116 lines
4.6 KiB
Plaintext
116 lines
4.6 KiB
Plaintext
SSH-ADD(1) OpenBSD Reference Manual SSH-ADD(1)
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NAME
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ssh-add - adds private key identities to the authentication agent
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SYNOPSIS
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ssh-add [-cDdLlXx] [-t life] [file ...]
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ssh-add -s pkcs11
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ssh-add -e pkcs11
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DESCRIPTION
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ssh-add adds private key identities to the authentication agent,
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ssh-agent(1). When run without arguments, it adds the files
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~/.ssh/id_rsa, ~/.ssh/id_dsa, ~/.ssh/id_ecdsa and ~/.ssh/identity. After
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loading a private key, ssh-add will try to load corresponding certificate
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information from the filename obtained by appending -cert.pub to the name
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of the private key file. Alternative file names can be given on the
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command line.
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If any file requires a passphrase, ssh-add asks for the passphrase from
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the user. The passphrase is read from the user's tty. ssh-add retries
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the last passphrase if multiple identity files are given.
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The authentication agent must be running and the SSH_AUTH_SOCK
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environment variable must contain the name of its socket for ssh-add to
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work.
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The options are as follows:
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-c Indicates that added identities should be subject to confirmation
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before being used for authentication. Confirmation is performed
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by the SSH_ASKPASS program mentioned below. Successful
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confirmation is signaled by a zero exit status from the
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SSH_ASKPASS program, rather than text entered into the requester.
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-D Deletes all identities from the agent.
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-d Instead of adding identities, removes identities from the agent.
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If ssh-add has been run without arguments, the keys for the
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default identities will be removed. Otherwise, the argument list
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will be interpreted as a list of paths to public key files and
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matching keys will be removed from the agent. If no public key
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is found at a given path, ssh-add will append .pub and retry.
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-e pkcs11
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Remove keys provided by the PKCS#11 shared library pkcs11.
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-L Lists public key parameters of all identities currently
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represented by the agent.
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-l Lists fingerprints of all identities currently represented by the
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agent.
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-s pkcs11
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Add keys provided by the PKCS#11 shared library pkcs11.
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-t life
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Set a maximum lifetime when adding identities to an agent. The
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lifetime may be specified in seconds or in a time format
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specified in sshd_config(5).
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-X Unlock the agent.
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-x Lock the agent with a password.
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ENVIRONMENT
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DISPLAY and SSH_ASKPASS
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If ssh-add needs a passphrase, it will read the passphrase from
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the current terminal if it was run from a terminal. If ssh-add
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does not have a terminal associated with it but DISPLAY and
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SSH_ASKPASS are set, it will execute the program specified by
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SSH_ASKPASS and open an X11 window to read the passphrase. This
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is particularly useful when calling ssh-add from a .xsession or
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related script. (Note that on some machines it may be necessary
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to redirect the input from /dev/null to make this work.)
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SSH_AUTH_SOCK
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Identifies the path of a UNIX-domain socket used to communicate
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with the agent.
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FILES
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~/.ssh/identity
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Contains the protocol version 1 RSA authentication identity of
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the user.
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~/.ssh/id_dsa
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Contains the protocol version 2 DSA authentication identity of
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the user.
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~/.ssh/id_ecdsa
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Contains the protocol version 2 ECDSA authentication identity of
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the user.
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~/.ssh/id_rsa
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Contains the protocol version 2 RSA authentication identity of
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the user.
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Identity files should not be readable by anyone but the user. Note that
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ssh-add ignores identity files if they are accessible by others.
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EXIT STATUS
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Exit status is 0 on success, 1 if the specified command fails, and 2 if
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ssh-add is unable to contact the authentication agent.
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SEE ALSO
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ssh(1), ssh-agent(1), ssh-keygen(1), sshd(8)
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AUTHORS
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OpenSSH is a derivative of the original and free ssh 1.2.12 release by
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Tatu Ylonen. Aaron Campbell, Bob Beck, Markus Friedl, Niels Provos, Theo
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de Raadt and Dug Song removed many bugs, re-added newer features and
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created OpenSSH. Markus Friedl contributed the support for SSH protocol
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versions 1.5 and 2.0.
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OpenBSD 5.0 October 28, 2010 OpenBSD 5.0
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