trezor.crypto.der: convert -> encode

small cleanup to new unit test
2024-11-22 07:28:10 +00:00 · 2016-11-08 20:25:55 +01:00 · 2016-11-08 20:25:55 +01:00 · 32e699efdb
commit 32e699efdb
parent b3bc71c481
5 changed files with 85 additions and 85 deletions
--- a/src/apps/common/signtx.py
+++ b/src/apps/common/signtx.py
@ -320,8 +320,7 @@ def ecdsa_hash_pubkey(pubkey: bytes) -> bytes:

 def ecdsa_sign(node, digest: bytes) -> bytes:
    sig = secp256k1.sign(node.private_key(), digest)
-    print(len(sig))
-    sigder = der.convert_seq((sig[:32], sig[32:]))
+    sigder = der.encode_seq((sig[:32], sig[32:]))
    return sigder


--- a/src/trezor/crypto/der.py
+++ b/src/trezor/crypto/der.py
@ -1,4 +1,4 @@
-def convert_length(l: int):
+def encode_length(l: int):
    if l < 0x80:
       return bytes([l])
    elif l <= 0xFF:
@ -8,14 +8,14 @@ def convert_length(l: int):
    else:
       raise ValueError

-def convert_int(i: bytes):
+def encode_int(i: bytes):
    i = i.lstrip(b'\x00')
    if i[0] >= 0x80:
        i = b'\x00' + i
-    return b'\x02' + convert_length(len(i)) + i
+    return b'\x02' + encode_length(len(i)) + i

-def convert_seq(seq: tuple):
+def encode_seq(seq: tuple):
    res = b''
    for i in seq:
-        res += convert_int(i)
-    return b'\x30' + convert_length(len(res)) + res
+        res += encode_int(i)
+    return b'\x30' + encode_length(len(res)) + res
--- a/tests/test_apps_common.signtx.py
+++ b/tests/test_apps_common.signtx.py
@ -24,18 +24,18 @@ class TestSignTx(unittest.TestCase):
        # input 0: 0.0039 BTC

        ptx1 = TransactionType(version=1, lock_time=0, inputs_cnt=2, outputs_cnt=1)
-        pinp1 = TxInputType(script_sig=unhexlify(b'483045022072ba61305fe7cb542d142b8f3299a7b10f9ea61f6ffaab5dca8142601869d53c0221009a8027ed79eb3b9bc13577ac2853269323434558528c6b6a7e542be46e7e9a820141047a2d177c0f3626fc68c53610b0270fa6156181f46586c679ba6a88b34c6f4874686390b4d92e5769fbb89c8050b984f4ec0b257a0e5c4ff8bd3b035a51709503'),
-                            prev_hash=unhexlify(b'c16a03f1cf8f99f6b5297ab614586cacec784c2d259af245909dedb0e39eddcf'),
+        pinp1 = TxInputType(script_sig=unhexlify('483045022072ba61305fe7cb542d142b8f3299a7b10f9ea61f6ffaab5dca8142601869d53c0221009a8027ed79eb3b9bc13577ac2853269323434558528c6b6a7e542be46e7e9a820141047a2d177c0f3626fc68c53610b0270fa6156181f46586c679ba6a88b34c6f4874686390b4d92e5769fbb89c8050b984f4ec0b257a0e5c4ff8bd3b035a51709503'),
+                            prev_hash=unhexlify('c16a03f1cf8f99f6b5297ab614586cacec784c2d259af245909dedb0e39eddcf'),
                            prev_index=1)
-        pinp2 = TxInputType(script_sig=unhexlify(b'48304502200fd63adc8f6cb34359dc6cca9e5458d7ea50376cbd0a74514880735e6d1b8a4c0221008b6ead7fe5fbdab7319d6dfede3a0bc8e2a7c5b5a9301636d1de4aa31a3ee9b101410486ad608470d796236b003635718dfc07c0cac0cfc3bfc3079e4f491b0426f0676e6643a39198e8e7bdaffb94f4b49ea21baa107ec2e237368872836073668214'),
-                            prev_hash=unhexlify(b'1ae39a2f8d59670c8fc61179148a8e61e039d0d9e8ab08610cb69b4a19453eaf'),
+        pinp2 = TxInputType(script_sig=unhexlify('48304502200fd63adc8f6cb34359dc6cca9e5458d7ea50376cbd0a74514880735e6d1b8a4c0221008b6ead7fe5fbdab7319d6dfede3a0bc8e2a7c5b5a9301636d1de4aa31a3ee9b101410486ad608470d796236b003635718dfc07c0cac0cfc3bfc3079e4f491b0426f0676e6643a39198e8e7bdaffb94f4b49ea21baa107ec2e237368872836073668214'),
+                            prev_hash=unhexlify('1ae39a2f8d59670c8fc61179148a8e61e039d0d9e8ab08610cb69b4a19453eaf'),
                            prev_index=1)
-        pout1 = TxOutputBinType(script_pubkey=unhexlify(b'76a91424a56db43cf6f2b02e838ea493f95d8d6047423188ac'),
+        pout1 = TxOutputBinType(script_pubkey=unhexlify('76a91424a56db43cf6f2b02e838ea493f95d8d6047423188ac'),
                                amount=390000)

