diff --git a/tests/test_trezor.crypto.bip32.py b/tests/test_trezor.crypto.bip32.py
index b6c0b870..f7fc234f 100644
--- a/tests/test_trezor.crypto.bip32.py
+++ b/tests/test_trezor.crypto.bip32.py
@@ -3,6 +3,7 @@ from common import *
 from trezor.crypto import bip32
 
 SECP256K1_NAME = 'secp256k1'
+HARDENED = 0x80000000
 
 class TestCryptoBip32(unittest.TestCase):
 
@@ -50,7 +51,7 @@ class TestCryptoBip32(unittest.TestCase):
         self.assertEqual(ns2, ns)
 
         # [Chain m/0']
-        n.derive(0x80000000 | 0)
+        n.derive(HARDENED | 0)
         self.assertEqual(n.fingerprint(), 0x3442193e)
         self.assertEqual(n.chain_code(), unhexlify('47fdacbd0f1097043b78c63c20c34ef4ed9a111d980047ad16282c7ae6236141'))
         self.assertEqual(n.private_key(), unhexlify('edb2e14f9ee77d26dd93b4ecede8d16ed408ce149b6cd80b0715a2d911a0afea'))
@@ -84,7 +85,7 @@ class TestCryptoBip32(unittest.TestCase):
         self.assertEqual(ns2, ns)
 
         # [Chain m/0'/1/2']
-        n.derive(0x80000000 | 2)
+        n.derive(HARDENED | 2)
         self.assertEqual(n.fingerprint(), 0xbef5a2f9)
         self.assertEqual(n.chain_code(), unhexlify('04466b9cc8e161e966409ca52986c584f07e9dc81f735db683c3ff6ec7b1503f'))
         self.assertEqual(n.private_key(), unhexlify('cbce0d719ecf7431d88e6a89fa1483e02e35092af60c042b1df2ff59fa424dca'))
@@ -134,6 +135,114 @@ class TestCryptoBip32(unittest.TestCase):
         ns2 = n2.serialize_public()
         self.assertEqual(ns2, ns)
 
+    def test_secp256k1_vector_2_derive(self):
+        # pylint: disable=C0301
+        # test vector 2 from https://en.bitcoin.it/wiki/BIP_0032_TestVectors
+
+        # init m
+        n = bip32.from_seed(unhexlify('fffcf9f6f3f0edeae7e4e1dedbd8d5d2cfccc9c6c3c0bdbab7b4b1aeaba8a5a29f9c999693908d8a8784817e7b7875726f6c696663605d5a5754514e4b484542'), SECP256K1_NAME)
+
+        # [Chain m]
+        self.assertEqual(n.fingerprint(), 0x00000000)
+        self.assertEqual(n.chain_code(), unhexlify('60499f801b896d83179a4374aeb7822aaeaceaa0db1f85ee3e904c4defbd9689'))
+        self.assertEqual(n.private_key(), unhexlify('4b03d6fc340455b363f51020ad3ecca4f0850280cf436c70c727923f6db46c3e'))
+        self.assertEqual(n.public_key(), unhexlify('03cbcaa9c98c877a26977d00825c956a238e8dddfbd322cce4f74b0b5bd6ace4a7'))
+        ns = n.serialize_private()
+        self.assertEqual(ns, 'xprv9s21ZrQH143K31xYSDQpPDxsXRTUcvj2iNHm5NUtrGiGG5e2DtALGdso3pGz6ssrdK4PFmM8NSpSBHNqPqm55Qn3LqFtT2emdEXVYsCzC2U')
+        ns2 = bip32.deserialize(ns).serialize_private()
+        self.assertEqual(ns2, ns)
+        ns = n.serialize_public()
