97 lines
3.2 KiB
Python
97 lines
3.2 KiB
Python
"""
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*******************************************************************************
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* Ledger Blue
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* (c) 2016 Ledger
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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********************************************************************************
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"""
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import argparse
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def get_argparser():
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parser = argparse.ArgumentParser(description="""
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.. warning::
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Using this script undermines the security of the device. Caveat emptor.
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""")
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parser.add_argument("--apdu", help="Display APDU log", action='store_true')
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parser.add_argument("--id", help="Identity to initialize", type=auto_int)
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parser.add_argument("--pin", help="Set a PINs to backup the seed for future use")
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parser.add_argument("--prefix", help="Derivation prefix")
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parser.add_argument("--passphrase", help="Derivation passphrase")
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parser.add_argument("--words", help="Derivation phrase")
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return parser
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def auto_int(x):
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return int(x, 0)
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if __name__ == '__main__':
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from .ecWrapper import PrivateKey
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from .comm import getDongle
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from .hexParser import IntelHexParser, IntelHexPrinter
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from .hexLoader import HexLoader
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import struct
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import binascii
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import sys
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import getpass
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import unicodedata
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args = get_argparser().parse_args()
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if (args.id is None) or args.id > 2:
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raise Exception("Missing identity number [0-2]")
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dongle = getDongle(args.apdu)
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def enter_if_none_and_normalize(hint, strg):
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if strg is None: # or len(string) == 0: len 0 is accepted, to specify without being bothered by a message
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strg = getpass.getpass(hint)
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if len(strg) != 0 :
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strg = unicodedata.normalize('NFKD', u''+strg)
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return strg
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if (args.id < 2):
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args.pin = enter_if_none_and_normalize("PIN: ", args.pin)
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if args.pin is None or len(args.pin) == 0:
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raise Exception("Missing PIN for persistent identity")
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elif not args.pin is None:
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raise Exception("Can't set a PIN for the temporary identity")
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args.prefix = enter_if_none_and_normalize("Derivation prefix: ", args.prefix)
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args.passphrase = enter_if_none_and_normalize("Derivation passphrase: ", args.passphrase)
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args.words = enter_if_none_and_normalize("Derivation phrase: ", args.words)
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if args.pin:
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apdudata = bytearray([len(args.pin)]) + bytearray(args.pin, 'utf8')
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else:
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apdudata = bytearray([0])
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if args.prefix:
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apdudata += bytearray([len(args.prefix)]) + bytearray(args.prefix, 'utf8')
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else:
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apdudata += bytearray([0])
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if args.passphrase:
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apdudata += bytearray([len(args.passphrase)]) + bytearray(args.passphrase, 'utf8')
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else:
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apdudata += bytearray([0])
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if args.words:
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apdudata += bytearray([len(args.words)]) + bytearray(args.words, 'utf8')
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else:
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apdudata += bytearray([0])
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apdu = bytearray([0xE0, 0xD0, args.id, 0x00, len(apdudata)]) + apdudata
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dongle.exchange(apdu, timeout=3000)
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