        inp1 = TxInputType(address_n=[0],  # 14LmW5k4ssUrtbAB4255zdqv3b4w1TuX9e
                           # amount=390000,
-                           prev_hash=unhexlify(b'd5f65ee80147b4bcc70b75e4bbf2d7382021b871bd8867ef8fa525ef50864882'),
+                           prev_hash=unhexlify('d5f65ee80147b4bcc70b75e4bbf2d7382021b871bd8867ef8fa525ef50864882'),
                           prev_index=0)
        out1 = TxOutputType(address='1MJ2tj2ThBE62zXbBYA5ZaN3fdve5CPAz1',
                            amount=390000 - 10000,
@ -46,13 +46,13 @@ class TestSignTx(unittest.TestCase):
            None,
            TxRequest(request_type=TXINPUT, details=TxRequestDetailsType(request_index=0, tx_hash=None)),
            TxAck(tx=TransactionType(inputs=[inp1])),
-            TxRequest(request_type=TXMETA, details=TxRequestDetailsType(request_index=None, tx_hash=unhexlify(b"d5f65ee80147b4bcc70b75e4bbf2d7382021b871bd8867ef8fa525ef50864882")), serialized=None),
+            TxRequest(request_type=TXMETA, details=TxRequestDetailsType(request_index=None, tx_hash=unhexlify('d5f65ee80147b4bcc70b75e4bbf2d7382021b871bd8867ef8fa525ef50864882')), serialized=None),
            TxAck(tx=ptx1),
-            TxRequest(request_type=TXINPUT, details=TxRequestDetailsType(request_index=0, tx_hash=unhexlify(b"d5f65ee80147b4bcc70b75e4bbf2d7382021b871bd8867ef8fa525ef50864882")), serialized=None),
+            TxRequest(request_type=TXINPUT, details=TxRequestDetailsType(request_index=0, tx_hash=unhexlify('d5f65ee80147b4bcc70b75e4bbf2d7382021b871bd8867ef8fa525ef50864882')), serialized=None),
            TxAck(tx=TransactionType(inputs=[pinp1])),
-            TxRequest(request_type=TXINPUT, details=TxRequestDetailsType(request_index=1, tx_hash=unhexlify(b"d5f65ee80147b4bcc70b75e4bbf2d7382021b871bd8867ef8fa525ef50864882")), serialized=None),
+            TxRequest(request_type=TXINPUT, details=TxRequestDetailsType(request_index=1, tx_hash=unhexlify('d5f65ee80147b4bcc70b75e4bbf2d7382021b871bd8867ef8fa525ef50864882')), serialized=None),
            TxAck(tx=TransactionType(inputs=[pinp2])),
-            TxRequest(request_type=TXOUTPUT, details=TxRequestDetailsType(request_index=0, tx_hash=unhexlify(b"d5f65ee80147b4bcc70b75e4bbf2d7382021b871bd8867ef8fa525ef50864882")), serialized=None),
+            TxRequest(request_type=TXOUTPUT, details=TxRequestDetailsType(request_index=0, tx_hash=unhexlify('d5f65ee80147b4bcc70b75e4bbf2d7382021b871bd8867ef8fa525ef50864882')), serialized=None),
            TxAck(tx=TransactionType(bin_outputs=[pout1])),
            TxRequest(request_type=TXOUTPUT, details=TxRequestDetailsType(request_index=0, tx_hash=None), serialized=None),
            TxAck(tx=TransactionType(outputs=[out1])),
@ -64,13 +64,13 @@ class TestSignTx(unittest.TestCase):
            TxAck(tx=TransactionType(outputs=[out1])),
            TxRequest(request_type=TXOUTPUT, details=TxRequestDetailsType(request_index=0, tx_hash=None), serialized=TxRequestSerializedType(
                signature_index=0,
-                signature=unhexlify(b'30450221009a0b7be0d4ed3146ee262b42202841834698bb3ee39c24e7437df208b8b7077102202b79ab1e7736219387dffe8d615bbdba87e11477104b867ef47afed1a5ede781'),
-                serialized_tx=unhexlify(b'010000000182488650ef25a58fef6788bd71b8212038d7f2bbe4750bc7bcb44701e85ef6d5000000006b4830450221009a0b7be0d4ed3146ee262b42202841834698bb3ee39c24e7437df208b8b7077102202b79ab1e7736219387dffe8d615bbdba87e11477104b867ef47afed1a5ede7810121023230848585885f63803a0a8aecdd6538792d5c539215c91698e315bf0253b43dffffffff'))),
+                signature=unhexlify('30450221009a0b7be0d4ed3146ee262b42202841834698bb3ee39c24e7437df208b8b7077102202b79ab1e7736219387dffe8d615bbdba87e11477104b867ef47afed1a5ede781'),
+                serialized_tx=unhexlify('010000000182488650ef25a58fef6788bd71b8212038d7f2bbe4750bc7bcb44701e85ef6d5000000006b4830450221009a0b7be0d4ed3146ee262b42202841834698bb3ee39c24e7437df208b8b7077102202b79ab1e7736219387dffe8d615bbdba87e11477104b867ef47afed1a5ede7810121023230848585885f63803a0a8aecdd6538792d5c539215c91698e315bf0253b43dffffffff'))),
            TxAck(tx=TransactionType(outputs=[out1])),
            TxRequest(request_type=TXFINISHED, details=None, serialized=TxRequestSerializedType(
                signature_index=None,
                signature=None,
-                serialized_tx=unhexlify(b'0160cc0500000000001976a914de9b2a8da088824e8fe51debea566617d851537888ac00000000'),
+                serialized_tx=unhexlify('0160cc0500000000001976a914de9b2a8da088824e8fe51debea566617d851537888ac00000000'),
            )),
        ]

