mirror of
https://github.com/trezor/trezor-firmware.git
synced 2025-07-09 16:18:10 +00:00
e1615e60ec
Update protobuf - Previous transactions don't need to be sent anymore, because fee is included in the transaction now. Thus transactions_count can be removed from CardanoSignTx message and the CardanoTxAck and CardanoTxRequest messages can be removed altogether. - CardanoTxInputType.type is unused so remove it Add NULL (None type) serialisation to CBOR - Transaction metada must either have a valid structure or CBOR NULL must be used (if metadata is empty) - it can't be simply left out. Add protocol_magics file - Just to have a nicer way of representing protocol magics Update transaction signing - Previous transactions no longer need to be requested - Output building is simplified, since fee doesn't need to be calculated - Remove transaction class since it is no longer needed (only functions remained) - Reorder functions so it reads top to bottom Add protocol magic to byron address on testnet - This has always been a part of the spec, but it hasn't been implemented before, because it wasn't really needed. Update trezorlib Update tests - Transaction messages are no longer required - Expected values are different since tx format changed - Common values in test cases have been extracted Remove unused file - Progress was used when receiving previous transactions Add CRC check to output address validation
66 lines
2.0 KiB
Python
66 lines
2.0 KiB
Python
from storage import cache, device
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from trezor import wire
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from trezor.crypto import bip32
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from apps.common import mnemonic
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from apps.common.passphrase import get as get_passphrase
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from . import SEED_NAMESPACE
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if False:
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from apps.common.paths import Bip32Path
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from apps.common.keychain import MsgIn, MsgOut, Handler, HandlerWithKeychain
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class Keychain:
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"""Cardano keychain hard-coded to SEED_NAMESPACE."""
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def __init__(self, root: bip32.HDNode) -> None:
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self.root = root
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def verify_path(self, path: Bip32Path) -> None:
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if path[: len(SEED_NAMESPACE)] != SEED_NAMESPACE:
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raise wire.DataError("Forbidden key path")
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def derive(self, node_path: Bip32Path) -> bip32.HDNode:
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# derive child node from the root
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node = self.root.clone()
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suffix = node_path[len(SEED_NAMESPACE) :]
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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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# XXX the root node remains in session cache so we should not delete it
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# def __del__(self) -> None:
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# self.root.__del__()
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@cache.stored_async(cache.APP_CARDANO_ROOT)
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async def get_keychain(ctx: wire.Context) -> Keychain:
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if not device.is_initialized():
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raise wire.NotInitialized("Device is not initialized")
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passphrase = await get_passphrase(ctx)
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if mnemonic.is_bip39():
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# derive the root node from mnemonic and passphrase via Cardano Icarus algorithm
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root = bip32.from_mnemonic_cardano(mnemonic.get_secret().decode(), passphrase)
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else:
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# derive the root node via SLIP-0023
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seed = mnemonic.get_seed(passphrase)
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root = bip32.from_seed(seed, "ed25519 cardano seed")
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# derive the namespaced root node
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for i in SEED_NAMESPACE:
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root.derive_cardano(i)
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keychain = Keychain(root)
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return keychain
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def with_keychain(func: HandlerWithKeychain[MsgIn, MsgOut]) -> Handler[MsgIn, MsgOut]:
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async def wrapper(ctx: wire.Context, msg: MsgIn) -> MsgOut:
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keychain = await get_keychain(ctx)
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return await func(ctx, msg, keychain)
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return wrapper
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