490 lines
20 KiB
Python
Executable File
490 lines
20 KiB
Python
Executable File
#!/usr/bin/env python3
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# link: https://git.p2p.legal/aya/dpgpid/
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# desc: generate ed25519 keys suitable for duniter or ipfs
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# Copyleft 2022 Yann Autissier <aya@asycn.io>
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# all crypto science belongs to Pascal Engélibert <tuxmain@zettascript.org>
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# coming from files available at https://git.p2p.legal/qo-op/Astroport.ONE/tools
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# gpgme stuff has been provided by Ben McGinnes
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# and comes from http://files.au.adversary.org/crypto/gpgme-python-howto.html
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# gpg key extraction is taken from work of Simon Vareille available at
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# https://gist.github.com/SimonVareille/fda49baf5f3e15b5c88e25560aeb2822
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU Affero General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU Affero General Public License for more details.
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# You should have received a copy of the GNU Affero General Public License
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# along with this program. If not, see <https://www.gnu.org/licenses/>.
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import argparse
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import base58
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import base64
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import configparser
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import crypto_pb2
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import cryptography.hazmat.primitives.asymmetric.ed25519 as ed25519
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from cryptography.hazmat.primitives import serialization
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import duniterpy.key
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import gpg
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import logging as log
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import nacl.bindings
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import nacl.encoding
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import pgpy
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import pynentry
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from SecureBytes import clearmem
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import os
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import re
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import struct
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import sys
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import time
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import warnings
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__version__='0.0.1'
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class keygen:
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def __init__(self):
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self.parser = argparse.ArgumentParser()
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self.parser.add_argument(
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"-d",
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"--debug",
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action="store_true",
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help="show debug informations (WARNING: THIS WILL PRINT PRIVATE KEY VALUE)",
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)
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self.parser.add_argument(
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"-i",
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"--input",
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dest="input",
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default=None,
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help="read public and secret keys in pubsec format from file INPUT",
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)
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self.parser.add_argument(
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"-g",
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"--gpg",
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action="store_true",
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help="use gpg key from user id matched by username option as input",
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)
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self.parser.add_argument(
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"-o",
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"--output",
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dest="output",
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default=None,
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help="write public and secret keys to file OUTPUT",
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)
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self.parser.add_argument(
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"-q",
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"--quiet",
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action="store_true",
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help="show only errors",
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)
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self.parser.add_argument(
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"-t",
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"--type",
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dest="type",
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default="ipfs",
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help="output key type : [ duniter | ipfs ]",
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)
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self.parser.add_argument(
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"-v",
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"--verbose",
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action="store_true",
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help="show more informations",
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)
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self.parser.add_argument(
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"--version",
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action="store_true",
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help="show version and exit",
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)
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self.parser.add_argument(
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'username',
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nargs="?",
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)
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self.parser.add_argument(
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'password',
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nargs="?",
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)
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def _check_args(self, args):
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log.debug("keygen._check_args(%s)" % args)
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if self.input is None:
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if self.password is None:
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if self.username is None:
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self.parser.error(f"keygen requires an input file or username args")
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def _cleanup(self):
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log.debug("keygen._cleanup()")
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if hasattr(keygen, 'base58_secret_key'):
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clearmem(self.base58_secret_key)
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if hasattr(keygen, 'duniter'):
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if hasattr(keygen.duniter, 'sk'):
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clearmem(self.duniterpy.sk)
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if hasattr(keygen, 'ed25519_secret_bytes'):
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clearmem(self.ed25519_secret_bytes)
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if hasattr(keygen, 'ed25519_secret_pem_pkcs8'):
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clearmem(self.ed25519_secret_pem_pkcs8)
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if hasattr(keygen, 'ipfs_privkey'):
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clearmem(self.ipfs_privkey)
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if hasattr(keygen, 'password'):
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clearmem(self.password)
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if hasattr(keygen, 'pgpy'):
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clearmem(self.pgpy._key.keymaterial.p)
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clearmem(self.pgpy._key.keymaterial.q)
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clearmem(self.pgpy._key.keymaterial.s)
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if hasattr(keygen, 'pgpy_key_seed'):
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clearmem(self.pgpy_key_seed)
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if hasattr(keygen, 'pgpy_key_value'):
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clearmem(self.pgpy_key_value)
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def _invalid_type(self):
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log.debug("keygen._invalid_type()")
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self.parser.error(f"type: {self.type} is not valid.")
