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trezor-firmware
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seed: use lazy seed derivation, wipe after the workflow ends

Browse Source
pull/25/head
Jan Pochyla 6 years ago
parent a0df8c74d5
commit 7730533dde
8 changed files with 44 additions and 54 deletions
Show Stats Download Patch File Download Diff File

39
src/apps/common/seed.py
Unescape View File

@ -13,14 +13,22 @@ class Keychain:
key-spaces.
"""
def __init__(self, paths: list, roots: list):
self.paths = paths
self.roots = roots
def __init__(self, seed: bytes, namespaces: list):
self.seed = seed
self.namespaces = namespaces
self.roots = [None] * len(namespaces)
def __del__(self):
for root in self.roots:
if root is not None:
root.__del__()
del self.roots
del self.seed
def derive(self, node_path: list, curve_name: str = "secp256k1") -> bip32.HDNode:
# find the root node
# find the root node index
root_index = 0
for curve, *path in self.paths:
for curve, *path in self.namespaces:
prefix = node_path[: len(path)]
suffix = node_path[len(path) :]
if curve == curve_name and path == prefix:
@ -28,13 +36,21 @@ class Keychain:
root_index += 1
else:
raise wire.DataError("Forbidden key path")
# create the root node if not cached
root = self.roots[root_index]
if root is None:
root = bip32.from_seed(self.seed, curve_name)
root.derive_path(path)
self.roots[root_index] = root
# derive child node from the root
node = self.roots[root_index].clone()
node = root.clone()
node.derive_path(suffix)
return node
async def get_keychain(ctx: wire.Context, paths: list) -> Keychain:
async def get_keychain(ctx: wire.Context, namespaces: list) -> Keychain:
if not storage.is_initialized():
raise wire.ProcessError("Device is not initialized")
@ -48,14 +64,7 @@ async def get_keychain(ctx: wire.Context, paths: list) -> Keychain:
seed = bip39.seed(storage.get_mnemonic(), passphrase)
cache.set_seed(seed)
# derive namespaced root nodes
roots = []
for curve, *path in paths:
node = bip32.from_seed(seed, curve)
node.derive_path(path)
roots.append(node)
keychain = Keychain(paths, roots)
keychain = Keychain(seed, namespaces)
return keychain

5
src/trezor/wire/__init__.py
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@ -184,7 +184,10 @@ async def protobuf_workflow(ctx, reader, handler, *args):
async def keychain_workflow(ctx, req, namespace, handler, *args):
keychain = await seed.get_keychain(ctx, namespace)
args += (keychain,)
return await handler(ctx, req, *args)
try:
return await handler(ctx, req, *args)
finally:
keychain.__del__()
def import_workflow(ctx, req, pkgname, modname, *args):

10
tests/test_apps.wallet.segwit.signtx.native_p2wpkh.py
Unescape View File

@ -1,7 +1,7 @@
from common import *
from trezor.utils import chunks
from trezor.crypto import bip32, bip39
from trezor.crypto import bip39
from trezor.messages.SignTx import SignTx
from trezor.messages.TxInputType import TxInputType
from trezor.messages.TxOutputType import TxOutputType
@ -25,9 +25,7 @@ class TestSignSegwitTxNativeP2WPKH(unittest.TestCase):
def test_send_native_p2wpkh(self):
coin = coins.by_name('Testnet')
seed = bip39.seed(' '.join(['all'] * 12), '')
root = bip32.from_seed(seed, 'secp256k1')
inp1 = TxInputType(
# 49'/1'/0'/0/0" - tb1qqzv60m9ajw8drqulta4ld4gfx0rdh82un5s65s
@ -114,7 +112,7 @@ class TestSignSegwitTxNativeP2WPKH(unittest.TestCase):
)),
]
keychain = Keychain([[coin.curve_name]], [root])
keychain = Keychain(seed, [[coin.curve_name]])
signer = signing.sign_tx(tx, keychain)
for request, response in chunks(messages, 2):
self.assertEqual(signer.send(request), response)
@ -124,9 +122,7 @@ class TestSignSegwitTxNativeP2WPKH(unittest.TestCase):
def test_send_native_p2wpkh_change(self):
coin = coins.by_name('Testnet')
seed = bip39.seed(' '.join(['all'] * 12), '')
root = bip32.from_seed(seed, 'secp256k1')
inp1 = TxInputType(
# 49'/1'/0'/0/0" - tb1qqzv60m9ajw8drqulta4ld4gfx0rdh82un5s65s
@ -211,7 +207,7 @@ class TestSignSegwitTxNativeP2WPKH(unittest.TestCase):
)),
]
keychain = Keychain([[coin.curve_name]], [root])
keychain = Keychain(seed, [[coin.curve_name]])
signer = signing.sign_tx(tx, keychain)
for request, response in chunks(messages, 2):
self.assertEqual(signer.send(request), response)