--- a/tests/test_trezor.crypto.bip32.py
+++ b/tests/test_trezor.crypto.bip32.py
@ -16,7 +16,7 @@ class TestCryptoBip32(unittest.TestCase):
                bip32.from_seed(bytearray(), c)
            with self.assertRaises(TypeError):
                bip32.from_seed(1, c)
-        s = unhexlify("000102030405060708090a0b0c0d0e0f")
+        s = unhexlify('000102030405060708090a0b0c0d0e0f')
        with self.assertRaises(ValueError):
            bip32.from_seed(s, '')
        with self.assertRaises(ValueError):
@ -31,19 +31,19 @@ class TestCryptoBip32(unittest.TestCase):
        # test vector 1 from https://en.bitcoin.it/wiki/BIP_0032_TestVectors

        # init m
-        n = bip32.from_seed(unhexlify("000102030405060708090a0b0c0d0e0f"), SECP256K1_NAME)
+        n = bip32.from_seed(unhexlify('000102030405060708090a0b0c0d0e0f'), SECP256K1_NAME)

        # [Chain m]
        self.assertEqual(n.fingerprint(), 0x00000000)
-        self.assertEqual(n.chain_code(), unhexlify("873dff81c02f525623fd1fe5167eac3a55a049de3d314bb42ee227ffed37d508"))
-        self.assertEqual(n.private_key(), unhexlify("e8f32e723decf4051aefac8e2c93c9c5b214313817cdb01a1494b917c8436b35"))
-        self.assertEqual(n.public_key(), unhexlify("0339a36013301597daef41fbe593a02cc513d0b55527ec2df1050e2e8ff49c85c2"))
+        self.assertEqual(n.chain_code(), unhexlify('873dff81c02f525623fd1fe5167eac3a55a049de3d314bb42ee227ffed37d508'))
+        self.assertEqual(n.private_key(), unhexlify('e8f32e723decf4051aefac8e2c93c9c5b214313817cdb01a1494b917c8436b35'))
+        self.assertEqual(n.public_key(), unhexlify('0339a36013301597daef41fbe593a02cc513d0b55527ec2df1050e2e8ff49c85c2'))
        ns = n.serialize_private()
-        self.assertEqual(ns, "xprv9s21ZrQH143K3QTDL4LXw2F7HEK3wJUD2nW2nRk4stbPy6cq3jPPqjiChkVvvNKmPGJxWUtg6LnF5kejMRNNU3TGtRBeJgk33yuGBxrMPHi")
+        self.assertEqual(ns, 'xprv9s21ZrQH143K3QTDL4LXw2F7HEK3wJUD2nW2nRk4stbPy6cq3jPPqjiChkVvvNKmPGJxWUtg6LnF5kejMRNNU3TGtRBeJgk33yuGBxrMPHi')
        ns2 = bip32.deserialize(ns).serialize_private()
        self.assertEqual(ns2, ns)
        ns = n.serialize_public()
-        self.assertEqual(ns, "xpub661MyMwAqRbcFtXgS5sYJABqqG9YLmC4Q1Rdap9gSE8NqtwybGhePY2gZ29ESFjqJoCu1Rupje8YtGqsefD265TMg7usUDFdp6W1EGMcet8")
+        self.assertEqual(ns, 'xpub661MyMwAqRbcFtXgS5sYJABqqG9YLmC4Q1Rdap9gSE8NqtwybGhePY2gZ29ESFjqJoCu1Rupje8YtGqsefD265TMg7usUDFdp6W1EGMcet8')
        n2 = bip32.deserialize(ns)
        self.assertEqual(n2.private_key(), bytes(32))
        ns2 = n2.serialize_public()
@ -52,15 +52,15 @@ class TestCryptoBip32(unittest.TestCase):
        # [Chain m/0']
        n.derive(0x80000000 | 0)
        self.assertEqual(n.fingerprint(), 0x3442193e)
-        self.assertEqual(n.chain_code(), unhexlify("47fdacbd0f1097043b78c63c20c34ef4ed9a111d980047ad16282c7ae6236141"))
