86 lines
2.8 KiB
Python
86 lines
2.8 KiB
Python
#!/usr/bin/env python
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"""
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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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from ledgerblue.comm import getDongle
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from ledgerblue.commException import CommException
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import argparse
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import struct
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from decimal import Decimal
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from ethBase import Transaction, UnsignedTransaction
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from rlp import encode
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from rlp.utils import decode_hex, encode_hex, str_to_bytes
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def parse_bip32_path(path):
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if len(path) == 0:
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return ""
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result = ""
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elements = path.split('/')
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for pathElement in elements:
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element = pathElement.split('\'')
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if len(element) == 1:
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result = result + struct.pack(">I", int(element[0]))
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else:
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result = result + struct.pack(">I", 0x80000000 | int(element[0]))
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return result
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parser = argparse.ArgumentParser()
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parser.add_argument('--nonce', help="Nonce associated to the account")
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parser.add_argument('--gasprice', help="Network gas price")
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parser.add_argument('--startgas', help="startgas", default='21000')
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parser.add_argument('--amount', help="Amount to send in ether")
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parser.add_argument('--to', help="Destination address")
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parser.add_argument('--path', help="BIP 32 path to sign with")
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parser.add_argument('--data', help="Data to add, hex encoded")
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args = parser.parse_args()
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if args.path == None:
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args.path = "44'/60'/0'/0/0"
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if args.data == None:
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args.data = ""
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else:
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args.data = decode_hex(args.data[2:])
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amount = Decimal(args.amount) * 10**18
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tx = Transaction(
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nonce=int(args.nonce),
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gasprice=int(args.gasprice),
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startgas=int(args.startgas),
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to=decode_hex(args.to[2:]),
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value=int(amount),
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data=args.data
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)
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encodedTx = encode(tx, UnsignedTransaction)
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donglePath = parse_bip32_path(args.path)
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apdu = "e0040000".decode('hex') + chr(len(donglePath) + 1 + len(encodedTx)) + chr(len(donglePath) / 4) + donglePath + encodedTx
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dongle = getDongle(True)
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result = dongle.exchange(bytes(apdu))
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v = result[0]
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r = int(str(result[1:1 + 32]).encode('hex'), 16)
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s = int(str(result[1 + 32: 1 + 32 + 32]).encode('hex'), 16)
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tx = Transaction(tx.nonce, tx.gasprice, tx.startgas, tx.to, tx.value, tx.data, v, r, s)
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print "Signed transaction " + encode_hex(encode(tx))
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