+        self.assertEqual(ns, 'xpub661MyMwAqRbcFW31YEwpkMuc5THy2PSt5bDMsktWQcFF8syAmRUapSCGu8ED9W6oDMSgv6Zz8idoc4a6mr8BDzTJY47LJhkJ8UB7WEGuduB')
+        n2 = bip32.deserialize(ns)
+        self.assertEqual(n2.private_key(), bytes(32))
+        ns2 = n2.serialize_public()
+        self.assertEqual(ns2, ns)
+
+        # [Chain m/0]
+        n.derive(0)
+        self.assertEqual(n.fingerprint(), 0xbd16bee5)
+        self.assertEqual(n.chain_code(), unhexlify('f0909affaa7ee7abe5dd4e100598d4dc53cd709d5a5c2cac40e7412f232f7c9c'))
+        self.assertEqual(n.private_key(), unhexlify('abe74a98f6c7eabee0428f53798f0ab8aa1bd37873999041703c742f15ac7e1e'))
+        self.assertEqual(n.public_key(), unhexlify('02fc9e5af0ac8d9b3cecfe2a888e2117ba3d089d8585886c9c826b6b22a98d12ea'))
+        ns = n.serialize_private()
+        self.assertEqual(ns, 'xprv9vHkqa6EV4sPZHYqZznhT2NPtPCjKuDKGY38FBWLvgaDx45zo9WQRUT3dKYnjwih2yJD9mkrocEZXo1ex8G81dwSM1fwqWpWkeS3v86pgKt')
+        ns2 = bip32.deserialize(ns).serialize_private()
+        self.assertEqual(ns2, ns)
+        ns = n.serialize_public()
+        self.assertEqual(ns, 'xpub69H7F5d8KSRgmmdJg2KhpAK8SR3DjMwAdkxj3ZuxV27CprR9LgpeyGmXUbC6wb7ERfvrnKZjXoUmmDznezpbZb7ap6r1D3tgFxHmwMkQTPH')
+        n2 = bip32.deserialize(ns)
+        self.assertEqual(n2.private_key(), bytes(32))
+        ns2 = n2.serialize_public()
+        self.assertEqual(ns2, ns)
+
+        # [Chain m/0/2147483647']
+        n.derive(HARDENED | 2147483647)
+        self.assertEqual(n.fingerprint(), 0x5a61ff8e)
+        self.assertEqual(n.chain_code(), unhexlify('be17a268474a6bb9c61e1d720cf6215e2a88c5406c4aee7b38547f585c9a37d9'))
+        self.assertEqual(n.private_key(), unhexlify('877c779ad9687164e9c2f4f0f4ff0340814392330693ce95a58fe18fd52e6e93'))
+        self.assertEqual(n.public_key(), unhexlify('03c01e7425647bdefa82b12d9bad5e3e6865bee0502694b94ca58b666abc0a5c3b'))
+        ns = n.serialize_private()
+        self.assertEqual(ns, 'xprv9wSp6B7kry3Vj9m1zSnLvN3xH8RdsPP1Mh7fAaR7aRLcQMKTR2vidYEeEg2mUCTAwCd6vnxVrcjfy2kRgVsFawNzmjuHc2YmYRmagcEPdU9')
+        ns2 = bip32.deserialize(ns).serialize_private()
+        self.assertEqual(ns2, ns)
+        ns = n.serialize_public()
+        self.assertEqual(ns, 'xpub6ASAVgeehLbnwdqV6UKMHVzgqAG8Gr6riv3Fxxpj8ksbH9ebxaEyBLZ85ySDhKiLDBrQSARLq1uNRts8RuJiHjaDMBU4Zn9h8LZNnBC5y4a')
+        n2 = bip32.deserialize(ns)
+        self.assertEqual(n2.private_key(), bytes(32))
+        ns2 = n2.serialize_public()
+        self.assertEqual(ns2, ns)
+
+        # [Chain m/0/2147483647'/1]
+        n.derive(1)
+        self.assertEqual(n.fingerprint(), 0xd8ab4937)
+        self.assertEqual(n.chain_code(), unhexlify('f366f48f1ea9f2d1d3fe958c95ca84ea18e4c4ddb9366c336c927eb246fb38cb'))
