def test_convert_bip32_path_to_list_of_uint32(self):
self.assertEqual([0, 0x80000001, 0x80000001],
convert_bip32_path_to_list_of_uint32("m/0/-1/1'"))
self.assertEqual([], convert_bip32_path_to_list_of_uint32("m/"))
self.assertEqual(
[2147483692, 2147488889, 221],
convert_bip32_path_to_list_of_uint32("m/44'/5241'/221"))
def get_xpub(self, bip32_path, xtype):
self.checkDevice()
# bip32_path is of the form 44'/5'/1'
# S-L-O-W - we don't handle the fingerprint directly, so compute
# it manually from the previous node
# This only happens once so it's bearable
#self.get_client() # prompt for the PIN before displaying the dialog if necessary
#self.handler.show_message("Computing master public key")
bip32_path = bip32.normalize_bip32_derivation(bip32_path)
bip32_intpath = bip32.convert_bip32_path_to_list_of_uint32(bip32_path)
bip32_path = bip32_path[2:] # cut off "m/"
if len(bip32_intpath) >= 1:
prevPath = bip32.convert_bip32_intpath_to_strpath(bip32_intpath[:-1])[2:]
nodeData = self.dongleObject.getWalletPublicKey(prevPath)
publicKey = compress_public_key(nodeData['publicKey'])
fingerprint_bytes = hash_160(publicKey)[0:4]
childnum_bytes = bip32_intpath[-1].to_bytes(length=4, byteorder="big")
else:
fingerprint_bytes = bytes(4)
childnum_bytes = bytes(4)
nodeData = self.dongleObject.getWalletPublicKey(bip32_path)
publicKey = compress_public_key(nodeData['publicKey'])
depth = len(bip32_intpath)
return BIP32Node(xtype=xtype,
eckey=ecc.ECPubkey(bytes(publicKey)),
chaincode=nodeData['chainCode'],
depth=depth,
fingerprint=fingerprint_bytes,
child_number=childnum_bytes).to_xpub()
def expand_path(n):
return convert_bip32_path_to_list_of_uint32(n)