blue-loader-python/ledgerblue/derivePassphrase.py

48 lines
1.5 KiB
Python

"""
*******************************************************************************
* Ledger Blue
* (c) 2016 Ledger
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
********************************************************************************
"""
from .comm import getDongle
import argparse
import getpass
import unicodedata
import sys
def auto_int(x):
return int(x, 0)
parser = argparse.ArgumentParser()
parser.add_argument("--persistent", help="Persist passphrase as secondary PIN", action='store_true')
args = parser.parse_args()
dongle = getDongle(False)
passphrase = getpass.getpass("Enter BIP39 passphrase : ")
if isinstance(passphrase, bytes):
passphrase = passphrase.decode(sys.stdin.encoding)
if len(passphrase) != 0:
if args.persistent:
p1 = 0x02
else:
p1 = 0x01
passphrase = unicodedata.normalize('NFKD', passphrase)
apdu = bytearray([0xE0, 0xD0, p1, 0x00, len(passphrase)]) + bytearray(passphrase, 'utf8')
dongle.exchange(apdu, timeout=300)