10
tests/test_apps.wallet.segwit.signtx.native_p2wpkh_grs.py
Unescape View File

@ -1,7 +1,7 @@
from common import *
from trezor.utils import chunks
from trezor.crypto import bip32, bip39
from trezor.crypto import bip39
from trezor.messages.SignTx import SignTx
from trezor.messages.TxInputType import TxInputType
from trezor.messages.TxOutputType import TxOutputType
@ -25,9 +25,7 @@ class TestSignSegwitTxNativeP2WPKH_GRS(unittest.TestCase):
def test_send_native_p2wpkh(self):
coin = coins.by_name('Groestlcoin Testnet')
seed = bip39.seed(' '.join(['all'] * 12), '')
root = bip32.from_seed(seed, coin.curve_name)
inp1 = TxInputType(
# 84'/1'/0'/0/0" - tgrs1qkvwu9g3k2pdxewfqr7syz89r3gj557l3ued7ja
@ -111,7 +109,7 @@ class TestSignSegwitTxNativeP2WPKH_GRS(unittest.TestCase):
)),
]
keychain = Keychain([[coin.curve_name]], [root])
keychain = Keychain(seed, [[coin.curve_name]])
signer = signing.sign_tx(tx, keychain)
for request, response in chunks(messages, 2):
self.assertEqual(signer.send(request), response)
@ -121,9 +119,7 @@ class TestSignSegwitTxNativeP2WPKH_GRS(unittest.TestCase):
def test_send_native_p2wpkh_change(self):
coin = coins.by_name('Groestlcoin Testnet')
seed = bip39.seed(' '.join(['all'] * 12), '')
root = bip32.from_seed(seed, coin.curve_name)
inp1 = TxInputType(
# 84'/1'/0'/0/0" - tgrs1qkvwu9g3k2pdxewfqr7syz89r3gj557l3ued7ja
@ -205,7 +201,7 @@ class TestSignSegwitTxNativeP2WPKH_GRS(unittest.TestCase):
)),
]
keychain = Keychain([[coin.curve_name]], [root])
keychain = Keychain(seed, [[coin.curve_name]])
signer = signing.sign_tx(tx, keychain)
for request, response in chunks(messages, 2):
self.assertEqual(signer.send(request), response)

14
tests/test_apps.wallet.segwit.signtx.p2wpkh_in_p2sh.py
Unescape View File

@ -1,7 +1,7 @@
from common import *
from trezor.utils import chunks
from trezor.crypto import bip32, bip39
from trezor.crypto import bip39
from trezor.messages.SignTx import SignTx
from trezor.messages.TxInputType import TxInputType
from trezor.messages.TxOutputType import TxOutputType
@ -25,9 +25,7 @@ class TestSignSegwitTxP2WPKHInP2SH(unittest.TestCase):
def test_send_p2wpkh_in_p2sh(self):
coin = coins.by_name('Testnet')
seed = bip39.seed(' '.join(['all'] * 12), '')
root = bip32.from_seed(seed, 'secp256k1')
inp1 = TxInputType(
# 49'/1'/0'/1/0" - 2N1LGaGg836mqSQqiuUBLfcyGBhyZbremDX
@ -111,7 +109,7 @@ class TestSignSegwitTxP2WPKHInP2SH(unittest.TestCase):
)),
]
keychain = Keychain([[coin.curve_name]], [root])
keychain = Keychain(seed, [[coin.curve_name]])
signer = signing.sign_tx(tx, keychain)
for request, response in chunks(messages, 2):
self.assertEqual(signer.send(request), response)
@ -121,9 +119,7 @@ class TestSignSegwitTxP2WPKHInP2SH(unittest.TestCase):
def test_send_p2wpkh_in_p2sh_change(self):
coin = coins.by_name('Testnet')
seed = bip39.seed(' '.join(['all'] * 12), '')
root = bip32.from_seed(seed, 'secp256k1')
inp1 = TxInputType(
# 49'/1'/0'/1/0" - 2N1LGaGg836mqSQqiuUBLfcyGBhyZbremDX
@ -215,7 +211,7 @@ class TestSignSegwitTxP2WPKHInP2SH(unittest.TestCase):
)),
]
keychain = Keychain([[coin.curve_name]], [root])
keychain = Keychain(seed, [[coin.curve_name]])
signer = signing.sign_tx(tx, keychain)
for request, response in chunks(messages, 2):
self.assertEqual(signer.send(request), response)
@ -227,9 +223,7 @@ class TestSignSegwitTxP2WPKHInP2SH(unittest.TestCase):
def test_send_p2wpkh_in_p2sh_attack_amount(self):
coin = coins.by_name('Testnet')
seed = bip39.seed(' '.join(['all'] * 12), '')
root = bip32.from_seed(seed, 'secp256k1')
inp1 = TxInputType(
# 49'/1'/0'/1/0" - 2N1LGaGg836mqSQqiuUBLfcyGBhyZbremDX
@ -325,7 +319,7 @@ class TestSignSegwitTxP2WPKHInP2SH(unittest.TestCase):
TxRequest(request_type=TXFINISHED, details=None)
]
keychain = Keychain([[coin.curve_name]], [root])
keychain = Keychain(seed, [[coin.curve_name]])
signer = signing.sign_tx(tx, keychain)
i = 0
messages_count = int(len(messages) / 2)