+        self.assertEqual(n.private_key(), unhexlify('704addf544a06e5ee4bea37098463c23613da32020d604506da8c0518e1da4b7'))
+        self.assertEqual(n.public_key(), unhexlify('03a7d1d856deb74c508e05031f9895dab54626251b3806e16b4bd12e781a7df5b9'))
+        ns = n.serialize_private()
+        self.assertEqual(ns, 'xprv9zFnWC6h2cLgpmSA46vutJzBcfJ8yaJGg8cX1e5StJh45BBciYTRXSd25UEPVuesF9yog62tGAQtHjXajPPdbRCHuWS6T8XA2ECKADdw4Ef')
+        ns2 = bip32.deserialize(ns).serialize_private()
+        self.assertEqual(ns2, ns)
+        ns = n.serialize_public()
+        self.assertEqual(ns, 'xpub6DF8uhdarytz3FWdA8TvFSvvAh8dP3283MY7p2V4SeE2wyWmG5mg5EwVvmdMVCQcoNJxGoWaU9DCWh89LojfZ537wTfunKau47EL2dhHKon')
+        n2 = bip32.deserialize(ns)
+        self.assertEqual(n2.private_key(), bytes(32))
+        ns2 = n2.serialize_public()
+        self.assertEqual(ns2, ns)
+
+        # [Chain m/0/2147483647'/1/2147483646']
+        n.derive(HARDENED | 2147483646)
+        self.assertEqual(n.fingerprint(), 0x78412e3a)
+        self.assertEqual(n.chain_code(), unhexlify('637807030d55d01f9a0cb3a7839515d796bd07706386a6eddf06cc29a65a0e29'))
+        self.assertEqual(n.private_key(), unhexlify('f1c7c871a54a804afe328b4c83a1c33b8e5ff48f5087273f04efa83b247d6a2d'))
+        self.assertEqual(n.public_key(), unhexlify('02d2b36900396c9282fa14628566582f206a5dd0bcc8d5e892611806cafb0301f0'))
+        ns = n.serialize_private()
+        self.assertEqual(ns, 'xprvA1RpRA33e1JQ7ifknakTFpgNXPmW2YvmhqLQYMmrj4xJXXWYpDPS3xz7iAxn8L39njGVyuoseXzU6rcxFLJ8HFsTjSyQbLYnMpCqE2VbFWc')
+        ns2 = bip32.deserialize(ns).serialize_private()
+        self.assertEqual(ns2, ns)
+        ns = n.serialize_public()
+        self.assertEqual(ns, 'xpub6ERApfZwUNrhLCkDtcHTcxd75RbzS1ed54G1LkBUHQVHQKqhMkhgbmJbZRkrgZw4koxb5JaHWkY4ALHY2grBGRjaDMzQLcgJvLJuZZvRcEL')
+        n2 = bip32.deserialize(ns)
+        self.assertEqual(n2.private_key(), bytes(32))
+        ns2 = n2.serialize_public()
+        self.assertEqual(ns2, ns)
+
+        # [Chain m/0/2147483647'/1/2147483646'/2]
+        n.derive(2)
+        self.assertEqual(n.fingerprint(), 0x31a507b8)
+        self.assertEqual(n.chain_code(), unhexlify('9452b549be8cea3ecb7a84bec10dcfd94afe4d129ebfd3b3cb58eedf394ed271'))
+        self.assertEqual(n.private_key(), unhexlify('bb7d39bdb83ecf58f2fd82b6d918341cbef428661ef01ab97c28a4842125ac23'))
+        self.assertEqual(n.public_key(), unhexlify('024d902e1a2fc7a8755ab5b694c575fce742c48d9ff192e63df5193e4c7afe1f9c'))
+        ns = n.serialize_private()
+        self.assertEqual(ns, 'xprvA2nrNbFZABcdryreWet9Ea4LvTJcGsqrMzxHx98MMrotbir7yrKCEXw7nadnHM8Dq38EGfSh6dqA9QWTyefMLEcBYJUuekgW4BYPJcr9E7j')
