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https://github.com/trezor/trezor-firmware.git
synced 2024-12-04 05:28:17 +00:00
68 lines
1.8 KiB
Python
68 lines
1.8 KiB
Python
from apps.common import HARDENED
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if False:
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from apps.monero.xmr.types import *
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def get_creds(keychain, address_n=None, network_type=None):
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from apps.monero.xmr import crypto, monero
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from apps.monero.xmr.credentials import AccountCreds
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use_slip0010 = 0 not in address_n # If path contains 0 it is not SLIP-0010
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if use_slip0010:
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curve = "ed25519"
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else:
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curve = "secp256k1"
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node = keychain.derive(address_n, curve)
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if use_slip0010:
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key_seed = node.private_key()
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else:
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key_seed = crypto.cn_fast_hash(node.private_key())
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spend_sec, _, view_sec, _ = monero.generate_monero_keys(key_seed)
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creds = AccountCreds.new_wallet(view_sec, spend_sec, network_type)
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return creds
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def validate_full_path(path: list) -> bool:
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"""
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Validates derivation path to equal 44'/128'/a',
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where `a` is an account index from 0 to 1 000 000.
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"""
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if len(path) != 3:
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return False
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if path[0] != 44 | HARDENED:
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return False
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if path[1] != 128 | HARDENED:
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return False
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if path[2] < HARDENED or path[2] > 1000000 | HARDENED:
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return False
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return True
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def compute_tx_key(
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spend_key_private: Sc25519,
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tx_prefix_hash: bytes,
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salt: bytes,
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rand_mult_num: Sc25519,
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) -> bytes:
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from apps.monero.xmr import crypto
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rand_inp = crypto.sc_add(spend_key_private, rand_mult_num)
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passwd = crypto.keccak_2hash(crypto.encodeint(rand_inp) + tx_prefix_hash)
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tx_key = crypto.compute_hmac(salt, passwd)
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return tx_key
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def compute_enc_key_host(
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view_key_private: Sc25519, tx_prefix_hash: bytes
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) -> Tuple[bytes, bytes]:
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from apps.monero.xmr import crypto
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salt = crypto.random_bytes(32)
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passwd = crypto.keccak_2hash(crypto.encodeint(view_key_private) + tx_prefix_hash)
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tx_key = crypto.compute_hmac(salt, passwd)
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return tx_key, salt
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