mirror of
https://github.com/trezor/trezor-firmware.git
synced 2024-11-12 18:49:07 +00:00
seed: add support for key namespaces
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parent
5bc47fc567
commit
9ecd123bd5
@ -6,36 +6,39 @@ from apps.common.request_passphrase import protect_by_passphrase
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class Keychain:
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def __init__(self, root: bip32.HDNode):
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def __init__(self, path: list, root: bip32.HDNode):
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self.path = path
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self.root = root
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def derive(self, path: list) -> bip32.HDNode:
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self.validate_path(path)
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def derive(self, node_path: list) -> bip32.HDNode:
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# check we are in the cardano namespace
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prefix = node_path[: len(self.path)]
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suffix = node_path[len(self.path) :]
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if prefix != self.path:
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raise wire.DataError("Forbidden key path")
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# derive child node from the root
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node = self.root.clone()
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for i in path:
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for i in suffix:
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node.derive_cardano(i)
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return node
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def validate_path(self, path: list) -> None:
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if len(path) < 2 or len(path) > 5:
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raise wire.ProcessError("Derivation path must be composed from 2-5 indices")
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if path[0] != HARDENED | 44 or path[1] != HARDENED | 1815:
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raise wire.ProcessError("This is not cardano derivation path")
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async def get_keychain(ctx: wire.Context) -> Keychain:
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if not storage.is_initialized():
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# device does not have any seed
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raise wire.ProcessError("Device is not initialized")
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# acquire passphrase
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# derive the root node from mnemonic and passphrase
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passphrase = cache.get_passphrase()
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if passphrase is None:
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passphrase = await protect_by_passphrase(ctx)
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cache.set_passphrase(passphrase)
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# compute the seed from mnemonic and passphrase
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root = bip32.from_mnemonic_cardano(storage.get_mnemonic(), passphrase)
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keychain = Keychain(root)
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path = [HARDENED | 44, HARDENED | 1815]
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# derive the namespaced root node
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for i in path:
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root.derive_cardano(i)
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keychain = Keychain(path, root)
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return keychain
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@ -4,45 +4,78 @@ from trezor.crypto import bip32, bip39
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from apps.common import cache, storage
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from apps.common.request_passphrase import protect_by_passphrase
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_DEFAULT_CURVE = "secp256k1"
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allow = list
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class Keychain:
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def __init__(self, seed: bytes):
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self.seed = seed
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"""
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Keychain provides an API for deriving HD keys from previously allowed
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key-spaces.
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"""
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def derive(self, path: list, curve_name: str = _DEFAULT_CURVE) -> bip32.HDNode:
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node = bip32.from_seed(self.seed, curve_name)
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node.derive_path(path)
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def __init__(self, paths: list, roots: list):
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self.paths = paths
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self.roots = roots
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def derive(self, node_path: list, curve_name: str = "secp256k1") -> bip32.HDNode:
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# find the root node
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root_index = 0
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for curve, *path in self.paths:
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prefix = node_path[: len(path)]
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suffix = node_path[len(path) :]
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if curve == curve_name and path == prefix:
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break
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root_index += 1
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else:
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raise wire.DataError("Forbidden key path")
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# derive child node from the root
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node = self.roots[root_index].clone()
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node.derive_path(suffix)
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return node
