1 .\" $OpenBSD: ssh-add.1,v 1.48 2009/10/22 15:02:12 sobrado Exp $
5 .\" Author: Tatu Ylonen <ylo@cs.hut.fi>
6 .\" Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
7 .\" All rights reserved
9 .\" As far as I am concerned, the code I have written for this software
10 .\" can be used freely for any purpose. Any derived versions of this
11 .\" software must be clearly marked as such, and if the derived work is
12 .\" incompatible with the protocol description in the RFC file, it must be
13 .\" called by a name other than "ssh" or "Secure Shell".
16 .\" Copyright (c) 1999,2000 Markus Friedl. All rights reserved.
17 .\" Copyright (c) 1999 Aaron Campbell. All rights reserved.
18 .\" Copyright (c) 1999 Theo de Raadt. All rights reserved.
20 .\" Redistribution and use in source and binary forms, with or without
21 .\" modification, are permitted provided that the following conditions
23 .\" 1. Redistributions of source code must retain the above copyright
24 .\" notice, this list of conditions and the following disclaimer.
25 .\" 2. Redistributions in binary form must reproduce the above copyright
26 .\" notice, this list of conditions and the following disclaimer in the
27 .\" documentation and/or other materials provided with the distribution.
29 .\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
30 .\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
31 .\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
32 .\" IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
33 .\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
34 .\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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38 .\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
40 .Dd $Mdocdate: October 22 2009 $
45 .Nd adds RSA or DSA identities to the authentication agent
57 adds RSA or DSA identities to the authentication agent,
59 When run without arguments, it adds the files
64 Alternative file names can be given on the command line.
65 If any file requires a passphrase,
67 asks for the passphrase from the user.
68 The passphrase is read from the user's tty.
70 retries the last passphrase if multiple identity files are given.
72 The authentication agent must be running and the
74 environment variable must contain the name of its socket for
78 The options are as follows:
81 Indicates that added identities should be subject to confirmation before
82 being used for authentication.
83 Confirmation is performed by the
85 program mentioned below.
86 Successful confirmation is signaled by a zero exit status from the
88 program, rather than text entered into the requester.
90 Deletes all identities from the agent.
92 Instead of adding identities, removes identities from the agent.
95 has been run without arguments, the keys for the default identities will
97 Otherwise, the argument list will be interpreted as a list of paths to
98 public key files and matching keys will be removed from the agent.
99 If no public key is found at a given path,
105 Remove key in smartcard
108 Lists public key parameters of all identities currently represented
111 Lists fingerprints of all identities currently represented by the agent.
116 Set a maximum lifetime when adding identities to an agent.
117 The lifetime may be specified in seconds or in a time format
123 Lock the agent with a password.
127 .It Ev "DISPLAY" and "SSH_ASKPASS"
130 needs a passphrase, it will read the passphrase from the current
131 terminal if it was run from a terminal.
134 does not have a terminal associated with it but
138 are set, it will execute the program specified by
140 and open an X11 window to read the passphrase.
141 This is particularly useful when calling
146 (Note that on some machines it
147 may be necessary to redirect the input from
151 Identifies the path of a
153 socket used to communicate with the agent.
157 .It Pa ~/.ssh/identity
158 Contains the protocol version 1 RSA authentication identity of the user.
160 Contains the protocol version 2 DSA authentication identity of the user.
162 Contains the protocol version 2 RSA authentication identity of the user.
165 Identity files should not be readable by anyone but the user.
168 ignores identity files if they are accessible by others.
170 Exit status is 0 on success, 1 if the specified command fails,
173 is unable to contact the authentication agent.
180 OpenSSH is a derivative of the original and free
181 ssh 1.2.12 release by Tatu Ylonen.
182 Aaron Campbell, Bob Beck, Markus Friedl, Niels Provos,
183 Theo de Raadt and Dug Song
184 removed many bugs, re-added newer features and
186 Markus Friedl contributed the support for SSH
187 protocol versions 1.5 and 2.0.