1 .\" $OpenBSD: ssh-add.1,v 1.43 2005/04/21 06:17:50 djm 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.
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40 .Dd September 25, 1999
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 the identity, removes the identity from the agent.
94 Remove key in smartcard
97 Lists public key parameters of all identities currently represented
100 Lists fingerprints of all identities currently represented by the agent.
105 Set a maximum lifetime when adding identities to an agent.
106 The lifetime may be specified in seconds or in a time format
112 Lock the agent with a password.
116 .It Ev "DISPLAY" and "SSH_ASKPASS"
119 needs a passphrase, it will read the passphrase from the current
120 terminal if it was run from a terminal.
123 does not have a terminal associated with it but
127 are set, it will execute the program specified by
129 and open an X11 window to read the passphrase.
130 This is particularly useful when calling
135 (Note that on some machines it
136 may be necessary to redirect the input from
140 Identifies the path of a unix-domain socket used to communicate with the
145 .It Pa ~/.ssh/identity
146 Contains the protocol version 1 RSA authentication identity of the user.
148 Contains the protocol version 2 DSA authentication identity of the user.
150 Contains the protocol version 2 RSA authentication identity of the user.
153 Identity files should not be readable by anyone but the user.
156 ignores identity files if they are accessible by others.
158 Exit status is 0 on success, 1 if the specified command fails,
161 is unable to contact the authentication agent.
168 OpenSSH is a derivative of the original and free
169 ssh 1.2.12 release by Tatu Ylonen.
170 Aaron Campbell, Bob Beck, Markus Friedl, Niels Provos,
171 Theo de Raadt and Dug Song
172 removed many bugs, re-added newer features and
174 Markus Friedl contributed the support for SSH
175 protocol versions 1.5 and 2.0.