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bip32: add new test vectors from BIP
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also yet-to-be-merged test from bitcoin/bips#1030
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SomberNight committed Feb 18, 2021
1 parent bab22c8 commit b856336
Showing 1 changed file with 16 additions and 8 deletions.
24 changes: 16 additions & 8 deletions electrum/tests/test_bitcoin.py
Original file line number Diff line number Diff line change
Expand Up @@ -463,23 +463,23 @@ class Test_xprv_xpub(ElectrumTestCase):
'xtype': 'p2wpkh'},
)

def _do_test_bip32(self, seed: str, sequence):
def _do_test_bip32(self, seed: str, sequence: str):
node = BIP32Node.from_rootseed(bfh(seed), xtype='standard')
xprv, xpub = node.to_xprv(), node.to_xpub()
self.assertEqual("m/", sequence[0:2])
sequence = sequence[2:]
for n in sequence.split('/'):
if n[-1] != "'":
xpub2 = BIP32Node.from_xkey(xpub).subkey_at_public_derivation(n).to_xpub()
node = BIP32Node.from_xkey(xprv).subkey_at_private_derivation(n)
int_path = convert_bip32_path_to_list_of_uint32(sequence)
for n in int_path:
if n & bip32.BIP32_PRIME == 0:
xpub2 = BIP32Node.from_xkey(xpub).subkey_at_public_derivation([n]).to_xpub()
node = BIP32Node.from_xkey(xprv).subkey_at_private_derivation([n])
xprv, xpub = node.to_xprv(), node.to_xpub()
if n[-1] != "'":
if n & bip32.BIP32_PRIME == 0:
self.assertEqual(xpub, xpub2)

return xpub, xprv

def test_bip32(self):
# see https://en.bitcoin.it/wiki/BIP_0032_TestVectors
# and https://github.com/bitcoin/bips/blob/master/bip-0032.mediawiki#Test_Vectors
xpub, xprv = self._do_test_bip32("000102030405060708090a0b0c0d0e0f", "m/0'/1/2'/2/1000000000")
self.assertEqual("xpub6H1LXWLaKsWFhvm6RVpEL9P4KfRZSW7abD2ttkWP3SSQvnyA8FSVqNTEcYFgJS2UaFcxupHiYkro49S8yGasTvXEYBVPamhGW6cFJodrTHy", xpub)
self.assertEqual("xprvA41z7zogVVwxVSgdKUHDy1SKmdb533PjDz7J6N6mV6uS3ze1ai8FHa8kmHScGpWmj4WggLyQjgPie1rFSruoUihUZREPSL39UNdE3BBDu76", xprv)
Expand All @@ -488,6 +488,14 @@ def test_bip32(self):
self.assertEqual("xpub6FnCn6nSzZAw5Tw7cgR9bi15UV96gLZhjDstkXXxvCLsUXBGXPdSnLFbdpq8p9HmGsApME5hQTZ3emM2rnY5agb9rXpVGyy3bdW6EEgAtqt", xpub)
self.assertEqual("xprvA2nrNbFZABcdryreWet9Ea4LvTJcGsqrMzxHx98MMrotbir7yrKCEXw7nadnHM8Dq38EGfSh6dqA9QWTyefMLEcBYJUuekgW4BYPJcr9E7j", xprv)

xpub, xprv = self._do_test_bip32("4b381541583be4423346c643850da4b320e46a87ae3d2a4e6da11eba819cd4acba45d239319ac14f863b8d5ab5a0d0c64d2e8a1e7d1457df2e5a3c51c73235be", "m/0h")
self.assertEqual("xpub68NZiKmJWnxxS6aaHmn81bvJeTESw724CRDs6HbuccFQN9Ku14VQrADWgqbhhTHBaohPX4CjNLf9fq9MYo6oDaPPLPxSb7gwQN3ih19Zm4Y", xpub)
self.assertEqual("xprv9uPDJpEQgRQfDcW7BkF7eTya6RPxXeJCqCJGHuCJ4GiRVLzkTXBAJMu2qaMWPrS7AANYqdq6vcBcBUdJCVVFceUvJFjaPdGZ2y9WACViL4L", xprv)

xpub, xprv = self._do_test_bip32("3ddd5602285899a946114506157c7997e5444528f3003f6134712147db19b678", "m/0h/1h")
self.assertEqual("xpub6BJA1jSqiukeaesWfxe6sNK9CCGaujFFSJLomWHprUL9DePQ4JDkM5d88n49sMGJxrhpjazuXYWdMf17C9T5XnxkopaeS7jGk1GyyVziaMt", xpub)
self.assertEqual("xprv9xJocDuwtYCMNAo3Zw76WENQeAS6WGXQ55RCy7tDJ8oALr4FWkuVoHJeHVAcAqiZLE7Je3vZJHxspZdFHfnBEjHqU5hG1Jaj32dVoS6XLT1", xprv)

def test_xpub_from_xprv(self):
"""We can derive the xpub key from a xprv."""
for xprv_details in self.xprv_xpub:
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