-        self.assertEqual(n.private_key(), unhexlify("edb2e14f9ee77d26dd93b4ecede8d16ed408ce149b6cd80b0715a2d911a0afea"))
-        self.assertEqual(n.public_key(), unhexlify("035a784662a4a20a65bf6aab9ae98a6c068a81c52e4b032c0fb5400c706cfccc56"))
+        self.assertEqual(n.chain_code(), unhexlify('47fdacbd0f1097043b78c63c20c34ef4ed9a111d980047ad16282c7ae6236141'))
+        self.assertEqual(n.private_key(), unhexlify('edb2e14f9ee77d26dd93b4ecede8d16ed408ce149b6cd80b0715a2d911a0afea'))
+        self.assertEqual(n.public_key(), unhexlify('035a784662a4a20a65bf6aab9ae98a6c068a81c52e4b032c0fb5400c706cfccc56'))
        ns = n.serialize_private()
-        self.assertEqual(ns, "xprv9uHRZZhk6KAJC1avXpDAp4MDc3sQKNxDiPvvkX8Br5ngLNv1TxvUxt4cV1rGL5hj6KCesnDYUhd7oWgT11eZG7XnxHrnYeSvkzY7d2bhkJ7")
+        self.assertEqual(ns, 'xprv9uHRZZhk6KAJC1avXpDAp4MDc3sQKNxDiPvvkX8Br5ngLNv1TxvUxt4cV1rGL5hj6KCesnDYUhd7oWgT11eZG7XnxHrnYeSvkzY7d2bhkJ7')
        ns2 = bip32.deserialize(ns).serialize_private()
        self.assertEqual(ns2, ns)
        ns = n.serialize_public()
-        self.assertEqual(ns, "xpub68Gmy5EdvgibQVfPdqkBBCHxA5htiqg55crXYuXoQRKfDBFA1WEjWgP6LHhwBZeNK1VTsfTFUHCdrfp1bgwQ9xv5ski8PX9rL2dZXvgGDnw")
+        self.assertEqual(ns, 'xpub68Gmy5EdvgibQVfPdqkBBCHxA5htiqg55crXYuXoQRKfDBFA1WEjWgP6LHhwBZeNK1VTsfTFUHCdrfp1bgwQ9xv5ski8PX9rL2dZXvgGDnw')
        n2 = bip32.deserialize(ns)
        self.assertEqual(n2.private_key(), bytes(32))
        ns2 = n2.serialize_public()
@ -69,15 +69,15 @@ class TestCryptoBip32(unittest.TestCase):
        # [Chain m/0'/1]
        n.derive(1)
        self.assertEqual(n.fingerprint(), 0x5c1bd648)
-        self.assertEqual(n.chain_code(), unhexlify("2a7857631386ba23dacac34180dd1983734e444fdbf774041578e9b6adb37c19"))
-        self.assertEqual(n.private_key(), unhexlify("3c6cb8d0f6a264c91ea8b5030fadaa8e538b020f0a387421a12de9319dc93368"))
-        self.assertEqual(n.public_key(), unhexlify("03501e454bf00751f24b1b489aa925215d66af2234e3891c3b21a52bedb3cd711c"))
+        self.assertEqual(n.chain_code(), unhexlify('2a7857631386ba23dacac34180dd1983734e444fdbf774041578e9b6adb37c19'))
+        self.assertEqual(n.private_key(), unhexlify('3c6cb8d0f6a264c91ea8b5030fadaa8e538b020f0a387421a12de9319dc93368'))
+        self.assertEqual(n.public_key(), unhexlify('03501e454bf00751f24b1b489aa925215d66af2234e3891c3b21a52bedb3cd711c'))
        ns = n.serialize_private()
-        self.assertEqual(ns, "xprv9wTYmMFdV23N2TdNG573QoEsfRrWKQgWeibmLntzniatZvR9BmLnvSxqu53Kw1UmYPxLgboyZQaXwTCg8MSY3H2EU4pWcQDnRnrVA1xe8fs")
+        self.assertEqual(ns, 'xprv9wTYmMFdV23N2TdNG573QoEsfRrWKQgWeibmLntzniatZvR9BmLnvSxqu53Kw1UmYPxLgboyZQaXwTCg8MSY3H2EU4pWcQDnRnrVA1xe8fs')
        ns2 = bip32.deserialize(ns).serialize_private()
        self.assertEqual(ns2, ns)
        ns = n.serialize_public()
-        self.assertEqual(ns, "xpub6ASuArnXKPbfEwhqN6e3mwBcDTgzisQN1wXN9BJcM47sSikHjJf3UFHKkNAWbWMiGj7Wf5uMash7SyYq527Hqck2AxYysAA7xmALppuCkwQ")
