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authorColin Watson <cjwatson@debian.org>2005-01-04 12:58:23 +0000
committerColin Watson <cjwatson@debian.org>2005-01-04 12:58:23 +0000
commitebd2ce335af5861020c79fddb1ae35c03bf036cf (patch)
treeec008b93c62e3241ab611d8c949ebc92905c66b4 /ssh-add.0
parente17cc75fe35f62ba52928b5889b5e7aadb62bedb (diff)
parent16f1d21ea191deaaeeba719d01c0ad82aa044653 (diff)
Import OpenSSH 3.9p1.
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1SSH-ADD(1) OpenBSD Reference Manual SSH-ADD(1)
2
3NAME
4 ssh-add - adds RSA or DSA identities to the authentication agent
5
6SYNOPSIS
7 ssh-add [-lLdDxXc] [-t life] [file ...]
8 ssh-add -s reader
9 ssh-add -e reader
10
11DESCRIPTION
12 ssh-add adds RSA or DSA identities to the authentication agent,
13 ssh-agent(1). When run without arguments, it adds the files
14 $HOME/.ssh/id_rsa, $HOME/.ssh/id_dsa and $HOME/.ssh/identity. Alterna-
15 tive file names can be given on the command line. If any file requires a
16 passphrase, ssh-add asks for the passphrase from the user. The
17 passphrase is read from the user's tty. ssh-add retries the last
18 passphrase if multiple identity files are given.
19
20 The authentication agent must be running and the SSH_AUTH_SOCK environ-
21 ment variable must contain the name of its socket for ssh-add to work.
22
23 The options are as follows:
24
25 -l Lists fingerprints of all identities currently represented by the
26 agent.
27
28 -L Lists public key parameters of all identities currently repre-
29 sented by the agent.
30
31 -d Instead of adding the identity, removes the identity from the
32 agent.
33
34 -D Deletes all identities from the agent.
35
36 -x Lock the agent with a password.
37
38 -X Unlock the agent.
39
40 -t life
41 Set a maximum lifetime when adding identities to an agent. The
42 lifetime may be specified in seconds or in a time format speci-
43 fied in sshd_config(5).
44
45 -c Indicates that added identities should be subject to confirmation
46 before being used for authentication. Confirmation is performed
47 by the SSH_ASKPASS program mentioned below. Successful confirma-
48 tion is signaled by a zero exit status from the SSH_ASKPASS pro-
49 gram, rather than text entered into the requester.
50
51 -s reader
52 Add key in smartcard reader.
53
54 -e reader
55 Remove key in smartcard reader.
56
57ENVIRONMENT
58 DISPLAY and SSH_ASKPASS
59 If ssh-add needs a passphrase, it will read the passphrase from
60 the current terminal if it was run from a terminal. If ssh-add
61 does not have a terminal associated with it but DISPLAY and
62 SSH_ASKPASS are set, it will execute the program specified by
63 SSH_ASKPASS and open an X11 window to read the passphrase. This
64 is particularly useful when calling ssh-add from a .Xsession or
65 related script. (Note that on some machines it may be necessary
66 to redirect the input from /dev/null to make this work.)
67
68 SSH_AUTH_SOCK
69 Identifies the path of a unix-domain socket used to communicate
70 with the agent.
71
72FILES
73 $HOME/.ssh/identity
74 Contains the protocol version 1 RSA authentication identity of
75 the user.
76
77 $HOME/.ssh/id_dsa
78 Contains the protocol version 2 DSA authentication identity of
79 the user.
80
81 $HOME/.ssh/id_rsa
82 Contains the protocol version 2 RSA authentication identity of
83 the user.
84
85 Identity files should not be readable by anyone but the user. Note that
86 ssh-add ignores identity files if they are accessible by others.
87
88DIAGNOSTICS
89 Exit status is 0 on success, 1 if the specified command fails, and 2 if
90 ssh-add is unable to contact the authentication agent.
91
92SEE ALSO
93 ssh(1), ssh-agent(1), ssh-keygen(1), sshd(8)
94
95AUTHORS
96 OpenSSH is a derivative of the original and free ssh 1.2.12 release by
97 Tatu Ylonen. Aaron Campbell, Bob Beck, Markus Friedl, Niels Provos, Theo
98 de Raadt and Dug Song removed many bugs, re-added newer features and cre-
99 ated OpenSSH. Markus Friedl contributed the support for SSH protocol
100 versions 1.5 and 2.0.
101
102OpenBSD 3.6 September 25, 1999 2