323 lines
10 KiB
Python
Executable File
323 lines
10 KiB
Python
Executable File
#!/usr/bin/env python3
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"""
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CopyLeft 2020 Pascal Engélibert <tuxmain@zettascript.org>
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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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"""
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__version__ = "1.3.1"
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import os, sys, duniterpy.key, libnacl, base58, base64, getpass
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def getargv(arg:str, default:str="", n:int=1, args:list=sys.argv) -> str:
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if arg in args and len(args) > args.index(arg)+n:
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return args[args.index(arg)+n]
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else:
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return default
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def read_data(data_path, b=True):
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if data_path == "-":
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if b:
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return sys.stdin.buffer.read()
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else:
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return sys.stdin.read()
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else:
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return open(os.path.expanduser(data_path), "rb" if b else "r").read()
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def write_data(data, result_path):
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if result_path == "-":
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os.fdopen(sys.stdout.fileno(), 'wb').write(data)
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else:
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open(os.path.expanduser(result_path), "wb").write(data)
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def encrypt(data, pubkey):
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return duniterpy.key.PublicKey(pubkey).encrypt_seal(data)
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def decrypt(data, privkey):
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return privkey.decrypt_seal(data)
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def box_encrypt(data, privkey, pubkey, nonce=None, attach_nonce=False):
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signer = libnacl.sign.Signer(privkey.seed)
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sk = libnacl.public.SecretKey(libnacl.crypto_sign_ed25519_sk_to_curve25519(signer.sk))
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verifier = libnacl.sign.Verifier(base58.b58decode(pubkey).hex())
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pk = libnacl.public.PublicKey(libnacl.crypto_sign_ed25519_pk_to_curve25519(verifier.vk))
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box = libnacl.public.Box(sk.sk, pk.pk)
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data = box.encrypt(data, nonce) if nonce else box.encrypt(data)
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return data if attach_nonce else data[24:]
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def box_decrypt(data, privkey, pubkey, nonce=None):
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signer = libnacl.sign.Signer(privkey.seed)
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sk = libnacl.public.SecretKey(libnacl.crypto_sign_ed25519_sk_to_curve25519(signer.sk))
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verifier = libnacl.sign.Verifier(base58.b58decode(pubkey).hex())
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pk = libnacl.public.PublicKey(libnacl.crypto_sign_ed25519_pk_to_curve25519(verifier.vk))
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box = libnacl.public.Box(sk.sk, pk.pk)
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return box.decrypt(data, nonce) if nonce else box.decrypt(data)
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def sign(data, privkey):
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return privkey.sign(data)
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def verify(data, pubkey):
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try:
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ret = libnacl.sign.Verifier(duniterpy.key.PublicKey(pubkey).hex_pk()).verify(data)
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sys.stderr.write("Signature OK!\n")
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return ret
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except ValueError:
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sys.stderr.write("Bad signature!\n")
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exit(1)
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def get_privkey(privkey_path, privkey_format):
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if privkey_format == "pubsec":
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if privkey_path == "*":
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privkey_path = "privkey.pubsec"
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return duniterpy.key.SigningKey.from_pubsec_file(privkey_path)
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elif privkey_format == "cred":
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if privkey_path == "*":
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privkey_path = "-"
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if privkey_path == "-":
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return duniterpy.key.SigningKey.from_credentials(getpass.getpass("Salt: "), getpass.getpass("Password: "))
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else:
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return duniterpy.key.SigningKey.from_credentials_file(privkey_path)
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elif privkey_format == "seedh":
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if privkey_path == "*":
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privkey_path = "authfile.seedhex"
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return duniterpy.key.SigningKey.from_seedhex(read_data(privkey_path, False))
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elif privkey_format == "wif":
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if privkey_path == "*":
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privkey_path = "authfile.wif"
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return duniterpy.key.SigningKey.from_wif_or_ewif_file(privkey_path)
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elif privkey_format == "wifh":
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if privkey_path == "*":
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privkey_path = "authfile.wif"
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return duniterpy.key.SigningKey.from_wif_or_ewif_hex(privkey_path)
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elif privkey_format == "ssb":
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if privkey_path == "*":
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privkey_path = "secret"