+        ns2 = bip32.deserialize(ns).serialize_private()
+        self.assertEqual(ns2, ns)
+        ns = n.serialize_public()
+        self.assertEqual(ns, 'xpub6FnCn6nSzZAw5Tw7cgR9bi15UV96gLZhjDstkXXxvCLsUXBGXPdSnLFbdpq8p9HmGsApME5hQTZ3emM2rnY5agb9rXpVGyy3bdW6EEgAtqt')
+        n2 = bip32.deserialize(ns)
+        self.assertEqual(n2.private_key(), bytes(32))
+        ns2 = n2.serialize_public()
+        self.assertEqual(ns2, ns)
+
     def test_secp256k1_vector_1_derive_path(self):
         # pylint: disable=C0301
         # test vector 1 from https://en.bitcoin.it/wiki/BIP_0032_TestVectors
@@ -160,7 +269,7 @@ class TestCryptoBip32(unittest.TestCase):
 
         # [Chain m/0']
         n = m.clone()
-        n.derive_path([0x80000000 | 0])
+        n.derive_path([HARDENED | 0])
         self.assertEqual(n.fingerprint(), 0x3442193e)
         self.assertEqual(n.chain_code(), unhexlify('47fdacbd0f1097043b78c63c20c34ef4ed9a111d980047ad16282c7ae6236141'))
         self.assertEqual(n.private_key(), unhexlify('edb2e14f9ee77d26dd93b4ecede8d16ed408ce149b6cd80b0715a2d911a0afea'))
@@ -178,7 +287,7 @@ class TestCryptoBip32(unittest.TestCase):
 
         # [Chain m/0'/1]
         n = m.clone()
-        n.derive_path([0x80000000 | 0, 1])
+        n.derive_path([HARDENED | 0, 1])
         self.assertEqual(n.fingerprint(), 0x5c1bd648)
         self.assertEqual(n.chain_code(), unhexlify('2a7857631386ba23dacac34180dd1983734e444fdbf774041578e9b6adb37c19'))
         self.assertEqual(n.private_key(), unhexlify('3c6cb8d0f6a264c91ea8b5030fadaa8e538b020f0a387421a12de9319dc93368'))
@@ -196,7 +305,7 @@ class TestCryptoBip32(unittest.TestCase):
 
         # [Chain m/0'/1/2']
         n = m.clone()
-        n.derive_path([0x80000000 | 0, 1, 0x80000000 | 2])
+        n.derive_path([HARDENED | 0, 1, HARDENED | 2])
         self.assertEqual(n.fingerprint(), 0xbef5a2f9)
         self.assertEqual(n.chain_code(), unhexlify('04466b9cc8e161e966409ca52986c584f07e9dc81f735db683c3ff6ec7b1503f'))
         self.assertEqual(n.private_key(), unhexlify('cbce0d719ecf7431d88e6a89fa1483e02e35092af60c042b1df2ff59fa424dca'))
@@ -214,7 +323,7 @@ class TestCryptoBip32(unittest.TestCase):
 
         # [Chain m/0'/1/2'/2]
         n = m.clone()
-        n.derive_path([0x80000000 | 0, 1, 0x80000000 | 2, 2])
+        n.derive_path([HARDENED | 0, 1, HARDENED | 2, 2])
         self.assertEqual(n.fingerprint(), 0xee7ab90c)
         self.assertEqual(n.chain_code(), unhexlify('cfb71883f01676f587d023cc53a35bc7f88f724b1f8c2892ac1275ac822a3edd'))
         self.assertEqual(n.private_key(), unhexlify('0f479245fb19a38a1954c5c7c0ebab2f9bdfd96a17563ef28a6a4b1a2a764ef4'))