+        self.assertEqual(ns, 'xpub6ASuArnXKPbfEwhqN6e3mwBcDTgzisQN1wXN9BJcM47sSikHjJf3UFHKkNAWbWMiGj7Wf5uMash7SyYq527Hqck2AxYysAA7xmALppuCkwQ')
        n2 = bip32.deserialize(ns)
        self.assertEqual(n2.private_key(), bytes(32))
        ns2 = n2.serialize_public()
@ -86,15 +86,15 @@ class TestCryptoBip32(unittest.TestCase):
        # [Chain m/0'/1/2']
        n.derive(0x80000000 | 2)
        self.assertEqual(n.fingerprint(), 0xbef5a2f9)
-        self.assertEqual(n.chain_code(), unhexlify("04466b9cc8e161e966409ca52986c584f07e9dc81f735db683c3ff6ec7b1503f"))
-        self.assertEqual(n.private_key(), unhexlify("cbce0d719ecf7431d88e6a89fa1483e02e35092af60c042b1df2ff59fa424dca"))
-        self.assertEqual(n.public_key(), unhexlify("0357bfe1e341d01c69fe5654309956cbea516822fba8a601743a012a7896ee8dc2"))
+        self.assertEqual(n.chain_code(), unhexlify('04466b9cc8e161e966409ca52986c584f07e9dc81f735db683c3ff6ec7b1503f'))
+        self.assertEqual(n.private_key(), unhexlify('cbce0d719ecf7431d88e6a89fa1483e02e35092af60c042b1df2ff59fa424dca'))
+        self.assertEqual(n.public_key(), unhexlify('0357bfe1e341d01c69fe5654309956cbea516822fba8a601743a012a7896ee8dc2'))
        ns = n.serialize_private()
-        self.assertEqual(ns, "xprv9z4pot5VBttmtdRTWfWQmoH1taj2axGVzFqSb8C9xaxKymcFzXBDptWmT7FwuEzG3ryjH4ktypQSAewRiNMjANTtpgP4mLTj34bhnZX7UiM")
+        self.assertEqual(ns, 'xprv9z4pot5VBttmtdRTWfWQmoH1taj2axGVzFqSb8C9xaxKymcFzXBDptWmT7FwuEzG3ryjH4ktypQSAewRiNMjANTtpgP4mLTj34bhnZX7UiM')
        ns2 = bip32.deserialize(ns).serialize_private()
        self.assertEqual(ns2, ns)
        ns = n.serialize_public()
-        self.assertEqual(ns, "xpub6D4BDPcP2GT577Vvch3R8wDkScZWzQzMMUm3PWbmWvVJrZwQY4VUNgqFJPMM3No2dFDFGTsxxpG5uJh7n7epu4trkrX7x7DogT5Uv6fcLW5")
+        self.assertEqual(ns, 'xpub6D4BDPcP2GT577Vvch3R8wDkScZWzQzMMUm3PWbmWvVJrZwQY4VUNgqFJPMM3No2dFDFGTsxxpG5uJh7n7epu4trkrX7x7DogT5Uv6fcLW5')
        n2 = bip32.deserialize(ns)
        self.assertEqual(n2.private_key(), bytes(32))
        ns2 = n2.serialize_public()
@ -103,15 +103,15 @@ class TestCryptoBip32(unittest.TestCase):
        # [Chain m/0'/1/2'/2]
        n.derive(2)
        self.assertEqual(n.fingerprint(), 0xee7ab90c)
-        self.assertEqual(n.chain_code(), unhexlify("cfb71883f01676f587d023cc53a35bc7f88f724b1f8c2892ac1275ac822a3edd"))
-        self.assertEqual(n.private_key(), unhexlify("0f479245fb19a38a1954c5c7c0ebab2f9bdfd96a17563ef28a6a4b1a2a764ef4"))
-        self.assertEqual(n.public_key(), unhexlify("02e8445082a72f29b75ca48748a914df60622a609cacfce8ed0e35804560741d29"))
+        self.assertEqual(n.chain_code(), unhexlify('cfb71883f01676f587d023cc53a35bc7f88f724b1f8c2892ac1275ac822a3edd'))
+        self.assertEqual(n.private_key(), unhexlify('0f479245fb19a38a1954c5c7c0ebab2f9bdfd96a17563ef28a6a4b1a2a764ef4'))