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return duniterpy.key.SigningKey.from_ssb_file(privkey_path)
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elif privkey_format == "key":
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if privkey_path == "*":
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privkey_path = "authfile.key"
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return duniterpy.key.SigningKey.from_private_key(privkey_path)
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elif privkey_format == "ipfs-keystore":
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if privkey_path == "*":
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privkey_path = "key_self"
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return duniterpy.key.SigningKey(read_data(privkey_path)[4:36])
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print("Error: unknown privkey format")
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def format_privkey(privkey, output_privkey_format):
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if output_privkey_format == "pubsec":
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return "Type: PubSec\nVersion: 1\npub: {}\nsec: {}".format(privkey.pubkey, base58.b58encode(privkey.sk).decode()).encode()
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elif output_privkey_format == "seedh":
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return privkey.hex_seed()
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elif output_privkey_format == "ipfs-keystore":
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return b"\x08\x01\x12@"+privkey.sk
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print("Error: unknown output privkey format")
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def fill_pubkey(pubkey, length=32):
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while pubkey[0] == 0:
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pubkey = pubkey[1:]
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return b"\x00"*(length-len(pubkey)) + pubkey
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def pubkey_checksum(pubkey, length=32, clength=3):
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return base58.b58encode(libnacl.crypto_hash_sha256(libnacl.crypto_hash_sha256(fill_pubkey(base58.b58decode(pubkey), length)))).decode()[:clength]
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# returns (pubkey:bytes|None, deprecated_length:bool)
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def check_pubkey(pubkey):
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if ":" in pubkey:
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parts = pubkey.split(":")
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if len(parts[1]) < 3 or len(parts[1]) > 32:
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return (None, False)
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for i in range(32, 0, -1):
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if pubkey_checksum(parts[0], i, len(parts[1])) == parts[1]:
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return (parts[0], i < 32)
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return (None, False)
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return (pubkey, False)
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fmt = {
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"raw": lambda data: data,
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"16": lambda data: data.hex().encode(),
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"32": lambda data: base64.b32encode(data),
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"58": lambda data: base58.b58encode(data),
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"64": lambda data: base64.b64encode(data),
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"64u": lambda data: base64.urlsafe_b64encode(data),
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"85": lambda data: base64.b85encode(data),
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}
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defmt = {
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"raw": lambda data: data,
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"16": lambda data: bytes.fromhex(data),
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"32": lambda data: base64.b32decode(data),
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"58": lambda data: base58.b58decode(data),
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"64": lambda data: base64.b64decode(data),
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"85": lambda data: base64.b85decode(data),
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}
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def show_help():
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print("""Usage:
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python3 natools.py <command> [options]
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Commands:
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encrypt Encrypt data
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decrypt Decrypt data
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box-encrypt Encrypt data (NaCl box)
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box-decrypt Decrypt data (NaCl box)
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sign Sign data
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verify Verify data
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pubkey Display pubkey
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privkey Display private key
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pk Display b58 pubkey shorthand
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Options:
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-c Display pubkey checksum
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-f <fmt> Private key format (default: cred)
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key cred pubsec seedh ssb wif wifh ipfs-keystore
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-F <fmt> Output private key format (default: pubsec)
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pubsec seedh ipfs-keystore
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-i <path> Input file path (default: -)
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-I <fmt> Input format: raw 16 32 58 64 85 (default: raw)
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-k <path> Privkey file path (* for auto) (default: *)
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-n <nonce> Nonce (b64, 24 bytes) (for NaCl box)
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-N Attach nonce to output (for NaCl box encryption)
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--noinc Do not include msg after signature
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-o <path> Output file path (default: -)
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-O <fmt> Output format: raw 16 32 58 64 64u 85 (default: raw)
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-p <str> Pubkey (base58)
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--help Show help
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--version Show version
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--debug Debug mode (display full errors)
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Note: "-" means stdin or stdout.