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async def get_keychain(ctx: wire.Context) -> Keychain:
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async def get_keychain(ctx: wire.Context, paths: list = None) -> Keychain:
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if not storage.is_initialized():
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# device does not have any seed
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raise wire.ProcessError("Device is not initialized")
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seed = cache.get_seed()
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if seed is None:
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# acquire passphrase
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# derive seed from mnemonic and passphrase
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passphrase = cache.get_passphrase()
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if passphrase is None:
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passphrase = await protect_by_passphrase(ctx)
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cache.set_passphrase(passphrase)
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# compute the seed from mnemonic and passphrase
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seed = bip39.seed(storage.get_mnemonic(), passphrase)
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cache.set_seed(seed)
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keychain = Keychain(seed)
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if paths is None:
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# allow the whole keyspace by default
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paths = [
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["curve25519"],
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["ed25519"],
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["ed25519-keccak"],
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["nist256p1"],
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["secp256k1"],
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["secp256k1-decred"],
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["secp256k1-groestl"],
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["secp256k1-smart"],
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]
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# derive namespaced root nodes
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roots = []
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for curve, *path in paths:
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node = bip32.from_seed(seed, curve)
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node.derive_path(path)
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roots.append(node)
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keychain = Keychain(paths, roots)
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return keychain
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def derive_node_without_passphrase(
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path: list, curve_name: str = _DEFAULT_CURVE
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path: list, curve_name: str = "secp256k1"
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) -> bip32.HDNode:
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if not storage.is_initialized():
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# device does not have any seed
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raise Exception("Device is not initialized")
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seed = bip39.seed(storage.get_mnemonic(), "")
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node = bip32.from_seed(seed, curve_name)
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@ -8,6 +8,7 @@ from apps.cardano.address import (
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validate_full_path,
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derive_address_and_node
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)
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from apps.cardano.seed import Keychain
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from trezor.crypto import bip32
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@ -16,6 +17,9 @@ class TestCardanoAddress(unittest.TestCase):
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mnemonic = "all all all all all all all all all all all all"
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passphrase = ""
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node = bip32.from_mnemonic_cardano(mnemonic, passphrase)
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node.derive_cardano(0x80000000 | 44)
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node.derive_cardano(0x80000000 | 1815)
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keychain = Keychain([0x80000000 | 44, 0x80000000 | 1815], node)
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addresses = [
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"Ae2tdPwUPEZ98eHFwxSsPBDz73amioKpr58Vw85mP1tMkzq8siaftiejJ3j",
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@ -25,7 +29,7 @@ class TestCardanoAddress(unittest.TestCase):
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for i, expected in enumerate(addresses):
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# 44'/1815'/0'/0/i'
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address, _ = derive_address_and_node(node, [0x80000000 | 44, 0x80000000 | 1815, 0x80000000, 0, 0x80000000 + i])
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address, _ = derive_address_and_node(keychain, [0x80000000 | 44, 0x80000000 | 1815, 0x80000000, 0, 0x80000000 + i])
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self.assertEqual(expected, address)
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nodes = [
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@ -50,7 +54,7 @@ class TestCardanoAddress(unittest.TestCase):
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]
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for i, (priv, ext, pub, chain) in enumerate(nodes):
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_, n = derive_address_and_node(node, [0x80000000 | 44, 0x80000000 | 1815, 0x80000000, 0, 0x80000000 + i])
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_, n = derive_address_and_node(keychain, [0x80000000 | 44, 0x80000000 | 1815, 0x80000000, 0, 0x80000000 + i])
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self.assertEqual(hexlify(n.private_key()), priv)
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self.assertEqual(hexlify(n.private_key_ext()), ext)
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self.assertEqual(hexlify(seed.remove_ed25519_prefix(n.public_key())), pub)
