Bash function to create a SSH key and upload to Lastpass using the Lastpass CLI.

create-sshkey.sh

# Usage: create-sshkey KEYNAME PASSPHRASE [COMMENT]
#     KEYNAME    = The file name used for the key.
#     PASSPHRASE = The pass phrase to be used.  If you wish to not use a passphrase just use a blank string (i.e. "")
#     COMMENT    = Optional Comment.  If skipped the KEYNAME will be used.
#
#   Example: create-sshkey my_secret.key "This is my secret passphrase" "An example key." 
function create-sshkey() {
  KEYNAME=$1
  PASSPHRASE=$2
  COMMENT=${3:-$KEYNAME}

  KEYGEN_CMD="ssh-keygen -t rsa -b 4096 -N \"${PASSPHRASE}\" -f ~/.ssh/${KEYNAME} -C '${COMMENT}' > ~/.ssh/${KEYNAME}.txt"
  eval "$KEYGEN_CMD"
  if [ -f  ~/.ssh/${KEYNAME} ] && [ -f ~/.ssh/${KEYNAME}.pub ] && [ -f ~/.ssh/${KEYNAME}.txt ]; then
    if [ -x "$(command -v lpass)" ]; then
      if [ $(lpass status --quiet && echo 0 || echo 1) -eq 1 ]; then
        echo
        read -r -p "This script requires Lastpass access. Please enter your Lastpass username " response
        if [ -n $response ]; then
          lpass login $response
        fi
      fi
    fi
    if [ -x "$(command -v lpass)" ] && [ $(lpass status --quiet && echo 0 || echo 1) -eq 0 ]; then
      echo -en "Date: $(date +%B,%d,%Y)\nPrivate Key: $(cat ~/.ssh/${KEYNAME})\nPublic Key: $(cat ~/.ssh/${KEYNAME}.pub)\nPassphrase: ${PASSPHRASE}\nFormat: rsa\nBit Strength: 4096\nNoteType: SSH Key\nNotes: ${KEYGEN_CMD}\n\n$(cat ~/.ssh/${KEYNAME}.txt)\n" | lpass add --sync=now --non-interactive --note-type=ssh-key "ssh keys/${KEYNAME}"
      rm ~/.ssh/${KEYNAME}.txt
    else
      echo "Unable to upload key to Lastpass. Skipping."
      cat ~/.ssh/${KEYNAME}.txt
    fi
  else
    echo "Problem generating key!"
    echo "  Keyname: $KEYNAME"
    echo "  Passphrase: $PASSPHRASE"
    echo "  Comment: $COMMENT"
    echo "  Command: $KEYGEN_CMD"
  fi
}