Author: Tatu Ylonen <ylo@cs.hut.fi>
Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
All rights reserved
As far as I am concerned, the code I have written for this software
can be used freely for any purpose. Any derived versions of this
software must be clearly marked as such, and if the derived work is
incompatible with the protocol description in the RFC file, it must be
called by a name other than "ssh" or "Secure Shell".
Copyright (c) 1999,2000 Markus Friedl. All rights reserved.
Copyright (c) 1999 Aaron Campbell. All rights reserved.
Copyright (c) 1999 Theo de Raadt. All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
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1. Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
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.Dd September 25, 1999 .Dt SSH-ADD 1 .Os .Sh NAME .Nm ssh-add .Nd adds RSA or DSA identities for the authentication agent .Sh SYNOPSIS .Nm ssh-add .Op Fl lLdD .Op Ar .Sh DESCRIPTION .Nm adds RSA or DSA identities to the authentication agent, .Xr ssh-agent 1 . When run without arguments, it adds the file
a $HOME/.ssh/identity . Alternative file names can be given on the command line. If any file requires a passphrase, .Nm asks for the passphrase from the user. The Passphrase it is read from the user's tty.
p The authentication agent must be running and must be an ancestor of the current process for .Nm to work.
p The options are as follows: l -tag -width Ds t Fl l Lists fingerprints of all identities currently represented by the agent. t Fl L Lists public key parameters of all identities currently represented by the agent. t Fl d Instead of adding the identity, removes the identity from the agent. t Fl D Deletes all identities from the agent. .El .Sh FILES l -tag -width Ds t Pa $HOME/.ssh/identity Contains the RSA authentication identity of the user. This file should not be readable by anyone but the user. Note that .Nm ignores this file if it is accessible by others. It is possible to specify a passphrase when generating the key; that passphrase will be used to encrypt the private part of this file. This is the default file added by .Nm when no other files have been specified. t Pa $HOME/.ssh/id_dsa Contains the DSA authentication identity of the user. .El .Sh ENVIRONMENT l -tag -width Ds t Ev "DISPLAY" and "SSH_ASKPASS" If .Nm needs a passphrase, it will read the passphrase from the current terminal if it was run from a terminal. If .Nm does not have a terminal associated with it but .Ev DISPLAY and .Ev SSH_ASKPASS are set, it will execute the program specified by .Ev SSH_ASKPASS and open an X11 window to read the passphrase. This is particularly useful when calling .Nm from a
a .Xsession or related script. (Note that on some machines it may be necessary to redirect the input from
a /dev/null to make this work.) .El .Sh AUTHOR Tatu Ylonen <ylo@cs.hut.fi>
p OpenSSH is a derivative of the original (free) ssh 1.2.12 release, but with bugs removed and newer features re-added. Rapidly after the 1.2.12 release, newer versions bore successively more restrictive licenses. This version of OpenSSH l -bullet t has all components of a restrictive nature (i.e., patents, see .Xr ssl 8 ) directly removed from the source code; any licensed or patented components are chosen from external libraries. t has been updated to support ssh protocol 1.5. t contains added support for .Xr kerberos 8 authentication and ticket passing. t supports one-time password authentication with .Xr skey 1 . .El .Sh SEE ALSO .Xr ssh 1 , .Xr ssh-agent 1 , .Xr ssh-keygen 1 , .Xr sshd 8 , .Xr ssl 8