import typing from cryptography import x509 from cryptography.hazmat.primitives import serialization from cryptography.hazmat.primitives.serialization import pkcs7 def serialize_certificates( certs: typing.List[x509.Certificate], encoding: serialization.Encoding, ) -> bytes: ... def sign_and_serialize( builder: pkcs7.PKCS7SignatureBuilder, encoding: serialization.Encoding, options: typing.Iterable[pkcs7.PKCS7Options], ) -> bytes: ...