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def _load_config(self):
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log.debug("keygen._load_config()")
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self.config = configparser.RawConfigParser()
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config_dir = os.path.join(os.environ.get('XDG_CONFIG_HOME', os.path.expanduser('~/.config')), 'dpgpid')
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log.debug("config_dir=%s" % config_dir)
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self.config.read( [config_dir + '/keygen.conf'] )
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def _run(self, argv):
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args = self.parser.parse_args(argv)
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vars(self).update(vars(args))
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# display version
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if args.version:
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version()
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sys.exit()
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# define log format
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log_format='%(asctime)s %(levelname)s: %(message)s'
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log_datefmt='%Y/%m/%d %H:%M:%S'
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if args.debug:
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log_level='DEBUG'
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elif args.quiet:
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log_level='ERROR'
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elif args.verbose:
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log_level='INFO'
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else:
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log_level='WARNING'
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log.basicConfig(format=log_format, datefmt=log_datefmt, level=log_level)
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log.debug("keygen.run(%s)" % argv)
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self._check_args(args)
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self._load_config()
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# self.gpg = gpg.Context(armor=True, offline=True, homedir=GNUPGHOME)
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self.gpg = gpg.Context( armor=True,
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offline=True)
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self.gpg.set_passphrase_cb(self.gpg_passphrase_cb)
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self.ed25519(args)
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method = getattr(self, f'do_{self.type}', self._invalid_type)
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return method()
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def base58_from_ed25519(self):
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log.debug("keygen.base58_from_ed25519()")
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self.base58_public_key = base58.b58encode(self.ed25519_public_bytes).decode('ascii')
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self.base58_secret_key = base58.b58encode(self.ed25519_secret_bytes).decode('ascii')
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log.debug("keygen.base58_public_key=%s" % self.base58_public_key)
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log.debug("keygen.base58_secret_key=%s" % self.base58_secret_key)
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def base58_from_pubsec(self):
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log.debug("keygen.base58_from_pubsec()")
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for line in open(self.input, "r"):
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if re.search("pub", line):
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self.base58_public_key = line.replace('\n','').split(': ')[1]
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elif re.search("sec", line):
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self.base58_secret_key = line.replace('\n','').split(': ')[1]
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def do_duniter(self):
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log.debug("keygen.do_duniter()")
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self.base58_from_ed25519()
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if self.output is None:
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print("pub: %s" % self.base58_public_key)
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print("sec: %s" % self.base58_secret_key)
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else:
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with open(self.output, "w") as fh:
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fh.write(f"""Type: PubSec
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Version: 1
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pub: {self.base58_public_key}
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sec: {self.base58_secret_key}
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"""
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)
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os.chmod(self.output, 0o600)
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self._cleanup()
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def do_ipfs(self):
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log.debug("keygen.do_ipfs()")
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self.ipfs_from_ed25519()
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if self.output is None:
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print("PeerID: %s" % self.ipfs_peerid)
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print("PrivKEY: %s" % self.ipfs_privkey)
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else:
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# with open(self.output, "wb") as fh:
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# fh.write(self.ipfs_libp2p_protobuf_key)
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with open(self.output, "w") as fh:
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fh.write(self.ed25519_secret_pem_pkcs8)
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os.chmod(self.output, 0o600)
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self._cleanup()
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def duniterpy_from_salt_and_password(self):
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log.debug("keygen.duniterpy_from_salt_and_password()")
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scrypt_params = duniterpy.key.scrypt_params.ScryptParams(
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int(self.config.get('scrypt', 'n')) if self.config.has_option('scrypt', 'n') else 4096,
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int(self.config.get('scrypt', 'r')) if self.config.has_option('scrypt', 'r') else 16,
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int(self.config.get('scrypt', 'p')) if self.config.has_option('scrypt', 'p') else 1,
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int(self.config.get('scrypt', 'sl')) if self.config.has_option('scrypt', 'sl') else 32,
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)
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if not self.password:
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with pynentry.PynEntry() as p:
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p.description = f"""Please enter the passord for username "{self.username}"."""
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p.prompt = 'Passsord:'
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try:
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self.password = p.get_pin()
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except pynentry.PinEntryCancelled:
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log.warning('Cancelled! Goodbye.')