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@ -60,6 +64,9 @@ class TestCardanoAddress(unittest.TestCase):
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mnemonic = "all all all all all all all all all all all all"
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passphrase = ""
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node = bip32.from_mnemonic_cardano(mnemonic, passphrase)
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node.derive_cardano(0x80000000 | 44)
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node.derive_cardano(0x80000000 | 1815)
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keychain = Keychain([0x80000000 | 44, 0x80000000 | 1815], node)
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addresses = [
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"Ae2tdPwUPEZ5YUb8sM3eS8JqKgrRLzhiu71crfuH2MFtqaYr5ACNRdsswsZ",
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@ -69,7 +76,7 @@ class TestCardanoAddress(unittest.TestCase):
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for i, expected in enumerate(addresses):
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# 44'/1815'/0'/0/i
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address, _ = derive_address_and_node(node, [0x80000000 | 44, 0x80000000 | 1815, 0x80000000, 0, i])
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address, _ = derive_address_and_node(keychain, [0x80000000 | 44, 0x80000000 | 1815, 0x80000000, 0, i])
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self.assertEqual(address, expected)
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nodes = [
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@ -94,7 +101,7 @@ class TestCardanoAddress(unittest.TestCase):
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]
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for i, (priv, ext, pub, chain) in enumerate(nodes):
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_, n = derive_address_and_node(node, [0x80000000 | 44, 0x80000000 | 1815, 0x80000000, 0, i])
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_, n = derive_address_and_node(keychain, [0x80000000 | 44, 0x80000000 | 1815, 0x80000000, 0, i])
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self.assertEqual(hexlify(n.private_key()), priv)
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self.assertEqual(hexlify(n.private_key_ext()), ext)
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self.assertEqual(hexlify(seed.remove_ed25519_prefix(n.public_key())), pub)
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@ -105,9 +112,12 @@ class TestCardanoAddress(unittest.TestCase):
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mnemonic = "all all all all all all all all all all all all"
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passphrase = ""
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node = bip32.from_mnemonic_cardano(mnemonic, passphrase)
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node.derive_cardano(0x80000000 | 44)
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node.derive_cardano(0x80000000 | 1815)
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keychain = Keychain([0x80000000 | 44, 0x80000000 | 1815], node)
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# 44'/1815'
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address, _ = derive_address_and_node(node, [0x80000000 | 44, 0x80000000 | 1815])
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address, _ = derive_address_and_node(keychain, [0x80000000 | 44, 0x80000000 | 1815])
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self.assertEqual(address, "Ae2tdPwUPEZ2FGHX3yCKPSbSgyuuTYgMxNq652zKopxT4TuWvEd8Utd92w3")
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priv, ext, pub, chain = (
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@ -117,7 +127,7 @@ class TestCardanoAddress(unittest.TestCase):
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b"02ac67c59a8b0264724a635774ca2c242afa10d7ab70e2bf0a8f7d4bb10f1f7a"
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)
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_, n = derive_address_and_node(node, [0x80000000 | 44, 0x80000000 | 1815])
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_, n = derive_address_and_node(keychain, [0x80000000 | 44, 0x80000000 | 1815])
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self.assertEqual(hexlify(n.private_key()), priv)
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self.assertEqual(hexlify(n.private_key_ext()), ext)
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self.assertEqual(hexlify(seed.remove_ed25519_prefix(n.public_key())), pub)
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@ -1,5 +1,6 @@
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from common import *
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from apps.cardano.seed import Keychain
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from apps.cardano.get_public_key import _get_public_key
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from trezor.crypto import bip32
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from ubinascii import hexlify
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@ -10,6 +11,9 @@ class TestCardanoGetPublicKey(unittest.TestCase):
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mnemonic = "all all all all all all all all all all all all"
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passphrase = ""
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node = bip32.from_mnemonic_cardano(mnemonic, passphrase)
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node.derive_cardano(0x80000000 | 44)
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node.derive_cardano(0x80000000 | 1815)
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keychain = Keychain([0x80000000 | 44, 0x80000000 | 1815], node)
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derivation_paths = [
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[0x80000000 | 44, 0x80000000 | 1815, 0x80000000, 0, 0x80000000],
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@ -40,7 +44,7 @@ class TestCardanoGetPublicKey(unittest.TestCase):
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]
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for index, derivation_path in enumerate(derivation_paths):
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key = _get_public_key(node, derivation_path)
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key = _get_public_key(keychain, derivation_path)
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self.assertEqual(hexlify(key.node.public_key), public_keys[index])
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self.assertEqual(hexlify(key.node.chain_code), chain_codes[index])
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