Source code for pypergraph.keyring.bip_helpers.bip32_helper

from bip32utils import BIP32Key




class Bip32Helper:


    @staticmethod
    def get_root_key_from_seed(seed_bytes) -> BIP32Key:
        """
        Derive the HD root/master key from a seed entropy in bytes format.

        :param seed_bytes: The seed entropy in bytes format.
        :return: The root/master key.
        """
        return BIP32Key.fromEntropy(seed_bytes)




    def get_hd_root_key_from_seed(self, seed_bytes: bytes, hd_path: str) -> BIP32Key:
        """
        Derive the root key from a seed entropy using derived path. Add index as child key.

        :param seed_bytes: The seed in bytes format.
        :param hd_path: The derivation path.
        :return: HD wallet root key (add index).
        """
        path_parts = [int(part.strip("'")) for part in hd_path.split("/")[1:]]
        purpose = path_parts[0] + 2**31
        coin_type = path_parts[1] + 2**31
        account = path_parts[2] + 2**31
        change = path_parts[3]
        root_key = self.get_root_key_from_seed(seed_bytes=seed_bytes)
        return (
            root_key.ChildKey(purpose)
            .ChildKey(coin_type)
            .ChildKey(account)
            .ChildKey(change)
        )