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""")
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if __name__ == "__main__":
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if "--help" in sys.argv:
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show_help()
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exit()
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if "--version" in sys.argv:
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print(__version__)
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exit()
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privkey_format = getargv("-f", "cred")
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output_privkey_format = getargv("-F", "pubsec")
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data_path = getargv("-i", "-")
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privkey_path = getargv("-k", "*")
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pubkey = getargv("-p")
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result_path = getargv("-o", "-")
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output_format = getargv("-O", "raw")
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input_format = getargv("-I", "raw")
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if pubkey:
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pubkey, len_deprecated = check_pubkey(pubkey)
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if not pubkey:
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print("Invalid pubkey checksum! Please check spelling.")
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exit(1)
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if len(base58.b58decode(pubkey)) > 32:
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print("Invalid pubkey: too long!")
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exit(1)
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if len_deprecated:
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print("Warning: valid pubkey checksum, but deprecated format (truncating zeros)")
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try:
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if sys.argv[1] == "encrypt":
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if not pubkey:
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print("Please provide pubkey!")
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exit(1)
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write_data(fmt[output_format](encrypt(defmt[input_format](read_data(data_path)), pubkey)), result_path)
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elif sys.argv[1] == "decrypt":
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write_data(fmt[output_format](decrypt(defmt[input_format](read_data(data_path)), get_privkey(privkey_path, privkey_format))), result_path)
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elif sys.argv[1] == "box-encrypt":
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if not pubkey:
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print("Please provide pubkey!")
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exit(1)
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nonce = getargv("-n", None)
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if nonce:
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nonce = base64.b64decode(nonce)
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attach_nonce = "-N" in sys.argv
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write_data(fmt[output_format](box_encrypt(defmt[input_format](read_data(data_path)), get_privkey(privkey_path, privkey_format), pubkey, nonce, attach_nonce)), result_path)
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elif sys.argv[1] == "box-decrypt":
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if not pubkey:
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print("Please provide pubkey!")
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exit(1)
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nonce = getargv("-n", None)
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if nonce:
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nonce = base64.b64decode(nonce)
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write_data(fmt[output_format](box_decrypt(defmt[input_format](read_data(data_path)), get_privkey(privkey_path, privkey_format), pubkey, nonce)), result_path)
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elif sys.argv[1] == "sign":
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data = defmt[input_format](read_data(data_path))
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signed = sign(data, get_privkey(privkey_path, privkey_format))
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if "--noinc" in sys.argv:
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signed = signed[:len(signed)-len(data)]
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write_data(fmt[output_format](signed), result_path)
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elif sys.argv[1] == "verify":
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if not pubkey:
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print("Please provide pubkey!")
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exit(1)
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write_data(fmt[output_format](verify(defmt[input_format](read_data(data_path)), pubkey)), result_path)
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elif sys.argv[1] == "pubkey":
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if pubkey:
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if "-c" in sys.argv and output_format == "58":
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write_data("{}:{}".format(pubkey, pubkey_checksum(pubkey)).encode(), result_path)
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else:
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write_data(fmt[output_format](base58.b58decode(pubkey)), result_path)
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else:
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pubkey = get_privkey(privkey_path, privkey_format).pubkey
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if "-c" in sys.argv and output_format == "58":
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write_data("{}:{}".format(pubkey, pubkey_checksum(pubkey)).encode(), result_path)
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else:
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write_data(fmt[output_format](base58.b58decode(pubkey)), result_path)
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elif sys.argv[1] == "privkey":
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privkey = get_privkey(privkey_path, privkey_format)
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write_data(fmt[output_format](format_privkey(privkey, output_privkey_format)), result_path)
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elif sys.argv[1] == "pk":
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if not pubkey:
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pubkey = get_privkey(privkey_path, privkey_format).pubkey
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if "-c" in sys.argv:
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print("{}:{}".format(pubkey, pubkey_checksum(pubkey)))
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else:
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print(pubkey)
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else:
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show_help()
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except Exception as e:
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if "--debug" in sys.argv:
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0/0 # DEBUG MODE (raise error when handling error to display backtrace)
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sys.stderr.write("Error: {}\n".format(e))
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show_help()
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exit(1)
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