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exit(2)
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self.duniterpy = duniterpy.key.SigningKey.from_credentials(
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self.username,
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self.password,
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scrypt_params
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)
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def ed25519(self, args):
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log.debug("keygen.ed25519(%s)" % args)
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if args.gpg is True:
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self.ed25519_from_gpg()
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elif self.input is None:
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self.duniterpy_from_salt_and_password()
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self.ed25519_from_duniterpy()
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else:
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self.base58_from_pubsec()
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self.ed25519_from_base58()
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def ed25519_from_base58(self):
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log.debug("keygen.ed25519_from_base58()")
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self.ed25519_public_bytes = base58.b58decode(self.base58_public_key)
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self.ed25519_secret_bytes = base58.b58decode(self.base58_secret_key)
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log.debug("keygen.ed25519_public_bytes=%s" % self.ed25519_public_bytes)
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log.debug("keygen.ed25519_secret_bytes=%s" % self.ed25519_secret_bytes)
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def ed25519_from_duniterpy(self):
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log.debug("keygen.ed25519_from_duniterpy()")
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self.ed25519_public_bytes = base58.b58decode(self.duniterpy.pubkey)
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self.ed25519_secret_bytes = self.duniterpy.sk
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log.debug("keygen.ed25519_public_bytes=%s" % self.ed25519_public_bytes)
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log.debug("keygen.ed25519_secret_bytes=%s" % self.ed25519_secret_bytes)
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def ed25519_from_gpg(self):
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log.debug("keygen.ed25519_from_gpg()")
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self.gpg_seckeys = list(self.gpg.keylist(pattern=self.username, secret=True))
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log.debug("keygen.gpg_seckeys=%s" % self.gpg_seckeys)
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if not self.gpg_seckeys:
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log.error(f"""Unable to find any key matching username "{self.username}".""")
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exit(1)
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else:
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self.gpg_seckey = self.gpg_seckeys[0]
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log.info(f"""Found key id "{self.gpg_seckey.fpr}" matching username "{self.username}".""")
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log.debug("keygen.gpg_seckey.__repr__=%s" % self.gpg_seckey.__repr__)
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log.debug("keygen.gpg_seckey.fpr=%s" % self.gpg_seckey.fpr)
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self.armored_pgp_public_key = self.gpg.key_export(self.gpg_seckey.fpr)
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log.debug("keygen.armored_pgp_public_key=%s" % self.armored_pgp_public_key)
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if self.password:
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self.gpg.set_pinentry_mode(gpg.constants.PINENTRY_MODE_LOOPBACK)
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self.armored_pgp_secret_key = self.gpg.key_export_secret(self.gpg_seckey.fpr)
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log.debug("keygen.armored_pgp_secret_key=%s" % self.armored_pgp_secret_key)
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if not self.armored_pgp_secret_key:
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log.error(f"""Unable to export secret key id "{self.gpg_seckey.fpr}" of user "{self.username}". Please check your password!""")
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exit(2)
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with warnings.catch_warnings():
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# remove CryptographyDeprecationWarning about deprecated
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# SymmetricKeyAlgorithm IDEA, CAST5 and Blowfish (PGPy v0.5.4)
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warnings.simplefilter('ignore')
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self.pgpy, _ = pgpy.PGPKey.from_blob(self.armored_pgp_secret_key)
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self.ed25519_from_pgpy()
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def ed25519_from_pgpy(self):
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log.debug("keygen.ed25519_from_pgpy()")
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log.debug("keygen.pgpy.fingerprint.keyid=%s" % self.pgpy.fingerprint.keyid)
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log.debug("keygen.pgpy.is_protected=%s" % self.pgpy.is_protected)
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if self.pgpy.is_protected:
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if not self.password:
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with pynentry.PynEntry() as p:
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p.description = f"""The exported key id "{self.pgpy.fingerprint.keyid}" of user "{self.username}" is password protected.
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Please enter the passphrase again to unlock it.
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"""
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p.prompt = 'Passphrase:'
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try:
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self.password = p.get_pin()
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except pynentry.PinEntryCancelled:
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log.warning('Cancelled! Goodbye.')
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exit(2)
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try:
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with warnings.catch_warnings():
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# remove CryptographyDeprecationWarning about deprecated
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# SymmetricKeyAlgorithm IDEA, CAST5 and Blowfish (PGPy v0.5.4)
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warnings.simplefilter('ignore')
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with self.pgpy.unlock(self.password):
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assert self.pgpy.is_unlocked
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log.debug("keygen.pgpy.is_unlocked=%s" % self.pgpy.is_unlocked)
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self.pgpy_key_seed_from_pgpy()
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except Exception as e:
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log.error(f"""Unable to unlock secret key id "{self.gpg_seckey.fpr}" of user "{self.username}". Please check your password!""")