@@ -232,7 +341,7 @@ class TestCryptoBip32(unittest.TestCase):
 
         # [Chain m/0'/1/2'/2/1000000000]
         n = m.clone()
-        n.derive_path([0x80000000 | 0, 1, 0x80000000 | 2, 2, 1000000000])
+        n.derive_path([HARDENED | 0, 1, HARDENED | 2, 2, 1000000000])
         self.assertEqual(n.fingerprint(), 0xd880d7d8)
         self.assertEqual(n.chain_code(), unhexlify('c783e67b921d2beb8f6b389cc646d7263b4145701dadd2161548a8b078e65e9e'))
         self.assertEqual(n.private_key(), unhexlify('471b76e389e528d6de6d816857e012c5455051cad6660850e58372a6c3e6e7c8'))
@@ -248,5 +357,119 @@ class TestCryptoBip32(unittest.TestCase):
         ns2 = n2.serialize_public()
         self.assertEqual(ns2, ns)
 
+    def test_secp256k1_vector_2_derive_path(self):
+        # pylint: disable=C0301
+        # test vector 2 from https://en.bitcoin.it/wiki/BIP_0032_TestVectors
+
+        # init m
+        m = bip32.from_seed(unhexlify('fffcf9f6f3f0edeae7e4e1dedbd8d5d2cfccc9c6c3c0bdbab7b4b1aeaba8a5a29f9c999693908d8a8784817e7b7875726f6c696663605d5a5754514e4b484542'), SECP256K1_NAME)
+
+        # [Chain m]
+        n = m.clone()
+        self.assertEqual(n.fingerprint(), 0x00000000)
+        self.assertEqual(n.chain_code(), unhexlify('60499f801b896d83179a4374aeb7822aaeaceaa0db1f85ee3e904c4defbd9689'))
+        self.assertEqual(n.private_key(), unhexlify('4b03d6fc340455b363f51020ad3ecca4f0850280cf436c70c727923f6db46c3e'))
+        self.assertEqual(n.public_key(), unhexlify('03cbcaa9c98c877a26977d00825c956a238e8dddfbd322cce4f74b0b5bd6ace4a7'))
+        ns = n.serialize_private()
+        self.assertEqual(ns, 'xprv9s21ZrQH143K31xYSDQpPDxsXRTUcvj2iNHm5NUtrGiGG5e2DtALGdso3pGz6ssrdK4PFmM8NSpSBHNqPqm55Qn3LqFtT2emdEXVYsCzC2U')
+        ns2 = bip32.deserialize(ns).serialize_private()
+        self.assertEqual(ns2, ns)
+        ns = n.serialize_public()
+        self.assertEqual(ns, 'xpub661MyMwAqRbcFW31YEwpkMuc5THy2PSt5bDMsktWQcFF8syAmRUapSCGu8ED9W6oDMSgv6Zz8idoc4a6mr8BDzTJY47LJhkJ8UB7WEGuduB')
+        n2 = bip32.deserialize(ns)
+        self.assertEqual(n2.private_key(), bytes(32))
+        ns2 = n2.serialize_public()
+        self.assertEqual(ns2, ns)
+
+        # [Chain m/0]
+        n = m.clone()
+        n.derive_path([0])
+        self.assertEqual(n.fingerprint(), 0xbd16bee5)
+        self.assertEqual(n.chain_code(), unhexlify('f0909affaa7ee7abe5dd4e100598d4dc53cd709d5a5c2cac40e7412f232f7c9c'))
+        self.assertEqual(n.private_key(), unhexlify('abe74a98f6c7eabee0428f53798f0ab8aa1bd37873999041703c742f15ac7e1e'))
+        self.assertEqual(n.public_key(), unhexlify('02fc9e5af0ac8d9b3cecfe2a888e2117ba3d089d8585886c9c826b6b22a98d12ea'))
