mirror of
https://github.com/trezor/trezor-firmware.git
synced 2024-12-16 19:38:09 +00:00
64 lines
1.8 KiB
Python
64 lines
1.8 KiB
Python
from trezor.crypto import base58
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from trezor.messages import EosAsset
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from apps.common import HARDENED
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def base58_encode(prefix: str, sig_prefix: str, data: bytes) -> str:
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b58 = base58.encode(data + base58.ripemd160_32(data + sig_prefix.encode()))
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if sig_prefix:
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return prefix + sig_prefix + "_" + b58
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else:
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return prefix + b58
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def eos_name_to_string(value) -> str:
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charmap = ".12345abcdefghijklmnopqrstuvwxyz"
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tmp = value
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string = ""
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for i in range(0, 13):
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c = charmap[tmp & (0x0F if i == 0 else 0x1F)]
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string = c + string
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tmp >>= 4 if i == 0 else 5
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return string.rstrip(".")
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def eos_asset_to_string(asset: EosAsset) -> str:
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symbol_bytes = int.to_bytes(asset.symbol, 8, "big")
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precision = symbol_bytes[7]
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symbol = bytes(reversed(symbol_bytes[:7])).rstrip(b"\x00").decode("ascii")
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amount_digits = "{:0{precision}d}".format(asset.amount, precision=precision)
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if precision > 0:
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integer = amount_digits[:-precision]
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if integer == "":
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integer = "0"
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fraction = amount_digits[-precision:]
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return "{}.{} {}".format(integer, fraction, symbol)
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else:
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return "{} {}".format(amount_digits, symbol)
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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'/194'/a'/0/0,
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where `a` is an account index from 0 to 1 000 000.
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Similar to Ethereum this should be 44'/194'/a', but for
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compatibility with other HW vendors we use 44'/194'/a'/0/0.
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"""
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if len(path) != 5:
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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] != 194 | 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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if path[3] != 0:
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return False
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if path[4] != 0:
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return False
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return True
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