSA authentication.  where you wish to log in using RSA authentication.
 There is no need to keep the contents of this file secret.  There is no need to keep the contents of this file secret.
 .It Pa $HOME/.ssh/id_dsa  .It Pa $HOME/.ssh/id_dsa
 Contains the DSA authentication identity of the user.  Contains the protocol version 2 DSA authentication identity of the user.
 This file should not be readable by anyone but the user.  This file should not be readable by anyone but the user.
 It is possible to  It is possible to
 specify a passphrase when generating the key; that passphrase will be  specify a passphrase when generating the key; that passphrase will be
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 .Xr sshd 8  .Xr sshd 8
 will read this file when a login attempt is made.  will read this file when a login attempt is made.
 .It Pa $HOME/.ssh/id_dsa.pub  .It Pa $HOME/.ssh/id_dsa.pub
 Contains the public key for authentication.  Contains the protocol version 2 DSA public key for authentication.
 The contents of this file should be added to  The contents of this file should be added to
 .Pa $HOME/.ssh/authorized_keys2  .Pa $HOME/.ssh/authorized_keys2
 on all machines  on all machines
 where you wish to log in using public key authentication.  where you wish to log in using public key authentication.
 There is no need to keep the contents of this file secret.  There is no need to keep the contents of this file secret.
   .It Pa $HOME/.ssh/id_rsa
   Contains the protocol version 2 RSA authentication identity of the user.
   This file should not be readable by anyone but the user.
   It is possible to
   specify a passphrase when generating the key; that passphrase will be
   used to encrypt the private part of this file using 3DES.
   This file is not automatically accessed by
   .Nm
   but it is offered as the default file for the private key.
   .Xr sshd 8
   will read this file when a login attempt is made.
   .It Pa $HOME/.ssh/id_rsa.pub
   Contains the protocol version 2 RSA public key for authentication.
   The contents of this file should be added to
   .Pa $HOME/.ssh/authorized_keys2
   on all machines
   where you wish to log in using public key authentication.
   There is no need to keep the contents of this file secret.
 .El  .El
 .Sh AUTHORS  .Sh AUTHORS
 OpenSSH is a derivative of the original and free  OpenSSH is a derivative of the original and free
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 .Xr ssh-add 1 ,  .Xr ssh-add 1 ,
 .Xr ssh-agent 1 ,  .Xr ssh-agent 1 ,
 .Xr sshd 8  .Xr sshd 8
   .Rs
   .%A J. Galbraith
   .%A R. Thayer
   .%T "SECSH Public Key File Format"
   .%N draft-ietf-secsh-publickeyfile-01.txt
   .%D March 2001
   .%O work in progress material
   .Re
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