save_cleartext_ascii_armor_message.py

"""
Copyright  2014-2021 Vincent Texier <vit@free.fr>

DuniterPy 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 3 of the License, or
(at your option) any later version.

DuniterPy 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 <http://www.gnu.org/licenses/>.
"""

import getpass
import sys

from duniterpy import __version__

from duniterpy.key import AsciiArmor, SigningKey

# CONFIG #######################################

CLEARTEXT_AA_MESSAGE_PATH = "/tmp/duniter_cleartext_aa_message.txt"

################################################

if __name__ == "__main__":
    # prompt hidden user entry
    salt = getpass.getpass("Enter your passphrase (salt): ")

    # prompt hidden user entry
    password = getpass.getpass("Enter your password: ")

    # init SigningKey instance
    signing_key = SigningKey.from_credentials(salt, password)

    # Enter the multi-line message (stop with Ctrl-D below last line to end)
    print("Enter your message (Ctrl-D below last line to end):")
    message = sys.stdin.read()

    print("Message signed by puplic key : {pubkey}".format(pubkey=signing_key.pubkey))

    comment = "generated by Duniterpy {0}".format(__version__)
    # Dash escape the message and sign it
    aa_cleartext_message = AsciiArmor.create(
        message, None, [signing_key], None, signatures_comment=comment
    )

    # Save cleartext ascii armor message in a file
    with open(CLEARTEXT_AA_MESSAGE_PATH, "w") as file_handler:
        file_handler.write(aa_cleartext_message)

    print(
        "Cleartext Ascii Armor Message saved in file ./{0}".format(
            CLEARTEXT_AA_MESSAGE_PATH
        )
    )