test_crypto.py 文件源码

def test_key_only(self):
        """
        A `PKCS12` with only a private key can be exported using
        `PKCS12.export` and loaded again using `load_pkcs12`.
        """
        passwd = b"blah"
        p12 = PKCS12()
        pkey = load_privatekey(FILETYPE_PEM, cleartextPrivateKeyPEM)
        p12.set_privatekey(pkey)
        assert None is p12.get_certificate()
        assert pkey == p12.get_privatekey()
        try:
            dumped_p12 = p12.export(passphrase=passwd, iter=2, maciter=3)
        except Error:
            # Some versions of OpenSSL will throw an exception
            # for this nearly useless PKCS12 we tried to generate:
            # [('PKCS12 routines', 'PKCS12_create', 'invalid null argument')]
            return
        p12 = load_pkcs12(dumped_p12, passwd)
        assert None is p12.get_ca_certificates()
        assert None is p12.get_certificate()

        # OpenSSL fails to bring the key back to us.  So sad.  Perhaps in the
        # future this will be improved.
        assert isinstance(p12.get_privatekey(), (PKey, type(None)))