Provided by: monkeysphere_0.26-1_all bug

NAME

     openpgp2ssh - translate OpenPGP keys to SSH keys

SYNOPSIS

     openpgp2ssh < mykey.gpg

     gpg --export $KEYID | openpgp2ssh $KEYID

     gpg --export-secret-key $KEYID | openpgp2ssh $KEYID

DESCRIPTION

     openpgp2ssh takes an OpenPGP-formatted primary key and associated subkeys
     on standard input, and spits out the requested equivalent SSH-style key
     on standard output.

     If the data on standard input contains no subkeys, you can invoke
     openpgp2ssh without arguments.  If the data on standard input contains
     multiple keys (e.g. a primary key and associated subkeys), you must
     specify a specific OpenPGP key identifier as the first argument to
     indicate which key to export.  The key ID is normally the 40 hex digit
     OpenPGP fingerprint of the key or subkey desired, but openpgp2ssh will
     accept as few as the last 8 digits of the fingerprint as a key ID.

     If the input contains an OpenPGP RSA public key, it will be converted to
     the OpenSSH-style single-line keystring, prefixed with the key type
     (‘ssh-rsa’).  This format is suitable (with minor alterations) for
     insertion into known_hosts files and authorized_keys files.

     If the input contains an OpenPGP RSA secret key, it will be converted to
     the equivalent PEM-encoded private key.

     openpgp2ssh is part of the monkeysphere(7) framework for providing a PKI
     for SSH.

CAVEATS

     The keys produced by this process are stripped of all identifying
     information, including certifications, self-signatures, etc.  This is
     intentional, since ssh attaches no inherent significance to these
     features.

     openpgp2ssh will produce output for any requested RSA key.  This means,
     among other things, that it will happily export revoked keys,
     unverifiable keys, expired keys, etc.  Make sure you do your own key
     validation before using this tool!

EXAMPLES

     gpg --export-secret-key $KEYID | openpgp2ssh $KEYID | ssh-add -c
     /dev/stdin

     This pushes the secret key into the active ssh-agent(1).  Tools such as
     ssh(1) which know how to talk to the ssh-agent(1) can now rely on the
     key.

AUTHOR

     openpgp2ssh and this man page were written by Daniel Kahn Gillmor
     <dkg@fifthhorseman.net>.

BUGS

     openpgp2ssh only works with RSA keys.  DSA keys are the only other key
     type available in both OpenPGP and SSH, but they are currently
     unsupported by this utility.

     openpgp2ssh only accepts raw OpenPGP packets on standard input.  It does
     not accept ASCII-armored input.  openpgp2ssh Currently only exports into
     formats used by the OpenSSH.  It should support other key output formats,
     such as those used by lsh(1) and putty(1).

     Secret key output is currently not passphrase-protected.

     openpgp2ssh currently cannot handle passphrase-protected secret keys on
     input.

SEE ALSO

     pem2openpgp(1), monkeysphere(1), monkeysphere(7), ssh(1),
     monkeysphere-authentication(8), monkeysphere-host(8)