def get_siphash_keys(self):
    header_nonce = self.header.serialize()
    header_nonce += struct.pack('<Q', self.nonce)
    hash_header_nonce_as_str = sha256(header_nonce)
    key0 = struct.unpack('<Q', hash_header_nonce_as_str[0:8])[0]
    key1 = struct.unpack('<Q', hash_header_nonce_as_str[8:16])[0]
    return [key0, key1]
def get_siphash_keys(self):
    header_nonce = self.header.serialize()
    header_nonce += struct.pack('<Q', self.nonce)
    hash_header_nonce_as_str = sha256(header_nonce)
    key0 = struct.unpack('<Q', hash_header_nonce_as_str[0:8])[0]
    key1 = struct.unpack('<Q', hash_header_nonce_as_str[8:16])[0]
    return [key0, key1]