+        self.assertEqual(n.public_key(), unhexlify('02e8445082a72f29b75ca48748a914df60622a609cacfce8ed0e35804560741d29'))
        ns = n.serialize_private()
-        self.assertEqual(ns, "xprvA2JDeKCSNNZky6uBCviVfJSKyQ1mDYahRjijr5idH2WwLsEd4Hsb2Tyh8RfQMuPh7f7RtyzTtdrbdqqsunu5Mm3wDvUAKRHSC34sJ7in334")
+        self.assertEqual(ns, 'xprvA2JDeKCSNNZky6uBCviVfJSKyQ1mDYahRjijr5idH2WwLsEd4Hsb2Tyh8RfQMuPh7f7RtyzTtdrbdqqsunu5Mm3wDvUAKRHSC34sJ7in334')
        ns2 = bip32.deserialize(ns).serialize_private()
        self.assertEqual(ns2, ns)
        ns = n.serialize_public()
-        self.assertEqual(ns, "xpub6FHa3pjLCk84BayeJxFW2SP4XRrFd1JYnxeLeU8EqN3vDfZmbqBqaGJAyiLjTAwm6ZLRQUMv1ZACTj37sR62cfN7fe5JnJ7dh8zL4fiyLHV")
+        self.assertEqual(ns, 'xpub6FHa3pjLCk84BayeJxFW2SP4XRrFd1JYnxeLeU8EqN3vDfZmbqBqaGJAyiLjTAwm6ZLRQUMv1ZACTj37sR62cfN7fe5JnJ7dh8zL4fiyLHV')
        n2 = bip32.deserialize(ns)
        self.assertEqual(n2.private_key(), bytes(32))
        ns2 = n2.serialize_public()
@ -120,15 +120,15 @@ class TestCryptoBip32(unittest.TestCase):
        # [Chain m/0'/1/2'/2/1000000000]
        n.derive(1000000000)
        self.assertEqual(n.fingerprint(), 0xd880d7d8)
-        self.assertEqual(n.chain_code(), unhexlify("c783e67b921d2beb8f6b389cc646d7263b4145701dadd2161548a8b078e65e9e"))
-        self.assertEqual(n.private_key(), unhexlify("471b76e389e528d6de6d816857e012c5455051cad6660850e58372a6c3e6e7c8"))
-        self.assertEqual(n.public_key(), unhexlify("022a471424da5e657499d1ff51cb43c47481a03b1e77f951fe64cec9f5a48f7011"))
+        self.assertEqual(n.chain_code(), unhexlify('c783e67b921d2beb8f6b389cc646d7263b4145701dadd2161548a8b078e65e9e'))
+        self.assertEqual(n.private_key(), unhexlify('471b76e389e528d6de6d816857e012c5455051cad6660850e58372a6c3e6e7c8'))
+        self.assertEqual(n.public_key(), unhexlify('022a471424da5e657499d1ff51cb43c47481a03b1e77f951fe64cec9f5a48f7011'))
        ns = n.serialize_private()
-        self.assertEqual(ns, "xprvA41z7zogVVwxVSgdKUHDy1SKmdb533PjDz7J6N6mV6uS3ze1ai8FHa8kmHScGpWmj4WggLyQjgPie1rFSruoUihUZREPSL39UNdE3BBDu76")
+        self.assertEqual(ns, 'xprvA41z7zogVVwxVSgdKUHDy1SKmdb533PjDz7J6N6mV6uS3ze1ai8FHa8kmHScGpWmj4WggLyQjgPie1rFSruoUihUZREPSL39UNdE3BBDu76')
        ns2 = bip32.deserialize(ns).serialize_private()
        self.assertEqual(ns2, ns)
        ns = n.serialize_public()
-        self.assertEqual(ns, "xpub6H1LXWLaKsWFhvm6RVpEL9P4KfRZSW7abD2ttkWP3SSQvnyA8FSVqNTEcYFgJS2UaFcxupHiYkro49S8yGasTvXEYBVPamhGW6cFJodrTHy")
+        self.assertEqual(ns, 'xpub6H1LXWLaKsWFhvm6RVpEL9P4KfRZSW7abD2ttkWP3SSQvnyA8FSVqNTEcYFgJS2UaFcxupHiYkro49S8yGasTvXEYBVPamhGW6cFJodrTHy')
        n2 = bip32.deserialize(ns)
        self.assertEqual(n2.private_key(), bytes(32))
        ns2 = n2.serialize_public()
--- a/tests/test_trezor.crypto.der.py
+++ b/tests/test_trezor.crypto.der.py
@ -4,49 +4,50 @@ from trezor.crypto import der

