trezor-firmware/core/src/apps/tezos/get_public_key.py

from typing import TYPE_CHECKING

from trezor.messages import TezosGetPublicKey, TezosPublicKey
from trezor.ui.layouts import show_pubkey

from apps.common import paths, seed
from apps.common.keychain import with_slip44_keychain

from . import CURVE, PATTERNS, SLIP44_ID, helpers

if TYPE_CHECKING:
    from apps.common.keychain import Keychain
    from trezor.wire import Context


@with_slip44_keychain(*PATTERNS, slip44_id=SLIP44_ID, curve=CURVE)
async def get_public_key(
    ctx: Context, msg: TezosGetPublicKey, keychain: Keychain
) -> TezosPublicKey:
    await paths.validate_path(ctx, keychain, msg.address_n)

    node = keychain.derive(msg.address_n)
    pk = seed.remove_ed25519_prefix(node.public_key())
    pk_prefixed = helpers.base58_encode_check(pk, prefix=helpers.TEZOS_PUBLICKEY_PREFIX)

    if msg.show_display:
        await show_pubkey(ctx, pk_prefixed)

    return TezosPublicKey(public_key=pk_prefixed)