+        ns = n.serialize_private()
+        self.assertEqual(ns, 'xprv9vHkqa6EV4sPZHYqZznhT2NPtPCjKuDKGY38FBWLvgaDx45zo9WQRUT3dKYnjwih2yJD9mkrocEZXo1ex8G81dwSM1fwqWpWkeS3v86pgKt')
+        ns2 = bip32.deserialize(ns).serialize_private()
+        self.assertEqual(ns2, ns)
+        ns = n.serialize_public()
+        self.assertEqual(ns, 'xpub69H7F5d8KSRgmmdJg2KhpAK8SR3DjMwAdkxj3ZuxV27CprR9LgpeyGmXUbC6wb7ERfvrnKZjXoUmmDznezpbZb7ap6r1D3tgFxHmwMkQTPH')
+        n2 = bip32.deserialize(ns)
+        self.assertEqual(n2.private_key(), bytes(32))
+        ns2 = n2.serialize_public()
+        self.assertEqual(ns2, ns)
+
+        # [Chain m/0/2147483647']
+        n = m.clone()
+        n.derive_path([0, HARDENED | 2147483647])
+        self.assertEqual(n.fingerprint(), 0x5a61ff8e)
+        self.assertEqual(n.chain_code(), unhexlify('be17a268474a6bb9c61e1d720cf6215e2a88c5406c4aee7b38547f585c9a37d9'))
+        self.assertEqual(n.private_key(), unhexlify('877c779ad9687164e9c2f4f0f4ff0340814392330693ce95a58fe18fd52e6e93'))
+        self.assertEqual(n.public_key(), unhexlify('03c01e7425647bdefa82b12d9bad5e3e6865bee0502694b94ca58b666abc0a5c3b'))
+        ns = n.serialize_private()
+        self.assertEqual(ns, 'xprv9wSp6B7kry3Vj9m1zSnLvN3xH8RdsPP1Mh7fAaR7aRLcQMKTR2vidYEeEg2mUCTAwCd6vnxVrcjfy2kRgVsFawNzmjuHc2YmYRmagcEPdU9')
+        ns2 = bip32.deserialize(ns).serialize_private()
+        self.assertEqual(ns2, ns)
+        ns = n.serialize_public()
+        self.assertEqual(ns, 'xpub6ASAVgeehLbnwdqV6UKMHVzgqAG8Gr6riv3Fxxpj8ksbH9ebxaEyBLZ85ySDhKiLDBrQSARLq1uNRts8RuJiHjaDMBU4Zn9h8LZNnBC5y4a')
+        n2 = bip32.deserialize(ns)
+        self.assertEqual(n2.private_key(), bytes(32))
+        ns2 = n2.serialize_public()
+        self.assertEqual(ns2, ns)
+
+        # [Chain m/0/2147483647'/1]
+        n = m.clone()
+        n.derive_path([0, HARDENED | 2147483647, 1])
+        self.assertEqual(n.fingerprint(), 0xd8ab4937)
+        self.assertEqual(n.chain_code(), unhexlify('f366f48f1ea9f2d1d3fe958c95ca84ea18e4c4ddb9366c336c927eb246fb38cb'))
+        self.assertEqual(n.private_key(), unhexlify('704addf544a06e5ee4bea37098463c23613da32020d604506da8c0518e1da4b7'))
+        self.assertEqual(n.public_key(), unhexlify('03a7d1d856deb74c508e05031f9895dab54626251b3806e16b4bd12e781a7df5b9'))
+        ns = n.serialize_private()
+        self.assertEqual(ns, 'xprv9zFnWC6h2cLgpmSA46vutJzBcfJ8yaJGg8cX1e5StJh45BBciYTRXSd25UEPVuesF9yog62tGAQtHjXajPPdbRCHuWS6T8XA2ECKADdw4Ef')
+        ns2 = bip32.deserialize(ns).serialize_private()
+        self.assertEqual(ns2, ns)
+        ns = n.serialize_public()