 class TestCryptoDer(unittest.TestCase):

-    vectors_sig = [
-        ("9a0b7be0d4ed3146ee262b42202841834698bb3ee39c24e7437df208b8b70771",
-        "2b79ab1e7736219387dffe8d615bbdba87e11477104b867ef47afed1a5ede781",
-        "30450221009a0b7be0d4ed3146ee262b42202841834698bb3ee39c24e7437df208b8b7077102202b79ab1e7736219387dffe8d615bbdba87e11477104b867ef47afed1a5ede781"),
+    vectors_seq = [
+        (('9a0b7be0d4ed3146ee262b42202841834698bb3ee39c24e7437df208b8b70771',
+          '2b79ab1e7736219387dffe8d615bbdba87e11477104b867ef47afed1a5ede781'),
+          '30450221009a0b7be0d4ed3146ee262b42202841834698bb3ee39c24e7437df208b8b7077102202b79ab1e7736219387dffe8d615bbdba87e11477104b867ef47afed1a5ede781'),

-        ("6666666666666666666666666666666666666666666666666666666666666666",
-        "7777777777777777777777777777777777777777777777777777777777777777",
-        "30440220666666666666666666666666666666666666666666666666666666666666666602207777777777777777777777777777777777777777777777777777777777777777"),
+        (('6666666666666666666666666666666666666666666666666666666666666666',
+          '7777777777777777777777777777777777777777777777777777777777777777'),
+         '30440220666666666666666666666666666666666666666666666666666666666666666602207777777777777777777777777777777777777777777777777777777777777777'),