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exit(2)
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else:
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self.pgpy_key_seed_from_pgpy()
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self.ed25519_public_bytes, self.ed25519_secret_bytes = nacl.bindings.crypto_sign_seed_keypair(self.pgpy_key_seed)
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log.debug("keygen.ed25519_public_bytes=%s" % self.ed25519_public_bytes)
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log.debug("keygen.ed25519_secret_bytes=%s" % self.ed25519_secret_bytes)
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def gpg_passphrase_cb(self, uid_hint, passphrase_info, prev_was_bad):
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log.debug("keygen.gpg_passphrase_cb(%s, %s, %s)" % (uid_hint, passphrase_info, prev_was_bad))
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return self.password
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def ipfs_from_ed25519(self):
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log.debug("keygen.ipfs_from_ed25519()")
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# PeerID
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ipfs_pid = base58.b58encode(b'\x00$\x08\x01\x12 ' + self.ed25519_public_bytes)
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self.ipfs_peerid = ipfs_pid.decode('ascii')
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log.debug("keygen.ipfs_peerid=%s" % self.ipfs_peerid)
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# PrivKey
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pkey = crypto_pb2.PrivateKey()
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pkey.Type = crypto_pb2.KeyType.Ed25519
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pkey.Data = self.ed25519_secret_bytes
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self.ipfs_privkey = base64.b64encode(pkey.SerializeToString()).decode('ascii')
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log.debug("keygen.ipfs_privkey=%s" % self.ipfs_privkey)
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# libp2p-protobuf-cleartext format for ipfs key import
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self.ipfs_libp2p_protobuf_key = pkey.SerializeToString()
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# pem-pkcs8-cleartext format for ipfs key import
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self.pem_pkcs8_from_ed25519()
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def pem_pkcs8_from_ed25519(self):
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log.debug("keygen.pem_pkcs8_from_ed25519()")
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self.ed25519_secret_pem_pkcs8 = ed25519.Ed25519PrivateKey.from_private_bytes(self.ed25519_secret_bytes[:32]).private_bytes(encoding=serialization.Encoding.PEM, format=serialization.PrivateFormat.PKCS8, encryption_algorithm=serialization.NoEncryption()).decode('ascii')
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log.debug("keygen.ed25519_secret_pem_pkcs8=%s" % self.ed25519_secret_pem_pkcs8)
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def pgpy_key_flags(self):
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log.debug("keygen.pgpy_key_flags()")
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flags = []
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strs = {pgpy.constants.KeyFlags.Certify : 'C',
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pgpy.constants.KeyFlags.Sign : 'S',
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pgpy.constants.KeyFlags.EncryptCommunications : 'E',
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pgpy.constants.KeyFlags.Authentication : 'A'}
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for sig in self.pgpy.self_signatures:
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if not sig.is_expired:
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flags += sig.key_flags
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self.pgpy_key_flags = "".join(strs.get(flag, '') for flag in flags)
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def pgpy_key_seed_from_pgpy(self):
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log.debug("keygen.pgpy_key_seed_from_pgpy()")
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self.pgpy_key_type()
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if self.pgpy_key_type == 'RSA':
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log.debug("keygen.pgpy._key.keymaterial.p=%s" % self.pgpy._key.keymaterial.p)
