#!/usr/bin/env python

#

# Copyright (C) 2016 g10 Code GmbH

# Copyright (C) 2005 Igor Belyi <belyi@users.sourceforge.net>

# Copyright (C) 2002 John Goerzen <jgoerzen@complete.org>

#

# This program is free software; you can redistribute it and/or modify

# it under the terms of the GNU General Public License as published by

# the Free Software Foundation; either version 2 of the License, or

# (at your option) any later version.

#

# This program is distributed in the hope that it will be useful, but

# WITHOUT ANY WARRANTY; without even the implied warranty of

# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

# General Public License for more details.

#

# You should have received a copy of the GNU General Public License

# along with this program; if not, see <https://www.gnu.org/licenses/>.

from __future__ import absolute_import, print_function, unicode_literals

import sys

import gpg

del absolute_import, print_function, unicode_literals

with gpg.Context(armor=True) as c:

    recipients = []

    print("Enter name of your recipient(s), end with a blank line.")

    while True:

        line = input()

        if not line:

            break

        new = list(c.keylist(line))

        if not new:

            print("Matched no known keys.")

        else:

            print("Adding {}.".format(", ".join(k.uids[0].name for k in new)))

            recipients.extend(new)

    if not recipients:

        sys.exit("No recipients.")

    print("Encrypting for {}.".format(", ".join(

        k.uids[0].name for k in recipients)))

    ciphertext, _, _ = c.encrypt(b"This is my message,", recipients)

    sys.stdout.buffer.write(ciphertext)