from .. import helpers as utils from ..utils import BinaryReader, BinaryWriter class AuthKey: def __init__(self, data): self.key = data with BinaryReader(utils.sha1(self.key)) as reader: self.aux_hash = reader.read_long(signed=False) reader.read(4) self.key_id = reader.read_long(signed=False) def calc_new_nonce_hash(self, new_nonce, number): """Calculates the new nonce hash based on the current class fields' values""" with BinaryWriter() as writer: writer.write(new_nonce) writer.write_byte(number) writer.write_long(self.aux_hash, signed=False) new_nonce_hash = utils.calc_msg_key(writer.get_bytes()) return new_nonce_hash