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log.debug("keygen.pgpy._key.keymaterial.q=%s" % self.pgpy._key.keymaterial.q)
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# custom seed: use sha256 hash of (p + q)
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self.pgpy_key_seed = nacl.bindings.crypto_hash_sha256(long_to_bytes(self.pgpy._key.keymaterial.p + self.pgpy._key.keymaterial.q))
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p = long_to_bytes(self.pgpy._key.keymaterial.p)
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q = long_to_bytes(self.pgpy._key.keymaterial.q)
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self.pgpy_key_value = "".join([f"{c:02x}" for c in p]) + "".join([f"{c:02x}" for c in q])
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self.pgpy_key_size = (len(p) + len(q)) * 8
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log.debug("keygen.pgpy_key_seed=%s" % self.pgpy_key_seed)
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log.debug("keygen.pgpy_key_value=%s" % self.pgpy_key_value)
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log.debug("keygen.pgpy_key_size=%s" % self.pgpy_key_size)
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elif self.pgpy_key_type in ('ECDSA', 'EdDSA', 'ECDH'):
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log.debug("keygen.pgpy._key.keymaterial.s=%s" % self.pgpy._key.keymaterial.s)
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self.pgpy_key_seed = long_to_bytes(self.pgpy._key.keymaterial.s)
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self.pgpy_key_value = "".join([f"{c:02x}" for c in self.pgpy_key_seed])
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self.pgpy_key_size = len(self.pgpy_key_seed)*8
|
|
log.debug("keygen.pgpy_key_seed=%s" % self.pgpy_key_seed)
|
|
log.debug("keygen.pgpy_key_value=%s" % self.pgpy_key_value)
|
|
log.debug("keygen.pgpy_key_size=%s" % self.pgpy_key_size)
|
|
else:
|
|
raise NotImplementedError(f"Getting seed from {self.pgpy_key_type} key is not implemented")
|
|
|
|
def pgpy_key_type(self):
|
|
log.debug("keygen.pgpy_key_type()")
|
|
if isinstance(self.pgpy._key.keymaterial, pgpy.packet.fields.RSAPriv):
|
|
self.pgpy_key_type = 'RSA'
|
|
elif isinstance(self.pgpy._key.keymaterial, pgpy.packet.fields.DSAPriv):
|
|
self.pgpy_key_type = 'DSA'
|
|
elif isinstance(self.pgpy._key.keymaterial, pgpy.packet.fields.ElGPriv):
|
|
self.pgpy_key_type = 'ElGamal'
|
|
elif isinstance(self.pgpy._key.keymaterial, pgpy.packet.fields.ECDSAPriv):
|
|
self.pgpy_key_type = 'ECDSA'
|
|
elif isinstance(self.pgpy._key.keymaterial, pgpy.packet.fields.EdDSAPriv):
|
|
self.pgpy_key_type = 'EdDSA'
|
|
elif isinstance(self.pgpy._key.keymaterial, pgpy.packet.fields.ECDHPriv):
|
|
self.pgpy_key_type = 'ECDH'
|
|
else:
|
|
self.pgpy_key_type = 'undefined'
|
|
log.debug("keygen.pgpy_key_type=%s" % self.pgpy_key_type)
|
|
|
|
# long_to_bytes comes from PyCrypto, which is released into Public Domain
|
|
# https://github.com/dlitz/pycrypto/blob/master/lib/Crypto/Util/number.py
|
|
|
|
def bytes_to_long(s):
|
|
"""bytes_to_long(string) : long
|
|
Convert a byte string to a long integer.
|
|
This is (essentially) the inverse of long_to_bytes().
|
|
"""
|
|
acc = 0
|
|
unpack = struct.unpack
|
|
length = len(s)
|
|
if length % 4:
|
|
extra = (4 - length % 4)
|
|
s = b'\000' * extra + s
|
|
length = length + extra
|
|
for i in range(0, length, 4):
|
|
acc = (acc << 32) + unpack('>I', s[i:i+4])[0]
|
|
return acc
|
|
|
|
def long_to_bytes(n, blocksize=0):
|
|
"""long_to_bytes(n:long, blocksize:int) : string
|
|
Convert a long integer to a byte string.
|
|
If optional blocksize is given and greater than zero, pad the front of the
|
|
byte string with binary zeros so that the length is a multiple of
|
|
blocksize.
|
|
"""
|
|
# after much testing, this algorithm was deemed to be the fastest
|
|
s = b''
|
|
n = int(n)
|
|
pack = struct.pack
|
|
while n > 0:
|
|
s = pack('>I', n & 0xffffffff) + s
|
|
n = n >> 32
|
|
# strip off leading zeros
|
|
for i in range(len(s)):
|
|
if s[i] != b'\000'[0]:
|
|
break
|
|
else:
|
|
# only happens when n == 0
|
|
s = b'\000'
|
|
i = 0
|
|
s = s[i:]
|
|
# add back some pad bytes. this could be done more efficiently w.r.t. the
|
|
# de-padding being done above, but sigh...
|
|
if blocksize > 0 and len(s) % blocksize:
|
|
s = (blocksize - len(s) % blocksize) * b'\000' + s
|
|
return s
|
|
|
|
def main(argv=None):
|
|
if argv is None:
|
|
argv = sys.argv[1:]
|
|
|
|
cli = keygen()
|
|
return cli._run(argv)
|
|
|
|
def version(version=__version__):
|
|
print("%s v%s" % (sys.argv[0],version))
|
|
|
|
if __name__ == "__main__":
|
|
sys.exit(main())
|