def test_invalid_derivation(self):
xpriv = CBitcoinExtKey(
'xprv9s21ZrQH143K3QTDL4LXw2F7HEK3wJUD2nW2nRk4stbPy6cq3jPPqjiChkVvvNKmPGJxWUtg6LnF5kejMRNNU3TGtRBeJgk33yuGBxrMPHi'
)
with self.assertRaises(ValueError):
xpriv.derive(1 << 32)
final_xpriv_str = 'xprvJ9DiCzes6yvKjEy8duXR1Qg6Et6CBmrR4yFJvnburXG4X6VnKbNxoTYhvVdpsxkjdXwX3D2NJHFCAnnN1DdAJCVQitnFbFWv3fL3oB2BFo4'
for _ in range(255):
xpriv = xpriv.derive(0)
self.assertEqual(str(CBitcoinExtKey.from_bytes(xpriv)), final_xpriv_str)
with self.assertRaises(ValueError):
xpriv.derive(0) # depth > 255
def test_extkey(self):
xprv_str = 'xprv9s21ZrQH143K3QTDL4LXw2F7HEK3wJUD2nW2nRk4stbPy6cq3jPPqjiChkVvvNKmPGJxWUtg6LnF5kejMRNNU3TGtRBeJgk33yuGBxrMPHi'
xprv = CBitcoinExtKey(xprv_str)
xprv2 = CExtKey(xprv)
self.assertEqual(xprv_str, str(CBitcoinExtKey.from_bytes(xprv2)))
self.assertEqual(bytes(xprv.derive(BIP32_HARDENED_KEY_LIMIT)),
bytes(xprv2.derive(BIP32_HARDENED_KEY_LIMIT)))
self.assertEqual(str(xprv.neuter()), str(CBitcoinExtPubKey.from_bytes(xprv2.neuter())))