sshlp_crt

#!/bin/sh
#
# Create a key pair, send it to LastPass
#

if [ $# -lt 2 ]; then
  echo "$0: create a key pair and store it in LastPass" >&2
  echo "Syntax: $0 <client> <server>" >&2
  echo "  where <client> is the name of the ssh 'client' side" >&2
  echo "  and <server> is the name of the ssh 'server' side" >&2
  echo "  where you will use the private key on the client side" >&2
  echo "  and you will use the public key on the server side" >&2
  exit 4
fi

CLIENT="$1"
SERVER="$2"

MYDIR=$( cd $( dirname "$0" ) ; echo $PWD)
CLOUD_FN="${MYDIR}/sshlp.fn"

if [ -f "${CLOUD_FN}" ]; then
  . "${CLOUD_FN}"
fi

if ! passphrase=$( lpass generate passphrase 20 ) ; then
  echo "Unable to generate passphrase" >&2
  exit 4
fi

tmp="$TMPDIR/$$_tmp"
public_file="${tmp}.pub"
private_file="${tmp}"
if ! ssh-keygen -t rsa -b 4096 -N "${passphrase}" -f "${tmp}" >/dev/null 2>&1 ; then
  echo "Unable to generate private/public ssh key pair" >&2
  exit 4
fi

private_key=$( cat "${private_file}" )
public_key=$( cat "${public_file}" )
if ! rm "${private_file}" "${public_file}" ; then
  echo "Unable to remove key files!! Keys not sent to LastPass!!" >&2
  exit 4
fi
date=$( date "+%b %d %Y" )

entry=$( cat << zz
NoteType: SSH Key
Language: en-US
Bit Strength: 4096
Format: rsa
Passphrase: ${passphrase}
Private Key: ${private_key}
Public Key: ${public_key}
Hostname: ${SERVER}
Date: ${date}
Notes:
client: ${CLIENT} server: ${SERVER}
zz
)

echo "${entry}" | lpass add --sync=now --non-interactive --note-type=ssh-key ssh/${CLIENT}^${SERVER} >/dev/null 2>&1