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mirror of https://github.com/trezor/trezor-firmware.git synced 2024-12-12 01:18:14 +00:00
trezor-firmware/core/src/apps/nem/helpers.py
grdddj 9fc5bb546b style(core): full pyright-based type-checking
Changes many fields to required -- as far as we were able to figure out,
signing would fail if these fields aren't provided anyway, so this
should not pose a compatibility problem.

Co-authored-by: matejcik <ja@matejcik.cz>
2022-01-07 21:41:17 +01:00

60 lines
1.7 KiB
Python

from micropython import const
from apps.common import paths
from . import SLIP44_ID
NEM_NETWORK_MAINNET = const(0x68)
NEM_NETWORK_TESTNET = const(0x98)
NEM_NETWORK_MIJIN = const(0x60)
NEM_TRANSACTION_TYPE_TRANSFER = const(0x0101)
NEM_TRANSACTION_TYPE_IMPORTANCE_TRANSFER = const(0x0801)
NEM_TRANSACTION_TYPE_AGGREGATE_MODIFICATION = const(0x1001)
NEM_TRANSACTION_TYPE_MULTISIG_SIGNATURE = const(0x1002)
NEM_TRANSACTION_TYPE_MULTISIG = const(0x1004)
NEM_TRANSACTION_TYPE_PROVISION_NAMESPACE = const(0x2001)
NEM_TRANSACTION_TYPE_MOSAIC_CREATION = const(0x4001)
NEM_TRANSACTION_TYPE_MOSAIC_SUPPLY_CHANGE = const(0x4002)
NEM_MAX_DIVISIBILITY = const(6)
NEM_MAX_SUPPLY = const(9_000_000_000)
NEM_SALT_SIZE = const(32)
AES_BLOCK_SIZE = const(16)
NEM_HASH_ALG = "keccak"
NEM_PUBLIC_KEY_SIZE = const(32) # ed25519 public key
NEM_LEVY_PERCENTILE_DIVISOR_ABSOLUTE = const(10_000)
NEM_MOSAIC_AMOUNT_DIVISOR = const(1_000_000)
NEM_MAX_PLAIN_PAYLOAD_SIZE = const(1024)
NEM_MAX_ENCRYPTED_PAYLOAD_SIZE = const(960)
def get_network_str(network: int) -> str:
if network == NEM_NETWORK_MAINNET:
return "Mainnet"
elif network == NEM_NETWORK_TESTNET:
return "Testnet"
elif network == NEM_NETWORK_MIJIN:
return "Mijin"
raise ValueError # no valid network
def check_path(path: paths.Bip32Path, network: int) -> bool:
"""Validates that the appropriate coin_type is set for the given network."""
if len(path) < 2:
return False
coin_type = path[1] - paths.HARDENED
if network == NEM_NETWORK_TESTNET:
return coin_type == 1
if network in (NEM_NETWORK_MAINNET, NEM_NETWORK_MIJIN):
return coin_type == SLIP44_ID
# unknown network
return False