-        ("6666666666666666666666666666666666666666666666666666666666666666",
-        "eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee",
-        "304502206666666666666666666666666666666666666666666666666666666666666666022100eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee"),
+        (('6666666666666666666666666666666666666666666666666666666666666666',
+          'eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee'),
+         '304502206666666666666666666666666666666666666666666666666666666666666666022100eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee'),

-        ("eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee",
-        "7777777777777777777777777777777777777777777777777777777777777777",
-        "3045022100eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee02207777777777777777777777777777777777777777777777777777777777777777"),
+        (('eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee',
+          '7777777777777777777777777777777777777777777777777777777777777777'),
+         '3045022100eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee02207777777777777777777777777777777777777777777777777777777777777777'),

-        ("eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee",
-        "ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff",
-        "3046022100eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee022100ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff"),
+        (('eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee',
+          'ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff'),
+         '3046022100eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee022100ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff'),

-        ("0000000000000000000000000000000000000000000000000000000000000066",
-        "0000000000000000000000000000000000000000000000000000000000000077",
-        "3006020166020177"),
+        (('0000000000000000000000000000000000000000000000000000000000000066',
+          '0000000000000000000000000000000000000000000000000000000000000077'),
+          '3006020166020177'),

-        ("0000000000000000000000000000000000000000000000000000000000000066",
-        "00000000000000000000000000000000000000000000000000000000000000ee",
-        "3007020166020200ee"),
+        (('0000000000000000000000000000000000000000000000000000000000000066',
+          '00000000000000000000000000000000000000000000000000000000000000ee'),
+          '3007020166020200ee'),

-        ("00000000000000000000000000000000000000000000000000000000000000ee",
-        "0000000000000000000000000000000000000000000000000000000000000077",
-        "3007020200ee020177"),
+        (('00000000000000000000000000000000000000000000000000000000000000ee',
+          '0000000000000000000000000000000000000000000000000000000000000077'),
+          '3007020200ee020177'),

-        ("00000000000000000000000000000000000000000000000000000000000000ee",
-        "00000000000000000000000000000000000000000000000000000000000000ff",
-        "3008020200ee020200ff"),
+        (('00000000000000000000000000000000000000000000000000000000000000ee',
+          '00000000000000000000000000000000000000000000000000000000000000ff'),
+          '3008020200ee020200ff'),
    ]

-    def test_encode_sig_der(self):
+    def test_der_encode_seq(self):

-        for r, s, d in self.vectors_sig:
-            r, s, d = unhexlify(r), unhexlify(s), unhexlify(d)
-            d2 = der.convert_seq((r,s))
+        for s, d in self.vectors_seq:
+            s = (unhexlify(i) for i in s)
+            d = unhexlify(d)
+            d2 = der.encode_seq(s)
            self.assertEqual(d, d2)

 if __name__ == '__main__':