+        self.assertEqual(ns, 'xpub6DF8uhdarytz3FWdA8TvFSvvAh8dP3283MY7p2V4SeE2wyWmG5mg5EwVvmdMVCQcoNJxGoWaU9DCWh89LojfZ537wTfunKau47EL2dhHKon')
+        n2 = bip32.deserialize(ns)
+        self.assertEqual(n2.private_key(), bytes(32))
+        ns2 = n2.serialize_public()
+        self.assertEqual(ns2, ns)
+
+        # [Chain m/0/2147483647'/1/2147483646']
+        n = m.clone()
+        n.derive_path([0, HARDENED | 2147483647, 1, HARDENED | 2147483646])
+        self.assertEqual(n.fingerprint(), 0x78412e3a)
+        self.assertEqual(n.chain_code(), unhexlify('637807030d55d01f9a0cb3a7839515d796bd07706386a6eddf06cc29a65a0e29'))
+        self.assertEqual(n.private_key(), unhexlify('f1c7c871a54a804afe328b4c83a1c33b8e5ff48f5087273f04efa83b247d6a2d'))
+        self.assertEqual(n.public_key(), unhexlify('02d2b36900396c9282fa14628566582f206a5dd0bcc8d5e892611806cafb0301f0'))
+        ns = n.serialize_private()
+        self.assertEqual(ns, 'xprvA1RpRA33e1JQ7ifknakTFpgNXPmW2YvmhqLQYMmrj4xJXXWYpDPS3xz7iAxn8L39njGVyuoseXzU6rcxFLJ8HFsTjSyQbLYnMpCqE2VbFWc')
+        ns2 = bip32.deserialize(ns).serialize_private()
+        self.assertEqual(ns2, ns)
+        ns = n.serialize_public()
+        self.assertEqual(ns, 'xpub6ERApfZwUNrhLCkDtcHTcxd75RbzS1ed54G1LkBUHQVHQKqhMkhgbmJbZRkrgZw4koxb5JaHWkY4ALHY2grBGRjaDMzQLcgJvLJuZZvRcEL')
+        n2 = bip32.deserialize(ns)
+        self.assertEqual(n2.private_key(), bytes(32))
+        ns2 = n2.serialize_public()
+        self.assertEqual(ns2, ns)
+
+        # [Chain m/0/2147483647'/1/2147483646'/2]
+        n = m.clone()
+        n.derive_path([0, HARDENED | 2147483647, 1, HARDENED | 2147483646, 2])
+        self.assertEqual(n.fingerprint(), 0x31a507b8)
+        self.assertEqual(n.chain_code(), unhexlify('9452b549be8cea3ecb7a84bec10dcfd94afe4d129ebfd3b3cb58eedf394ed271'))
+        self.assertEqual(n.private_key(), unhexlify('bb7d39bdb83ecf58f2fd82b6d918341cbef428661ef01ab97c28a4842125ac23'))
+        self.assertEqual(n.public_key(), unhexlify('024d902e1a2fc7a8755ab5b694c575fce742c48d9ff192e63df5193e4c7afe1f9c'))
+        ns = n.serialize_private()
+        self.assertEqual(ns, 'xprvA2nrNbFZABcdryreWet9Ea4LvTJcGsqrMzxHx98MMrotbir7yrKCEXw7nadnHM8Dq38EGfSh6dqA9QWTyefMLEcBYJUuekgW4BYPJcr9E7j')
+        ns2 = bip32.deserialize(ns).serialize_private()
+        self.assertEqual(ns2, ns)
+        ns = n.serialize_public()
+        self.assertEqual(ns, 'xpub6FnCn6nSzZAw5Tw7cgR9bi15UV96gLZhjDstkXXxvCLsUXBGXPdSnLFbdpq8p9HmGsApME5hQTZ3emM2rnY5agb9rXpVGyy3bdW6EEgAtqt')
+        n2 = bip32.deserialize(ns)
+        self.assertEqual(n2.private_key(), bytes(32))
+        ns2 = n2.serialize_public()
+        self.assertEqual(ns2, ns)
+
 if __name__ == '__main__':
     unittest.main()