10
tests/test_apps.wallet.segwit.signtx.p2wpkh_in_p2sh_grs.py
Unescape View File

@ -1,7 +1,7 @@
from common import *
from trezor.utils import chunks
from trezor.crypto import bip32, bip39
from trezor.crypto import bip39
from trezor.messages.SignTx import SignTx
from trezor.messages.TxInputType import TxInputType
from trezor.messages.TxOutputType import TxOutputType
@ -25,9 +25,7 @@ class TestSignSegwitTxP2WPKHInP2SH_GRS(unittest.TestCase):
def test_send_p2wpkh_in_p2sh(self):
coin = coins.by_name('Groestlcoin Testnet')
seed = bip39.seed(' '.join(['all'] * 12), '')
root = bip32.from_seed(seed, coin.curve_name)
inp1 = TxInputType(
# 49'/1'/0'/1/0" - 2N1LGaGg836mqSQqiuUBLfcyGBhyZYBtBZ7
@ -111,7 +109,7 @@ class TestSignSegwitTxP2WPKHInP2SH_GRS(unittest.TestCase):
)),
]
keychain = Keychain([[coin.curve_name]], [root])
keychain = Keychain(seed, [[coin.curve_name]])
signer = signing.sign_tx(tx, keychain)
for request, response in chunks(messages, 2):
self.assertEqual(signer.send(request), response)
@ -121,9 +119,7 @@ class TestSignSegwitTxP2WPKHInP2SH_GRS(unittest.TestCase):
def test_send_p2wpkh_in_p2sh_change(self):
coin = coins.by_name('Groestlcoin Testnet')
seed = bip39.seed(' '.join(['all'] * 12), '')
root = bip32.from_seed(seed, coin.curve_name)
inp1 = TxInputType(
# 49'/1'/0'/1/0" - 2N1LGaGg836mqSQqiuUBLfcyGBhyZYBtBZ7
@ -214,7 +210,7 @@ class TestSignSegwitTxP2WPKHInP2SH_GRS(unittest.TestCase):
)),
]
keychain = Keychain([[coin.curve_name]], [root])
keychain = Keychain(seed, [[coin.curve_name]])
signer = signing.sign_tx(tx, keychain)
for request, response in chunks(messages, 2):
self.assertEqual(signer.send(request), response)

4
tests/test_apps.wallet.signtx.py
Unescape View File

@ -97,9 +97,7 @@ class TestSignTx(unittest.TestCase):
]
seed = bip39.seed('alcohol woman abuse must during monitor noble actual mixed trade anger aisle', '')
root = bip32.from_seed(seed, 'secp256k1')
keychain = Keychain([[coin_bitcoin.curve_name]], [root])
keychain = Keychain(seed, [[coin_bitcoin.curve_name]])
signer = signing.sign_tx(tx, keychain)
for request, response in chunks(messages, 2):

6
tests/test_apps.wallet.signtx_grs.py
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@ -1,7 +1,7 @@
from common import *
from trezor.utils import chunks
from trezor.crypto import bip32, bip39
from trezor.crypto import bip39
from trezor.messages.SignTx import SignTx
from trezor.messages.TxInputType import TxInputType
from trezor.messages.TxOutputType import TxOutputType
@ -86,9 +86,7 @@ class TestSignTx_GRS(unittest.TestCase):
]
seed = bip39.seed(' '.join(['all'] * 12), '')
root = bip32.from_seed(seed, coin.curve_name)
keychain = Keychain([[coin.curve_name]], [root])
keychain = Keychain(seed, [[coin.curve_name]])
signer = signing.sign_tx(tx, keychain)
for request, response in chunks(messages, 2):
self.assertEqual(signer.send(request), response)

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