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d4487008 | 1 | .\" $OpenBSD: ssh-add.1,v 1.46 2007/06/12 13:41:03 jmc Exp $ |
3c0ef626 | 2 | .\" |
3 | .\" -*- nroff -*- | |
4 | .\" | |
5 | .\" Author: Tatu Ylonen <ylo@cs.hut.fi> | |
6 | .\" Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland | |
7 | .\" All rights reserved | |
8 | .\" | |
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". | |
14 | .\" | |
15 | .\" | |
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. | |
19 | .\" | |
20 | .\" Redistribution and use in source and binary forms, with or without | |
21 | .\" modification, are permitted provided that the following conditions | |
22 | .\" are met: | |
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. | |
28 | .\" | |
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, | |
35 | .\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
36 | .\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
37 | .\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF | |
38 | .\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
39 | .\" | |
d4487008 | 40 | .Dd $Mdocdate: June 12 2007 $ |
3c0ef626 | 41 | .Dt SSH-ADD 1 |
42 | .Os | |
43 | .Sh NAME | |
44 | .Nm ssh-add | |
45 | .Nd adds RSA or DSA identities to the authentication agent | |
46 | .Sh SYNOPSIS | |
47 | .Nm ssh-add | |
996d5e62 | 48 | .Op Fl cDdLlXx |
f5799ae1 | 49 | .Op Fl t Ar life |
3c0ef626 | 50 | .Op Ar |
51 | .Nm ssh-add | |
52 | .Fl s Ar reader | |
53 | .Nm ssh-add | |
54 | .Fl e Ar reader | |
55 | .Sh DESCRIPTION | |
56 | .Nm | |
57 | adds RSA or DSA identities to the authentication agent, | |
58 | .Xr ssh-agent 1 . | |
e9a17296 | 59 | When run without arguments, it adds the files |
665a873d | 60 | .Pa ~/.ssh/id_rsa , |
61 | .Pa ~/.ssh/id_dsa | |
e9a17296 | 62 | and |
665a873d | 63 | .Pa ~/.ssh/identity . |
3c0ef626 | 64 | Alternative file names can be given on the command line. |
65 | If any file requires a passphrase, | |
66 | .Nm | |
67 | asks for the passphrase from the user. | |
68 | The passphrase is read from the user's tty. | |
69 | .Nm | |
70 | retries the last passphrase if multiple identity files are given. | |
71 | .Pp | |
cdd66111 | 72 | The authentication agent must be running and the |
73 | .Ev SSH_AUTH_SOCK | |
74 | environment variable must contain the name of its socket for | |
3c0ef626 | 75 | .Nm |
76 | to work. | |
77 | .Pp | |
78 | The options are as follows: | |
79 | .Bl -tag -width Ds | |
6a9b3198 | 80 | .It Fl c |
81 | Indicates that added identities should be subject to confirmation before | |
82 | being used for authentication. | |
83 | Confirmation is performed by the | |
84 | .Ev SSH_ASKPASS | |
85 | program mentioned below. | |
86 | Successful confirmation is signaled by a zero exit status from the | |
87 | .Ev SSH_ASKPASS | |
88 | program, rather than text entered into the requester. | |
996d5e62 | 89 | .It Fl D |
90 | Deletes all identities from the agent. | |
91 | .It Fl d | |
d4487008 | 92 | Instead of adding identities, removes identities from the agent. |
93 | If | |
94 | .Nm | |
95 | has been run without arguments, the keys for the default identities will | |
96 | be removed. | |
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, | |
100 | .Nm | |
101 | will append | |
102 | .Pa .pub | |
103 | and retry. | |
3c0ef626 | 104 | .It Fl e Ar reader |
105 | Remove key in smartcard | |
106 | .Ar reader . | |
996d5e62 | 107 | .It Fl L |
108 | Lists public key parameters of all identities currently represented | |
109 | by the agent. | |
110 | .It Fl l | |
111 | Lists fingerprints of all identities currently represented by the agent. | |
112 | .It Fl s Ar reader | |
113 | Add key in smartcard | |
114 | .Ar reader . | |
115 | .It Fl t Ar life | |
116 | Set a maximum lifetime when adding identities to an agent. | |
117 | The lifetime may be specified in seconds or in a time format | |
118 | specified in | |
119 | .Xr sshd_config 5 . | |
120 | .It Fl X | |
121 | Unlock the agent. | |
122 | .It Fl x | |
123 | Lock the agent with a password. | |
3c0ef626 | 124 | .El |
3c0ef626 | 125 | .Sh ENVIRONMENT |
126 | .Bl -tag -width Ds | |
127 | .It Ev "DISPLAY" and "SSH_ASKPASS" | |
128 | If | |
129 | .Nm | |
130 | needs a passphrase, it will read the passphrase from the current | |
131 | terminal if it was run from a terminal. | |
132 | If | |
133 | .Nm | |
134 | does not have a terminal associated with it but | |
135 | .Ev DISPLAY | |
136 | and | |
137 | .Ev SSH_ASKPASS | |
138 | are set, it will execute the program specified by | |
139 | .Ev SSH_ASKPASS | |
140 | and open an X11 window to read the passphrase. | |
141 | This is particularly useful when calling | |
142 | .Nm | |
143 | from a | |
996d5e62 | 144 | .Pa .xsession |
3c0ef626 | 145 | or related script. |
146 | (Note that on some machines it | |
147 | may be necessary to redirect the input from | |
148 | .Pa /dev/null | |
149 | to make this work.) | |
f5799ae1 | 150 | .It Ev SSH_AUTH_SOCK |
151 | Identifies the path of a unix-domain socket used to communicate with the | |
152 | agent. | |
3c0ef626 | 153 | .El |
0fff78ff | 154 | .Sh FILES |
155 | .Bl -tag -width Ds | |
665a873d | 156 | .It Pa ~/.ssh/identity |
0fff78ff | 157 | Contains the protocol version 1 RSA authentication identity of the user. |
665a873d | 158 | .It Pa ~/.ssh/id_dsa |
0fff78ff | 159 | Contains the protocol version 2 DSA authentication identity of the user. |
665a873d | 160 | .It Pa ~/.ssh/id_rsa |
0fff78ff | 161 | Contains the protocol version 2 RSA authentication identity of the user. |
162 | .El | |
163 | .Pp | |
164 | Identity files should not be readable by anyone but the user. | |
165 | Note that | |
166 | .Nm | |
167 | ignores identity files if they are accessible by others. | |
e9a17296 | 168 | .Sh DIAGNOSTICS |
169 | Exit status is 0 on success, 1 if the specified command fails, | |
170 | and 2 if | |
171 | .Nm | |
172 | is unable to contact the authentication agent. | |
0fff78ff | 173 | .Sh SEE ALSO |
174 | .Xr ssh 1 , | |
175 | .Xr ssh-agent 1 , | |
176 | .Xr ssh-keygen 1 , | |
177 | .Xr sshd 8 | |
3c0ef626 | 178 | .Sh AUTHORS |
179 | OpenSSH is a derivative of the original and free | |
180 | ssh 1.2.12 release by Tatu Ylonen. | |
181 | Aaron Campbell, Bob Beck, Markus Friedl, Niels Provos, | |
182 | Theo de Raadt and Dug Song | |
183 | removed many bugs, re-added newer features and | |
184 | created OpenSSH. | |
185 | Markus Friedl contributed the support for SSH | |
186 | protocol versions 1.5 and 2.0. |